feat: migrate unit tests to Jest (#6353)

* config(jest): updated setup * config(jest): update testMatch to include jsx files * config(jest): add transformIgnorePatterns * config(jest): update ignore files that do not work in jest yet * config: add test:unit-jest to test script * fix(jest): lint with eslint-plugin-jest * refactor(jest): move unit test directory * refactor(mocha): restore mocha tests that fail in jest * docs(jest): update helpful scripts with test:unit-jest
2020-09-01 10:41:01 -07:00
parent 0c60696d26
commit 1a27c0a8bd
70 changed files with 2131 additions and 1704 deletions
--- a/test/unit/core/curlify.js
+++ b/test/unit/core/curlify.js
@@ -0,0 +1,354 @@
+import Im from "immutable"
+import curl from "core/curlify"
+import win from "core/window"
+
+describe("curlify", function () {
+
+  it("prints a curl statement with custom content-type", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      body: {
+        id: 0,
+        name: "doggie",
+        status: "available"
+      },
+      headers: {
+        Accept: "application/json",
+        "content-type": "application/json"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"Accept: application/json\" -H  \"content-type: application/json\" -d {\"id\":0,\"name\":\"doggie\",\"status\":\"available\"}")
+  })
+
+  it("does add a empty data param if no request body given", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -d \"\"")
+  })
+
+  it("does not change the case of header in curl", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: {
+        "conTenT Type": "application/Moar"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"conTenT Type: application/Moar\" -d \"\"")
+  })
+
+  it("prints a curl statement with an array of query params", function () {
+    let req = {
+      url: "http://swaggerhub.com/v1/one?name=john|smith",
+      method: "GET"
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X GET \"http://swaggerhub.com/v1/one?name=john|smith\"")
+  })
+
+  it("prints a curl statement with an array of query params and auth", function () {
+    let req = {
+      url: "http://swaggerhub.com/v1/one?name=john|smith",
+      method: "GET",
+      headers: {
+        authorization: "Basic Zm9vOmJhcg=="
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X GET \"http://swaggerhub.com/v1/one?name=john|smith\" -H  \"authorization: Basic Zm9vOmJhcg==\"")
+  })
+
+  it("prints a curl statement with html", function () {
+    let req = {
+      url: "http://swaggerhub.com/v1/one?name=john|smith",
+      method: "GET",
+      headers: {
+        accept: "application/json"
+      },
+      body: {
+        description: "<b>Test</b>"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X GET \"http://swaggerhub.com/v1/one?name=john|smith\" -H  \"accept: application/json\" -d {\"description\":\"<b>Test</b>\"}")
+  })
+
+  it("handles post body with html", function () {
+    let req = {
+      url: "http://swaggerhub.com/v1/one?name=john|smith",
+      method: "POST",
+      headers: {
+        accept: "application/json"
+      },
+      body: {
+        description: "<b>Test</b>"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://swaggerhub.com/v1/one?name=john|smith\" -H  \"accept: application/json\" -d {\"description\":\"<b>Test</b>\"}")
+  })
+
+  it("handles post body with special chars", function () {
+    let req = {
+      url: "http://swaggerhub.com/v1/one?name=john|smith",
+      method: "POST",
+      body: {
+        description: "@prefix nif:<http://persistence.uni-leipzig.org/nlp2rdf/ontologies/nif-core#> .\n" +
+          "@prefix itsrdf: <http://www.w3.org/2005/11/its/rdf#> ."
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://swaggerhub.com/v1/one?name=john|smith\" -d {\"description\":\"@prefix nif:<http://persistence.uni-leipzig.org/nlp2rdf/ontologies/nif-core#> .@prefix itsrdf: <http://www.w3.org/2005/11/its/rdf#> .\"}")
+  })
+
+  it("handles delete form with parameters", function () {
+    let req = {
+      url: "http://example.com",
+      method: "DELETE",
+      headers: {
+        accept: "application/x-www-form-urlencoded"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X DELETE \"http://example.com\" -H  \"accept: application/x-www-form-urlencoded\"")
+  })
+
+  it("should print a curl with formData", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: { "content-type": "multipart/form-data" },
+      body: {
+        id: "123",
+        name: "Sahar"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"content-type: multipart/form-data\" -F \"id=123\" -F \"name=Sahar\"")
+  })
+
+  it("should print a curl with formData that extracts array representation with hashIdx", function () {
+    // Note: hashIdx = `_**[]${counter}`
+    // Usage of hashIdx is an internal SwaggerUI method to convert formData array into something curlify can handle
+    const req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: { "content-type": "multipart/form-data" },
+      body: {
+        id: "123",
+        "fruits[]_**[]1": "apple",
+        "fruits[]_**[]2": "banana",
+        "fruits[]_**[]3": "grape"
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"content-type: multipart/form-data\" -F \"id=123\" -F \"fruits[]=apple\" -F \"fruits[]=banana\" -F \"fruits[]=grape\"")
+  })
+
+  it("should print a curl with formData and file", function () {
+    let file = new win.File([""], "file.txt", { type: "text/plain" })
+    // file.name = "file.txt"
+    // file.type = "text/plain"
+
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: { "content-type": "multipart/form-data" },
+      body: {
+        id: "123",
+        file
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"content-type: multipart/form-data\" -F \"id=123\" -F \"file=@file.txt;type=text/plain\"")
+  })
+
+  it("should print a curl without form data type if type is unknown", function () {
+    let file = new win.File([""], "file.txt", { type: "" })
+    // file.name = "file.txt"
+    // file.type = ""
+
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: { "content-type": "multipart/form-data" },
+      body: {
+        id: "123",
+        file
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"content-type: multipart/form-data\" -F \"id=123\" -F \"file=@file.txt\"")
+  })
+
+  it("prints a curl post statement from an object", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: {
+        accept: "application/json"
+      },
+      body: {
+        id: 10101
+      }
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"accept: application/json\" -d {\"id\":10101}")
+  })
+
+  it("prints a curl post statement from a string containing a single quote", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: {
+        accept: "application/json"
+      },
+      body: "{\"id\":\"foo'bar\"}"
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"accept: application/json\" -d \"{\\\"id\\\":\\\"foo'bar\\\"}\"")
+  })
+
+  describe("given multiple entries with file", function () {
+    describe("and with leading custom header", function () {
+      it("should print a proper curl -F", function () {
+        let file = new win.File([""], "file.txt", { type: "text/plain" })
+        // file.name = "file.txt"
+        // file.type = "text/plain"
+
+        let req = {
+          url: "http://example.com",
+          method: "POST",
+          headers: {
+            "x-custom-name": "multipart/form-data",
+            "content-type": "multipart/form-data"
+          },
+          body: {
+            id: "123",
+            file
+          }
+        }
+
+        let curlified = curl(Im.fromJS(req))
+
+        expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"x-custom-name: multipart/form-data\" -H  \"content-type: multipart/form-data\" -F \"id=123\" -F \"file=@file.txt;type=text/plain\"")
+      })
+    })
+
+    describe("and with trailing custom header; e.g. from requestInterceptor appending req.headers", function () {
+      it("should print a proper curl -F", function () {
+        let file = new win.File([""], "file.txt", { type: "text/plain" })
+        // file.name = "file.txt"
+        // file.type = "text/plain"
+
+        let req = {
+          url: "http://example.com",
+          method: "POST",
+          headers: {
+            "content-type": "multipart/form-data",
+            "x-custom-name": "any-value"
+          },
+          body: {
+            id: "123",
+            file
+          }
+        }
+
+        let curlified = curl(Im.fromJS(req))
+
+        expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"content-type: multipart/form-data\" -H  \"x-custom-name: any-value\" -F \"id=123\" -F \"file=@file.txt;type=text/plain\"")
+      })
+    })
+  })
+
+  describe("POST when header value is 'multipart/form-data' but header name is not 'content-type'", function () {
+    it("shoud print a proper curl as -d <data>, when file type is provided", function () {
+      let file = new win.File([""], "file.txt", { type: "text/plain" })
+      // file.name = "file.txt"
+      // file.type = "text/plain"
+
+      let req = {
+        url: "http://example.com",
+        method: "POST",
+        headers: { "x-custom-name": "multipart/form-data" },
+        body: {
+          id: "123",
+          file
+        }
+      }
+
+      let curlified = curl(Im.fromJS(req))
+
+      expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"x-custom-name: multipart/form-data\" -d {\"id\":\"123\",\"file\":{\"name\":\"file.txt\",\"type\":\"text/plain\"}}")
+    })
+
+    it("shoud print a proper curl as -d <data>, no file type provided", function () {
+      let file = new win.File([""], "file.txt")
+      // file.name = "file.txt"
+      // file.type = "text/plain"
+
+      let req = {
+        url: "http://example.com",
+        method: "POST",
+        headers: { "x-custom-name": "multipart/form-data" },
+        body: {
+          id: "123",
+          file
+        }
+      }
+
+      let curlified = curl(Im.fromJS(req))
+
+      expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"x-custom-name: multipart/form-data\" -d {\"id\":\"123\",\"file\":{\"name\":\"file.txt\"}}")
+    })
+  })
+
+  it("should escape dollar signs in headers and request body", function () {
+    let req = {
+      url: "http://example.com",
+      method: "POST",
+      headers: { "X-DOLLAR": "token/123$" },
+      body: "CREATE ($props)"
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -X POST \"http://example.com\" -H  \"X-DOLLAR: token/123\\$\" -d \"CREATE (\\$props)\"")
+  })
+})
--- a/test/unit/core/helpers/get-parameter-schema.js
+++ b/test/unit/core/helpers/get-parameter-schema.js
@@ -0,0 +1,147 @@
+/**
+ * @prettier
+ */
+
+import { fromJS } from "immutable"
+import getParameterSchema from "../../../../src/helpers/get-parameter-schema"
+
+describe("getParameterSchema", () => {
+  it("should return an empty Map when given no parameters", () => {
+    const result = getParameterSchema()
+
+    expect(result.schema.toJS()).toEqual({})
+    expect(result.parameterContentMediaType).toEqual(null)
+  })
+
+  it("should return an empty Map when given an empty Map", () => {
+    const result = getParameterSchema(fromJS({}))
+
+    expect(result.schema.toJS()).toEqual({})
+    expect(result.parameterContentMediaType).toEqual(null)
+  })
+
+  it("should return a schema for a Swagger 2.0 query parameter", () => {
+    const result = getParameterSchema(
+      fromJS({
+        name: "id",
+        in: "query",
+        description: "ID of the object to fetch",
+        required: false,
+        type: "array",
+        items: {
+          type: "string",
+        },
+        collectionFormat: "multi",
+      })
+    )
+
+    expect(result.schema.toJS()).toEqual({
+      type: "array",
+      items: {
+        type: "string",
+      },
+    })
+    expect(result.parameterContentMediaType).toEqual(null)
+  })
+
+  it("should return a schema for a Swagger 2.0 body parameter", () => {
+    const result = getParameterSchema(
+      fromJS({
+        name: "user",
+        in: "body",
+        description: "user to add to the system",
+        required: true,
+        schema: {
+          type: "array",
+          items: {
+            type: "string",
+          },
+        },
+      })
+    )
+
+    expect(result.schema.toJS()).toEqual({
+      type: "array",
+      items: {
+        type: "string",
+      },
+    })
+    expect(result.parameterContentMediaType).toEqual(null)
+  })
+
+  it("should return a schema for an OpenAPI 3.0 query parameter", () => {
+    const result = getParameterSchema(
+      fromJS({
+        name: "id",
+        in: "query",
+        description: "ID of the object to fetch",
+        required: false,
+        schema: {
+          type: "array",
+          items: {
+            type: "string",
+          },
+        },
+        style: "form",
+        explode: true,
+      }),
+      {
+        isOAS3: true,
+      }
+    )
+
+    expect(result.schema.toJS()).toEqual({
+      type: "array",
+      items: {
+        type: "string",
+      },
+    })
+    expect(result.parameterContentMediaType).toEqual(null)
+  })
+
+  it("should return a schema for an OpenAPI 3.0 query parameter with `content`", () => {
+    const result = getParameterSchema(
+      fromJS({
+        in: "query",
+        name: "coordinates",
+        content: {
+          "application/json": {
+            schema: {
+              type: "object",
+              required: ["lat", "long"],
+              properties: {
+                lat: {
+                  type: "number",
+                },
+                long: {
+                  type: "number",
+                },
+              },
+            },
+            "should-ignore/the-second-media-type": {
+              type: "string",
+              default: "this shouldn't be returned",
+            },
+          },
+        },
+      }),
+      {
+        isOAS3: true,
+      }
+    )
+
+    expect(result.schema.toJS()).toEqual({
+      type: "object",
+      required: ["lat", "long"],
+      properties: {
+        lat: {
+          type: "number",
+        },
+        long: {
+          type: "number",
+        },
+      },
+    })
+    expect(result.parameterContentMediaType).toEqual(`application/json`)
+  })
+})
--- a/test/unit/core/oauth2-authorize.js
+++ b/test/unit/core/oauth2-authorize.js
@@ -0,0 +1,77 @@
+
+import win from "core/window"
+import oauth2Authorize from "core/oauth2-authorize"
+import * as utils from "core/utils"
+
+describe("oauth2", () => {
+
+  let mockSchema = {
+    flow: "accessCode",
+    authorizationUrl: "https://testAuthorizationUrl"
+  }
+
+  let authConfig = {
+    auth: { schema: { get: (key)=> mockSchema[key] } }, 
+    authActions: {}, 
+    errActions: {}, 
+    configs: { oauth2RedirectUrl: "" }, 
+    authConfigs: {}
+  }
+
+  beforeEach(() => {
+    win.open = jest.fn()
+  })
+
+  describe("authorize redirect", () => {
+    it("should build authorize url", () => {
+      const windowOpenSpy = jest.spyOn(win, "open")
+      oauth2Authorize(authConfig)
+      expect(windowOpenSpy.mock.calls.length).toEqual(1)
+      expect(windowOpenSpy.mock.calls[0][0]).toMatch("https://testAuthorizationUrl?response_type=code&redirect_uri=&state=")
+
+      windowOpenSpy.mockReset()
+    })
+
+    it("should append query parameters to authorizeUrl with query parameters", () => {
+      const windowOpenSpy = jest.spyOn(win, "open")
+      mockSchema.authorizationUrl = "https://testAuthorizationUrl?param=1"
+      oauth2Authorize(authConfig)
+      expect(windowOpenSpy.mock.calls.length).toEqual(1)
+      expect(windowOpenSpy.mock.calls[0][0]).toMatch("https://testAuthorizationUrl?param=1&response_type=code&redirect_uri=&state=")
+      
+      windowOpenSpy.mockReset()
+    })
+
+    it("should send code_challenge when using authorizationCode flow with usePkceWithAuthorizationCodeGrant enabled", () => {
+      const windowOpenSpy = jest.spyOn(win, "open")
+      mockSchema.flow = "authorizationCode"
+
+      const expectedCodeVerifier = "mock_code_verifier"
+      const expectedCodeChallenge = "mock_code_challenge"
+      
+      const generateCodeVerifierSpy = jest.spyOn(utils, "generateCodeVerifier").mockImplementation(() => expectedCodeVerifier)
+      const createCodeChallengeSpy = jest.spyOn(utils, "createCodeChallenge").mockImplementation(() => expectedCodeChallenge)
+
+      authConfig.authConfigs.usePkceWithAuthorizationCodeGrant = true
+
+      oauth2Authorize(authConfig)
+      expect(win.open.mock.calls.length).toEqual(1)
+
+      const actualUrl = new URLSearchParams(win.open.mock.calls[0][0])
+      expect(actualUrl.get("code_challenge")).toBe(expectedCodeChallenge)
+      expect(actualUrl.get("code_challenge_method")).toBe("S256")
+
+      expect(createCodeChallengeSpy.mock.calls.length).toEqual(1)
+      expect(createCodeChallengeSpy.mock.calls[0][0]).toBe(expectedCodeVerifier)
+
+      // The code_verifier should be stored to be able to send in
+      // on the TokenUrl call
+      expect(authConfig.auth.codeVerifier).toBe(expectedCodeVerifier)
+
+      // Restore spies
+      windowOpenSpy.mockReset()
+      generateCodeVerifierSpy.mockReset()
+      createCodeChallengeSpy.mockReset()
+    })    
+  })
+})
--- a/test/unit/core/plugins/auth/actions.js
+++ b/test/unit/core/plugins/auth/actions.js
@@ -0,0 +1,187 @@
+
+import { authorizeRequest, authorizeAccessCodeWithFormParams } from "corePlugins/auth/actions"
+
+describe("auth plugin - actions", () => {
+
+  describe("authorizeRequest", () => {
+
+    [
+      [
+        {
+          oas3: true,
+          server: "https://host/resource",
+          effectiveServer: "https://host/resource",
+          scheme: "http",
+          host: null,
+          url: "http://specs/file",
+        },
+        "https://host/authorize"
+      ],
+      [
+        {
+          oas3: true,
+          server: "https://{selected_host}/resource",
+          effectiveServer: "https://host/resource",
+          scheme: "http",
+          host: null,
+          url: "http://specs/file",
+        },
+        "https://host/authorize"
+      ],
+      [
+        {
+          oas3: false,
+          server: null,
+          effectiveServer: null,
+          scheme: "https",
+          host: undefined,
+          url: "https://specs/file",
+        },
+        "https://specs/authorize"
+      ],
+      [
+        {
+          oas3: false,
+          server: null,
+          effectiveServer: null,
+          scheme: "https",
+          host: "host",
+          url: "http://specs/file",
+        },
+        "http://specs/authorize"
+      ],
+    ].forEach(([{oas3, server, effectiveServer, scheme, host, url}, expectedFetchUrl]) => {
+      it("should resolve authorization endpoint against the server URL", () => {
+
+        // Given
+        const data = {
+          url: "/authorize"
+        }
+        const system = {
+          fn: {
+            fetch: jest.fn().mockImplementation(() => Promise.resolve())
+          },
+          getConfigs: () => ({}),
+          authSelectors: {
+            getConfigs: () => ({})
+          },
+          oas3Selectors: {
+            selectedServer: () => server,
+            serverEffectiveValue: () => effectiveServer || server
+          },
+          specSelectors: {
+            isOAS3: () => oas3,
+            operationScheme: () => scheme,
+            host: () => host,
+            url: () => url
+          }
+        }
+
+        // When
+        authorizeRequest(data)(system)
+
+        // Then
+        expect(system.fn.fetch.mock.calls.length).toEqual(1)
+        expect(system.fn.fetch.mock.calls[0][0]).toEqual(expect.objectContaining({url: expectedFetchUrl}))
+      })
+    })
+
+    it("should add additionalQueryStringParams to Swagger 2.0 authorization and token URLs", () => {
+
+      // Given
+      const data = {
+        url: "/authorize?q=1"
+      }
+      const system = {
+        fn: {
+          fetch: jest.fn().mockImplementation(() => Promise.resolve())
+        },
+        getConfigs: () => ({}),
+        authSelectors: {
+          getConfigs: () => ({
+            additionalQueryStringParams: {
+              myCustomParam: "abc123"
+            }
+          })
+        },
+        specSelectors: {
+          isOAS3: () => false,
+          operationScheme: () => "https",
+          host: () => "http://google.com",
+          url: () => "http://google.com/swagger.json"
+        }
+      }
+
+      // When
+      authorizeRequest(data)(system)
+
+      // Then
+      expect(system.fn.fetch.mock.calls.length).toEqual(1)
+
+      expect(system.fn.fetch.mock.calls[0][0].url)
+        .toEqual("http://google.com/authorize?q=1&myCustomParam=abc123")
+    })
+
+    it("should add additionalQueryStringParams to OpenAPI 3.0 authorization and token URLs", () => {
+
+      // Given
+      const data = {
+        url: "/authorize?q=1"
+      }
+      const system = {
+        fn: {
+          fetch: jest.fn().mockImplementation(() => Promise.resolve())
+        },
+        getConfigs: () => ({}),
+        authSelectors: {
+          getConfigs: () => ({
+            additionalQueryStringParams: {
+              myCustomParam: "abc123"
+            }
+          })
+        },
+        oas3Selectors: {
+          selectedServer: () => "http://google.com",
+          serverEffectiveValue: () => "http://google.com"
+        },
+        specSelectors: {
+          isOAS3: () => true,
+        }
+      }
+
+      // When
+      authorizeRequest(data)(system)
+
+      // Then
+      expect(system.fn.fetch.mock.calls.length).toEqual(1)
+
+      expect(system.fn.fetch.mock.calls[0][0].url)
+        .toEqual("http://google.com/authorize?q=1&myCustomParam=abc123")
+    })
+  })
+
+  describe("tokenRequest", function() {
+    it("should send the code verifier when set", () => {
+      const data = {
+        auth: {
+          schema: {
+            get: () => "http://tokenUrl"
+          },
+          codeVerifier: "mock_code_verifier"
+        },
+        redirectUrl: "http://google.com"
+      }
+
+      const authActions = {
+        authorizeRequest: jest.fn()
+      }
+
+      authorizeAccessCodeWithFormParams(data)({ authActions })
+
+      expect(authActions.authorizeRequest.mock.calls.length).toEqual(1)
+      const actualArgument = authActions.authorizeRequest.mock.calls[0][0]
+      expect(actualArgument.body).toContain("code_verifier=" + data.auth.codeVerifier)
+      expect(actualArgument.body).toContain("grant_type=authorization_code")
+    })
+  })
+})
--- a/test/unit/core/plugins/auth/preauthorize.js
+++ b/test/unit/core/plugins/auth/preauthorize.js
@@ -0,0 +1,153 @@
+
+import { fromJS } from "immutable"
+import { preauthorizeBasic, preauthorizeApiKey } from "corePlugins/auth"
+import { authorize } from "corePlugins/auth/actions"
+
+const S2_SYSTEM = {
+  authActions: {
+    authorize
+  },
+  specSelectors: {
+    isOAS3: () => false,
+    specJson: () => {
+      return fromJS({
+        swagger: "2.0",
+        securityDefinitions: {
+          "APIKeyHeader": {
+            "type": "apiKey",
+            "in": "header",
+            "name": "X-API-Key"
+          },
+          "basicAuth": {
+            "type": "basic"
+          }
+        }
+      })
+    }
+  }
+}
+
+const OAI3_SYSTEM = {
+  authActions: {
+    authorize
+  },
+  specSelectors: {
+    isOAS3: () => true,
+    specJson: () => {
+      return fromJS({
+        openapi: "3.0.0",
+        components: {
+          securitySchemes: {
+            basicAuth: {
+              type: "http",
+              scheme: "basic"
+            },
+            APIKeyHeader: {
+              type: "apiKey",
+              in: "header",
+              name: "X-API-Key"
+            }
+          }
+        }
+      })
+    }
+  }
+}
+
+describe("auth plugin - preauthorizers", () => {
+  describe("preauthorizeBasic", () => {
+    it("should return a valid authorize action in Swagger 2", () => {
+      const res = preauthorizeBasic(S2_SYSTEM, "basicAuth", "user", "pass")
+
+      expect(res).toEqual({
+        type: "authorize",
+        payload: {
+          basicAuth: {
+            schema: {
+              type: "basic"
+            },
+            value: {
+              username: "user",
+              password: "pass"
+            }
+          }
+        }
+      })
+    })
+    it("should return a valid authorize action in OpenAPI 3", () => {
+      const res = preauthorizeBasic(OAI3_SYSTEM, "basicAuth", "user", "pass")
+
+      expect(res).toEqual({
+        type: "authorize",
+        payload: {
+          basicAuth: {
+            schema: {
+              type: "http",
+              scheme: "basic"
+            },
+            value: {
+              username: "user",
+              password: "pass"
+            }
+          }
+        }
+      })
+    })
+    it("should return null when the authorization name is invalid in Swagger 2", () => {
+      const res = preauthorizeBasic(S2_SYSTEM, "fakeBasicAuth", "user", "pass")
+
+      expect(res).toEqual(null)
+    })
+    it("should return null when the authorization name is invalid in OpenAPI 3", () => {
+      const res = preauthorizeBasic(OAI3_SYSTEM, "fakeBasicAuth", "user", "pass")
+
+      expect(res).toEqual(null)
+    })
+  })
+  describe("preauthorizeApiKey", () => {
+    it("should return a valid authorize action in Swagger 2", () => {
+      const res = preauthorizeApiKey(S2_SYSTEM, "APIKeyHeader", "Asdf1234")
+
+      expect(res).toEqual({
+        type: "authorize",
+        payload: {
+          APIKeyHeader: {
+            schema: {
+              type: "apiKey",
+              name: "X-API-Key",
+              "in": "header"
+            },
+            value: "Asdf1234"
+          }
+        }
+      })
+    })
+    it("should return a valid authorize action in OpenAPI 3", () => {
+      const res = preauthorizeApiKey(OAI3_SYSTEM, "APIKeyHeader", "Asdf1234")
+
+      expect(res).toEqual({
+        type: "authorize",
+        payload: {
+          APIKeyHeader: {
+            schema: {
+              type: "apiKey",
+              "in": "header",
+              name: "X-API-Key"
+            },
+            value: "Asdf1234"
+          }
+        }
+      })
+    })
+    it("should return null when the authorization name is invalid in Swagger 2", () => {
+      const res = preauthorizeApiKey(S2_SYSTEM, "FakeAPIKeyHeader", "Asdf1234")
+
+      expect(res).toEqual(null)
+    })
+    it("should return null when the authorization name is invalid in OpenAPI 3", () => {
+      const res = preauthorizeApiKey(OAI3_SYSTEM, "FakeAPIKeyHeader", "Asdf1234")
+
+      expect(res).toEqual(null)
+    })
+  })
+})
--- a/test/unit/core/plugins/auth/selectors.js
+++ b/test/unit/core/plugins/auth/selectors.js
@@ -0,0 +1,132 @@
+
+import { fromJS } from "immutable"
+import { definitionsToAuthorize, definitionsForRequirements } from "corePlugins/auth/selectors"
+
+describe("auth plugin - selectors", () => {
+  describe("definitionsToAuthorize", () => {
+    it("should return securityDefinitions as a List", () => {
+      const securityDefinitions = {
+        "petstore_auth": {
+          "type": "oauth2",
+          "authorizationUrl": "http://petstore.swagger.io/oauth/dialog",
+          "flow": "implicit",
+          "scopes": {
+            "write:pets": "modify pets in your account",
+            "read:pets": "read your pets"
+          }
+        },
+        "api_key": {
+          "type": "apiKey",
+          "name": "api_key",
+          "in": "header"
+        }
+      }
+
+      const system = {
+        specSelectors: {
+          securityDefinitions() {
+            return fromJS(securityDefinitions)
+          }
+        }
+      }
+
+      const res = definitionsToAuthorize({})(system)
+
+      expect(res.toJS()).toEqual([
+        {
+          "petstore_auth": securityDefinitions["petstore_auth"]
+        },
+        {
+          "api_key": securityDefinitions["api_key"]
+        },
+      ])
+    })
+
+    it("should fail gracefully with bad data", () => {
+      const securityDefinitions = null
+
+      const system = {
+        specSelectors: {
+          securityDefinitions() {
+            return fromJS(securityDefinitions)
+          }
+        }
+      }
+
+      const res = definitionsToAuthorize({})(system)
+
+      expect(res.toJS()).toEqual([])
+    })
+  })
+
+  describe("definitionsForRequirements", () => {
+    it("should return applicable securityDefinitions as a List", () => {
+      const securityDefinitions = {
+        "petstore_auth": {
+          "type": "oauth2",
+          "authorizationUrl": "http://petstore.swagger.io/oauth/dialog",
+          "flow": "implicit",
+          "scopes": {
+            "write:pets": "modify pets in your account",
+            "read:pets": "read your pets"
+          }
+        },
+        "api_key": {
+          "type": "apiKey",
+          "name": "api_key",
+          "in": "header"
+        }
+      }
+
+      const system = {
+        authSelectors: {
+          definitionsToAuthorize() {
+            return fromJS([
+              {
+                "petstore_auth": securityDefinitions["petstore_auth"]
+              },
+              {
+                "api_key": securityDefinitions["api_key"]
+              },
+            ])
+          }
+        }
+      }
+
+      const securities = fromJS([
+        {
+          "petstore_auth": [
+            "write:pets",
+            "read:pets"
+          ]
+        }
+      ])
+
+      const res = definitionsForRequirements({}, securities)(system)
+
+      expect(res.toJS()).toEqual([
+        {
+          "petstore_auth": securityDefinitions["petstore_auth"]
+        }
+      ])
+    })
+
+    it("should fail gracefully with bad data", () => {
+      const securityDefinitions = null
+
+      const system = {
+        authSelectors: {
+          definitionsToAuthorize() {
+            return null
+          }
+        }
+      }
+
+      const securities = null
+
+      const res = definitionsForRequirements({}, securities)(system)
+
+      expect(res.toJS()).toEqual([])
+    })
+  })
+})
--- a/test/unit/core/plugins/auth/wrap-spec-actions.js
+++ b/test/unit/core/plugins/auth/wrap-spec-actions.js
@@ -0,0 +1,40 @@
+
+import { execute } from "corePlugins/auth/spec-wrap-actions"
+
+describe("spec plugin - actions", function(){
+
+  describe("execute", function(){
+
+    xit("should add `securities` to the oriAction call", function(){
+      // Given
+      const system = {
+        authSelectors: {
+          authorized: jest.fn().mockImplementation(() => ({
+            some: "security"
+          }))
+        }
+      }
+      const oriExecute = jest.fn()
+
+      // When
+      let executeFn = execute(oriExecute, system)
+      executeFn({})
+
+      // Then
+      expect(oriExecute.mock.calls.length).toEqual(1)
+      expect(oriExecute.mock.calls[0][0]).toEqual({
+        extras: {
+          security: {
+            some: "security"
+          }
+        },
+        method: undefined,
+        path: undefined,
+        operation: undefined
+      })
+
+    })
+
+  })
+
+})
--- a/test/unit/core/plugins/configs/actions.js
+++ b/test/unit/core/plugins/configs/actions.js
@@ -0,0 +1,26 @@
+
+import { downloadConfig } from "corePlugins/configs/spec-actions"
+
+describe("configs plugin - actions", () => {
+
+  describe("downloadConfig", () => {
+    it("should call the system fetch helper with a provided request", () => {
+      const fetchSpy = jest.fn(async () => {})
+      const system = {
+        fn: {
+          fetch: fetchSpy
+        }
+      }
+
+      const req = {
+        url: "http://swagger.io/one",
+        requestInterceptor: a => a,
+        responseInterceptor: a => a,
+      }
+
+      downloadConfig(req)(system)
+
+      expect(fetchSpy).toHaveBeenCalledWith(req)
+    })
+  })
+})
--- a/test/unit/core/plugins/err/transformers/not-of-type.js
+++ b/test/unit/core/plugins/err/transformers/not-of-type.js
@@ -0,0 +1,54 @@
+import { Map, List } from "immutable"
+import { transform } from "corePlugins/err/error-transformers/transformers/not-of-type"
+
+describe("err plugin - tranformers - not of type", () => {
+
+  it("should transform a singular not of type(s) error without an inline path", () => {
+    let ori = List([
+      Map({
+        path: "info.version",
+        message: "is not of a type(s) string"
+      })
+    ])
+
+    let res = transform(ori).toJS()
+
+    expect(res).toEqual([{
+      path: "info.version",
+      message: "should be a string"
+    }])
+  })
+
+  it("should transform a plural (2) not of type(s) error without an inline path", () => {
+    let ori = List([
+      Map({
+        path: "info.version",
+        message: "is not of a type(s) string,array"
+      })
+    ])
+
+    let res = transform(ori).toJS()
+
+    expect(res).toEqual([{
+      path: "info.version",
+      message: "should be a string or array"
+    }])
+  })
+
+  it("should transform a plural (3+) not of type(s) error without an inline path", () => {
+    let ori = List([
+      Map({
+        path: "info.version",
+        message: "is not of a type(s) string,array,number"
+      })
+    ])
+
+    let res = transform(ori).toJS()
+
+    expect(res).toEqual([{
+      path: "info.version",
+      message: "should be a string, array, or number"
+    }])
+  })
+
+})
--- a/test/unit/core/plugins/err/transformers/parameter-oneof.js
+++ b/test/unit/core/plugins/err/transformers/parameter-oneof.js
@@ -0,0 +1,131 @@
+/* eslint-disable no-useless-escape */
+import { fromJS } from "immutable"
+import { transform } from "corePlugins/err/error-transformers/transformers/parameter-oneof"
+
+describe.skip("err plugin - tranformers - parameter oneof", () => {
+
+  describe("parameter.in misuse transformation to fixed value error", () => {
+
+    it("should return a helpful error for invalid 'in' values", () => {
+      const jsSpec = {
+        paths: {
+          "/CoolPath/": {
+            get: {
+              parameters: [
+                {
+                  name: "id",
+                  in: "heder"
+                }
+              ]
+            }
+          }
+        }
+      }
+
+      const jsonSchemaError = {
+        "level": "error",
+        "path": "paths.\/CoolPath\/.get.parameters[0]",
+        "message": "is not exactly one from <#\/definitions\/parameter>,<#\/definitions\/jsonReference>",
+        "source": "schema",
+        "type": "spec"
+      }
+
+      let res = transform(fromJS([jsonSchemaError]), { jsSpec })
+
+      expect(res.toJS()).toEqual([{
+        path: "paths./CoolPath/.get.parameters[0].in",
+        message: "Wrong value for the \"in\" keyword. Expected one of: path, query, header, body, formData.",
+        level: "error",
+        source: "schema",
+        type: "spec"
+      }])
+    })
+
+  })
+
+  describe("parameter.collectionFormat misuse transformation to fixed value error", () => {
+    it("should return a helpful error for invalid 'collectionFormat' values", () => {
+      const jsSpec = {
+        paths: {
+          "/CoolPath/": {
+            get: {
+              parameters: [
+                {
+                  name: "id",
+                  in: "query",
+                  collectionFormat: "asdf"
+                }
+              ]
+            }
+          }
+        }
+      }
+
+      const jsonSchemaError = {
+        "level": "error",
+        "path": "paths.\/CoolPath\/.get.parameters[0]",
+        "message": "is not exactly one from <#\/definitions\/parameter>,<#\/definitions\/jsonReference>",
+        "source": "schema",
+        "type": "spec"
+      }
+
+      let res = transform(fromJS([jsonSchemaError]), { jsSpec })
+
+      expect(res.toJS()).toEqual([{
+        path: "paths./CoolPath/.get.parameters[0].collectionFormat",
+        message: "Wrong value for the \"collectionFormat\" keyword. Expected one of: csv, ssv, tsv, pipes, multi.",
+        level: "error",
+        source: "schema",
+        type: "spec"
+      }])
+    })
+  })
+
+  describe("Integrations", () => {
+    it("should return the correct errors when both 'in' and 'collectionFormat' are incorrect", () => {
+      const jsSpec = {
+        paths: {
+          "/CoolPath/": {
+            get: {
+              parameters: [
+                {
+                  name: "id",
+                  in: "blah",
+                  collectionFormat: "asdf"
+                }
+              ]
+            }
+          }
+        }
+      }
+
+      const jsonSchemaError = {
+        "level": "error",
+        "path": "paths.\/CoolPath\/.get.parameters[0]",
+        "message": "is not exactly one from <#\/definitions\/parameter>,<#\/definitions\/jsonReference>",
+        "source": "schema",
+        "type": "spec"
+      }
+
+      let res = transform(fromJS([jsonSchemaError]), { jsSpec })
+
+      expect(res.toJS()).toEqual([
+        {
+          path: "paths./CoolPath/.get.parameters[0].in",
+          message: "Wrong value for the \"in\" keyword. Expected one of: path, query, header, body, formData.",
+          level: "error",
+          source: "schema",
+          type: "spec"
+        },
+        {
+          path: "paths./CoolPath/.get.parameters[0].collectionFormat",
+          message: "Wrong value for the \"collectionFormat\" keyword. Expected one of: csv, ssv, tsv, pipes, multi.",
+          level: "error",
+          source: "schema",
+          type: "spec"
+        }
+    ])
+    })
+  })
+
+})
--- a/test/unit/core/plugins/filter/opsFilter.js
+++ b/test/unit/core/plugins/filter/opsFilter.js
@@ -0,0 +1,24 @@
+import { Map } from "immutable"
+import opsFilter from "corePlugins/filter/opsFilter"
+
+describe("opsFilter", function() {
+  const taggedOps = Map([["pet"], ["store"], ["user"]])
+
+  it("should filter taggedOps by tag name", function () {
+    const filtered = opsFilter(taggedOps, "sto")
+
+    expect(filtered.size).toEqual(1)
+  })
+
+  it("should return all taggedOps when search phrase is empty", function () {
+    const filtered = opsFilter(taggedOps, "")
+
+    expect(filtered.size).toEqual(taggedOps.size)
+  })
+
+  it("should return empty result when there is no match", function () {
+    const filtered = opsFilter(taggedOps, "NoMatch")
+
+    expect(filtered.size).toEqual(0)
+  })
+})
--- a/test/unit/core/plugins/oas3/helpers.js
+++ b/test/unit/core/plugins/oas3/helpers.js
@@ -0,0 +1,67 @@
+import { fromJS } from "immutable"
+import { isOAS3, isSwagger2 } from "corePlugins/oas3/helpers"
+
+const isOAS3Shorthand = (version) => isOAS3(fromJS({
+  openapi: version
+}))
+
+const isSwagger2Shorthand = (version) => isSwagger2(fromJS({
+  swagger: version
+}))
+
+describe("isOAS3", function () {
+  it("should recognize valid OAS3 version values", function () {
+    expect(isOAS3Shorthand("3.0.0")).toEqual(true)
+    expect(isOAS3Shorthand("3.0.1")).toEqual(true)
+    expect(isOAS3Shorthand("3.0.11111")).toEqual(true)
+    expect(isOAS3Shorthand("3.0.0-rc0")).toEqual(true)
+  })
+
+  it("should fail for invalid OAS3 version values", function () {
+    expect(isOAS3Shorthand("3.0")).toEqual(false)
+    expect(isOAS3Shorthand("3.0.")).toEqual(false)
+    expect(isOAS3Shorthand("2.0")).toEqual(false)
+  })
+
+  it("should gracefully fail for non-string values", function () {
+    expect(isOAS3Shorthand(3.0)).toEqual(false)
+    expect(isOAS3Shorthand(3)).toEqual(false)
+    expect(isOAS3Shorthand({})).toEqual(false)
+    expect(isOAS3Shorthand(null)).toEqual(false)
+  })
+
+  it("should gracefully fail when `openapi` field is missing", function () {
+    expect(isOAS3(fromJS({
+      openApi: "3.0.0"
+    }))).toEqual(false)
+    expect(isOAS3Shorthand(null)).toEqual(false)
+  })
+})
+
+describe("isSwagger2", function () {
+  it("should recognize valid Swagger 2.0 version values", function () {
+    expect(isSwagger2Shorthand("2.0")).toEqual(true)
+    expect(isSwagger2Shorthand("2.0-rc0")).toEqual(true)
+  })
+
+  it("should fail for invalid Swagger 2.0 version values", function () {
+    expect(isSwagger2Shorthand("3.0")).toEqual(false)
+    expect(isSwagger2Shorthand("3.0.")).toEqual(false)
+    expect(isSwagger2Shorthand("2.1")).toEqual(false)
+    expect(isSwagger2Shorthand("1.2")).toEqual(false)
+    expect(isSwagger2Shorthand("2")).toEqual(false)
+  })
+
+  it("should gracefully fail for non-string values", function () {
+    expect(isSwagger2Shorthand(2.0)).toEqual(false)
+    expect(isSwagger2Shorthand(2)).toEqual(false)
+    expect(isSwagger2Shorthand({})).toEqual(false)
+    expect(isSwagger2Shorthand(null)).toEqual(false)
+  })
+
+  it("should gracefully fail when `swagger` field is missing", function () {
+    expect(isSwagger2(fromJS({
+      Swagger: "2.0"
+    }))).toEqual(false)
+  })
+})
--- a/test/unit/core/plugins/oas3/reducers.js
+++ b/test/unit/core/plugins/oas3/reducers.js
@@ -0,0 +1,507 @@
+
+import { fromJS } from "immutable"
+import reducer from "corePlugins/oas3/reducers"
+
+describe("oas3 plugin - reducer", function () {
+  describe("SET_REQUEST_BODY_VALIDATE_ERROR", () => {
+    const setRequestBodyValidateError = reducer["oas3_set_request_body_validate_error"]
+
+    describe("missingBodyValue exists, e.g. application/json", () => {
+      it("should set errors", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: "",
+                requestContentType: "application/json"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: true,
+              missingRequiredKeys: []
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: "",
+                requestContentType: "application/json",
+                errors: ["Required field is not provided"]
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+
+    describe("missingRequiredKeys exists with length, e.g. application/x-www-form-urleconded", () => {
+      it("should set nested errors", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: null,
+              missingRequiredKeys: ["name"]
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                    errors: ["Required field is not provided"]
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+
+      it("should overwrite nested errors, for keys listed in missingRequiredKeys", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                    errors: ["some fake error"]
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: null,
+              missingRequiredKeys: ["name"]
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                    errors: ["Required field is not provided"]
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+
+      it("should not overwrite nested errors, for keys not listed in missingRequiredKeys", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                    errors: ["random error should not be overwritten"]
+                  },
+                  name: {
+                    value: "",
+                    errors: ["some fake error"]
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: null,
+              missingRequiredKeys: ["name"]
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                    errors: ["random error should not be overwritten"]
+                  },
+                  name: {
+                    value: "",
+                    errors: ["Required field is not provided"]
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+
+      it("should set multiple nested errors", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "",
+                  },
+                  name: {
+                    value: "",
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: null,
+              missingRequiredKeys: ["id", "name"]
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "",
+                    errors: ["Required field is not provided"]
+                  },
+                  name: {
+                    value: "",
+                    errors: ["Required field is not provided"]
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+
+    describe("missingRequiredKeys is empty list", () => {
+      it("should not set any errors, and return state unchanged", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: null,
+              missingRequiredKeys: []
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+
+    describe("other unexpected payload, e.g. no missingBodyValue or missingRequiredKeys", () => {
+      it("should not throw error if receiving unexpected validationError format. return state unchanged", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = setRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+            validationErrors: {
+              missingBodyValue: null,
+              // missingRequiredKeys: ["none provided"]
+            },
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                  },
+                  name: {
+                    value: "",
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+  })
+
+  describe("CLEAR_REQUEST_BODY_VALIDATE_ERROR", function() {
+    const clearRequestBodyValidateError = reducer["oas3_clear_request_body_validate_error"]
+
+    describe("bodyValue is String, e.g. application/json", () => {
+      it("should clear errors", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: "{}",
+                requestContentType: "application/json"
+              }
+            }
+          }
+        })
+
+        const result = clearRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: "{}",
+                requestContentType: "application/json",
+                errors: []
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+
+    describe("bodyValue is Map with entries, e.g. application/x-www-form-urleconded", () => {
+      it("should clear nested errors, and apply empty error list to all entries", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                    errors: ["some random error"]
+                  },
+                  name: {
+                    value: "doggie",
+                    errors: ["Required field is not provided"]
+                  },
+                  status: {
+                    value: "available"
+                  }
+                },
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = clearRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                  id: {
+                    value: "10",
+                    errors: [],
+                  },
+                  name: {
+                    value: "doggie",
+                    errors: [],
+                  },
+                  status: {
+                    value: "available",
+                    errors: [],
+                  },
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+
+    describe("bodyValue is empty Map", () => {
+      it("should return state unchanged", () => {
+        const state = fromJS({
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {},
+                requestContentType: "application/x-www-form-urlencoded"
+              }
+            }
+          }
+        })
+
+        const result = clearRequestBodyValidateError(state, {
+          payload: {
+            path: "/pet",
+            method: "post",
+          }
+        })
+
+        const expectedResult = {
+          requestData: {
+            "/pet": {
+              post: {
+                bodyValue: {
+                },
+                requestContentType: "application/x-www-form-urlencoded",
+              }
+            }
+          }
+        }
+
+        expect(result.toJS()).toEqual(expectedResult)
+      })
+    })
+  })
+
+})
--- a/test/unit/core/plugins/oas3/servers-wrapper.jsx
+++ b/test/unit/core/plugins/oas3/servers-wrapper.jsx
@@ -0,0 +1,75 @@
+
+import React from "react"
+import { mount } from "enzyme"
+import { fromJS } from "immutable"
+import ServersContainer from "core/plugins/oas3/components/servers-container"
+import Servers from "core/plugins/oas3/components/servers"
+import { Col } from "components/layout-utils"
+
+describe("<ServersContainer/>", function(){
+
+  const components = {
+    Servers,
+    Col
+  }
+  const mockedProps = {
+    specSelectors: {
+      servers() {}
+    },
+    oas3Selectors: {
+      selectedServer() {},
+      serverVariableValue() {},
+      serverEffectiveValue() {}
+    },
+    oas3Actions: {
+      setSelectedServer() {},
+      setServerVariableValue() {}
+    },
+    getComponent: c => components[c]
+  }
+
+  it("renders Servers inside ServersContainer if servers are provided", function(){
+
+    // Given
+    let props = {...mockedProps}
+    props.specSelectors = {...mockedProps.specSelectors}
+    props.specSelectors.servers = function() {return fromJS([{url: "http://server1.com"}])}
+    props.oas3Selectors = {...mockedProps.oas3Selectors}
+    props.oas3Selectors.selectedServer = function() {return "http://server1.com"}
+
+    // When
+    let wrapper = mount(<ServersContainer {...props}/>)
+
+    // Then
+    const renderedServers = wrapper.find(Servers)
+    expect(renderedServers.length).toEqual(1)
+  })
+
+  it("does not render Servers inside ServersContainer if servers are empty", function(){
+
+    // Given
+    let props = {...mockedProps}
+    props.specSelectors = {...mockedProps.specSelectors}
+    props.specSelectors.servers = function() {return fromJS([])}
+
+    // When
+    let wrapper = mount(<ServersContainer {...props}/>)
+
+    // Then
+    const renderedServers = wrapper.find(Servers)
+    expect(renderedServers.length).toEqual(0)
+  })
+
+  it("does not render Servers inside ServersContainer if servers are undefined", function(){
+
+    // Given
+    let props = {...mockedProps}
+
+    // When
+    let wrapper = mount(<ServersContainer {...props}/>)
+
+    // Then
+    const renderedServers = wrapper.find(Servers)
+    expect(renderedServers.length).toEqual(0)
+  })
+})
--- a/test/unit/core/plugins/oas3/state-integration.js
+++ b/test/unit/core/plugins/oas3/state-integration.js
@@ -0,0 +1,358 @@
+import { fromJS, OrderedMap } from "immutable"
+
+import {
+  selectedServer,
+  serverVariableValue,
+  serverVariables,
+  serverEffectiveValue
+} from "corePlugins/oas3/selectors"
+
+import reducers from "corePlugins/oas3/reducers"
+
+import {
+  setSelectedServer,
+  setServerVariableValue,
+} from "corePlugins/oas3/actions"
+
+describe("OAS3 plugin - state", function() {
+  describe("action + reducer + selector integration", function() {
+    describe("selectedServer", function() {
+      it("should set and get a global selectedServer", function() {
+        const state = new OrderedMap()
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Create the action
+        const action = setSelectedServer("http://google.com")
+
+        // Collect the new state
+        const newState = reducers["oas3_set_servers"](state, action)
+
+        // Get the value with the selector
+        const res = selectedServer(newState)(system)
+
+        expect(res).toEqual("http://google.com")
+      })
+
+      it("should set and get a namespaced selectedServer", function() {
+        const state = fromJS({
+          selectedServer: "http://yahoo.com"
+        })
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Create the action
+        const action = setSelectedServer("http://google.com", "myOperation")
+
+        // Collect the new state
+        const newState = reducers["oas3_set_servers"](state, action)
+
+        // Get the value with the selector
+        const res = selectedServer(newState, "myOperation")(system)
+
+        // Get the global selected server
+        const globalRes = selectedServer(newState)(system)
+
+        expect(res).toEqual("http://google.com")
+        expect(globalRes).toEqual("http://yahoo.com")
+      })
+    })
+
+    describe("serverVariableValue", function() {
+      it("should set and get a global serverVariableValue", function() {
+        const state = new OrderedMap()
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Create the action
+        const action = setServerVariableValue({
+          server: "google.com",
+          key: "foo",
+          val: "bar"
+        })
+
+        // Collect the new state
+        const newState = reducers["oas3_set_server_variable_value"](state, action)
+
+        // Get the value with the selector
+        const res = serverVariableValue(newState, "google.com", "foo")(system)
+
+        expect(res).toEqual("bar")
+      })
+      it("should set and get a namespaced serverVariableValue", function() {
+        const state = fromJS({
+          serverVariableValues: {
+            "google.com": {
+              foo: "123"
+            }
+          }
+        })
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Create the action
+        const action = setServerVariableValue({
+          namespace: "myOperation",
+          server: "google.com",
+          key: "foo",
+          val: "bar"
+        })
+
+        // Collect the new state
+        const newState = reducers["oas3_set_server_variable_value"](state, action)
+
+        // Get the value with the selector
+        const res = serverVariableValue(newState, {
+          namespace: "myOperation",
+          server: "google.com"
+        }, "foo")(system)
+
+        // Get the global value, to cross-check
+        const globalRes = serverVariableValue(newState, {
+          server: "google.com"
+        }, "foo")(system)
+
+        expect(res).toEqual("bar")
+        expect(globalRes).toEqual("123")
+      })
+    })
+
+    describe("serverVariables", function() {
+      it("should set and get global serverVariables", function() {
+        const state = new OrderedMap()
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Create the action
+        const action = setServerVariableValue({
+          server: "google.com",
+          key: "foo",
+          val: "bar"
+        })
+
+        // Collect the new state
+        const newState = reducers["oas3_set_server_variable_value"](state, action)
+
+        // Get the value with the selector
+        const res = serverVariables(newState, "google.com", "foo")(system)
+
+        expect(res.toJS()).toEqual({
+          foo: "bar"
+        })
+      })
+
+      it("should set and get namespaced serverVariables", function() {
+        const state = fromJS({
+          serverVariableValues: {
+            "google.com": {
+              foo: "123"
+            }
+          }
+        })
+
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Create the action
+        const action = setServerVariableValue({
+          namespace: "myOperation",
+          server: "google.com",
+          key: "foo",
+          val: "bar"
+        })
+
+        // Collect the new state
+        const newState = reducers["oas3_set_server_variable_value"](state, action)
+
+        // Get the value with the selector
+        const res = serverVariables(newState, {
+          namespace: "myOperation",
+          server: "google.com"
+        }, "foo")(system)
+
+        // Get the global value, to cross-check
+        const globalRes = serverVariables(newState, {
+          server: "google.com"
+        }, "foo")(system)
+
+        expect(res.toJS()).toEqual({
+          foo: "bar"
+        })
+
+        expect(globalRes.toJS()).toEqual({
+          foo: "123"
+        })
+      })
+    })
+    describe("serverEffectiveValue", function() {
+        it("should set variable values and compute a URL for a namespaced server", function() {
+          const state = fromJS({
+            serverVariableValues: {
+              "google.com/{foo}": {
+                foo: "123"
+              }
+            }
+          })
+
+          const system = {
+            // needed to handle `onlyOAS3` wrapper
+            getSystem() {
+              return {
+                specSelectors: {
+                  specJson: () => {
+                    return fromJS({ openapi: "3.0.0" })
+                  }
+                }
+              }
+            }
+          }
+
+          // Create the action
+          const action = setServerVariableValue({
+            namespace: "myOperation",
+            server: "google.com/{foo}",
+            key: "foo",
+            val: "bar"
+          })
+
+          // Collect the new state
+          const newState = reducers["oas3_set_server_variable_value"](state, action)
+
+          // Get the value with the selector
+          const res = serverEffectiveValue(newState, {
+            namespace: "myOperation",
+            server: "google.com/{foo}"
+          })(system)
+
+          // Get the global value, to cross-check
+          const globalRes = serverEffectiveValue(newState, {
+            server: "google.com/{foo}"
+          })(system)
+
+          expect(res).toEqual("google.com/bar")
+
+          expect(globalRes).toEqual("google.com/123")
+        })
+      })
+
+  })
+  describe("selectors", function() {
+    describe("serverEffectiveValue", function() {
+      it("should compute global serverEffectiveValues", function() {
+        const state = fromJS({
+          serverVariableValues: {
+            "google.com/{foo}/{bar}": {
+              foo: "123",
+              bar: "456"
+            }
+          }
+        })
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Get the value with the selector
+        const res = serverEffectiveValue(state, "google.com/{foo}/{bar}")(system)
+
+        expect(res).toEqual("google.com/123/456")
+      })
+
+      it("should handle multiple variable instances", function() {
+        const state = fromJS({
+          serverVariableValues: {
+            "google.com/{foo}/{foo}/{bar}": {
+              foo: "123",
+              bar: "456"
+            }
+          }
+        })
+        const system = {
+          // needed to handle `onlyOAS3` wrapper
+          getSystem() {
+            return {
+              specSelectors: {
+                specJson: () => {
+                  return fromJS({ openapi: "3.0.0" })
+                }
+              }
+            }
+          }
+        }
+
+        // Get the value with the selector
+        const res = serverEffectiveValue(state, "google.com/{foo}/{foo}/{bar}")(system)
+
+        expect(res).toEqual("google.com/123/123/456")
+      })
+    })
+  })
+})
--- a/test/unit/core/plugins/oas3/wrap-auth-selectors.js
+++ b/test/unit/core/plugins/oas3/wrap-auth-selectors.js
@@ -0,0 +1,115 @@
+
+import { fromJS } from "immutable"
+import {
+  definitionsToAuthorize
+} from "corePlugins/oas3/auth-extensions/wrap-selectors"
+
+describe("oas3 plugin - auth extensions - wrapSelectors", function(){
+
+  describe("execute", function(){
+
+    it("should add `securities` to the oriAction call", function(){
+      // Given
+      const system = {
+        getSystem: () => system,
+        specSelectors: {
+          specJson: () => fromJS({
+            openapi: "3.0.0"
+          }),
+          securityDefinitions: () => {
+            return fromJS({
+              "oauth2AuthorizationCode": {
+                "type": "oauth2",
+                "flows": {
+                  "authorizationCode": {
+                    "authorizationUrl": "http://google.com/",
+                    "tokenUrl": "http://google.com/",
+                    "scopes": {
+                      "myScope": "our only scope"
+                    }
+                  }
+                }
+              },
+              "oauth2Multiflow": {
+                "type": "oauth2",
+                "flows": {
+                  "clientCredentials": {
+                    "tokenUrl": "http://google.com/",
+                    "scopes": {
+                      "myScope": "our only scope"
+                    }
+                  },
+                  "password": {
+                    "tokenUrl": "http://google.com/",
+                    "scopes": {
+                      "myScope": "our only scope"
+                    }
+                  },
+                  "authorizationCode": {
+                    "authorizationUrl": "http://google.com/",
+                    "tokenUrl": "http://google.com/",
+                    "scopes": {
+                      "myScope": "our only scope"
+                    }
+                  }
+                }
+              }
+            })
+          }
+        }
+      }
+
+      // When
+      let res = definitionsToAuthorize(() => null, system)()
+
+      // Then
+      expect(res.toJS()).toEqual([
+        {
+          oauth2AuthorizationCode: {
+            flow: "authorizationCode",
+            authorizationUrl: "http://google.com/",
+            tokenUrl: "http://google.com/",
+            scopes: {
+              "myScope": "our only scope"
+            },
+            type: "oauth2"
+          }
+        },
+        {
+          oauth2Multiflow: {
+            flow: "clientCredentials",
+            tokenUrl: "http://google.com/",
+            scopes: {
+              "myScope": "our only scope"
+            },
+            type: "oauth2"
+          }
+        },
+        {
+          oauth2Multiflow: {
+            flow: "password",
+            tokenUrl: "http://google.com/",
+            scopes: {
+              "myScope": "our only scope"
+            },
+            type: "oauth2"
+          }
+        },
+        {
+          oauth2Multiflow: {
+            flow: "authorizationCode",
+            authorizationUrl: "http://google.com/",
+            tokenUrl: "http://google.com/",
+            scopes: {
+              "myScope": "our only scope"
+            },
+            type: "oauth2"
+          }
+        },
+      ])
+
+    })
+
+  })
+
+})
--- a/test/unit/core/plugins/oas3/wrap-spec-selectors.js
+++ b/test/unit/core/plugins/oas3/wrap-spec-selectors.js
@@ -0,0 +1,98 @@
+
+import { fromJS } from "immutable"
+import {
+  definitions
+} from "corePlugins/oas3/spec-extensions/wrap-selectors"
+
+describe("oas3 plugin - spec extensions - wrapSelectors", function(){
+
+  describe("definitions", function(){
+    it("should return definitions by default", function () {
+
+      // Given
+      const spec = fromJS({
+        openapi: "3.0.0",
+        components: {
+          schemas: {
+            a: {
+              type: "string"
+            },
+            b: {
+              type: "string"
+            }
+          }
+        }
+      })
+
+      const system = {
+        getSystem: () => system,
+        specSelectors: {
+          specJson: () => spec,
+        }
+      }
+
+      // When
+      let res = definitions(() => null, system)(fromJS({
+        json: spec
+      }))
+
+      // Then
+      expect(res.toJS()).toEqual({
+        a: {
+          type: "string"
+        },
+        b: {
+          type: "string"
+        }
+      })
+    })
+    it("should return an empty Map when missing definitions", function () {
+
+      // Given
+      const spec = fromJS({
+        openapi: "3.0.0"
+      })
+
+      const system = {
+        getSystem: () => system,
+        specSelectors: {
+          specJson: () => spec,
+        }
+      }
+
+      // When
+      let res = definitions(() => null, system)(fromJS({
+        json: spec
+      }))
+
+      // Then
+      expect(res.toJS()).toEqual({})
+    })
+    it("should return an empty Map when given non-object definitions", function () {
+
+      // Given
+      const spec = fromJS({
+        openapi: "3.0.0",
+        components: {
+          schemas: "..."
+        }
+      })
+
+      const system = {
+        getSystem: () => system,
+        specSelectors: {
+          specJson: () => spec,
+        }
+      }
+
+      // When
+      let res = definitions(() => null, system)(fromJS({
+        json: spec
+      }))
+
+      // Then
+      expect(res.toJS()).toEqual({})
+    })
+  })
+
+})
--- a/test/unit/core/plugins/samples/fn.js
+++ b/test/unit/core/plugins/samples/fn.js
--- a/test/unit/core/plugins/spec/actions.js
+++ b/test/unit/core/plugins/spec/actions.js
@@ -0,0 +1,229 @@
+
+import { fromJS } from "immutable"
+import { execute, executeRequest, changeParamByIdentity, updateEmptyParamInclusion } from "corePlugins/spec/actions"
+
+describe("spec plugin - actions", function(){
+
+  describe("execute", function(){
+
+    xit("should collect a full request and call fn.executeRequest", function(){
+      // Given
+      const system = {
+        fn: {
+          fetch: 1
+        },
+        specActions: {
+          executeRequest: jest.fn()
+        },
+        specSelectors: {
+          spec: () => fromJS({spec: 1}),
+          parameterValues: () => fromJS({values: 2}),
+          contentTypeValues: () => fromJS({requestContentType: "one", responseContentType: "two"})
+        }
+      }
+
+      // When
+      let executeFn = execute({ path: "/one", method: "get"})
+      executeFn(system)
+
+      // Then
+      expect(system.specActions.executeRequest.calls[0][0]).toEqual({
+        fetch: 1,
+        method: "get",
+        pathName: "/one",
+        parameters: {
+          values: 2
+        },
+        requestContentType: "one",
+        responseContentType: "two",
+        spec: {
+          spec: 1
+        }
+      })
+    })
+
+    xit("should allow passing _extra_ properties to executeRequest", function(){
+
+      // Given
+      const system = {
+        fn: {},
+        specActions: {
+          executeRequest: jest.fn()
+        },
+        specSelectors: {
+          spec: () => fromJS({}),
+          parameterValues: () => fromJS({}),
+          contentTypeValues: () => fromJS({})
+        }
+      }
+
+      // When
+      let executeFn = execute({ hi: "hello" })
+      executeFn(system)
+
+      // Then
+      expect(system.specActions.executeRequest.calls[0][0]).toContain({hi: "hello"})
+    })
+
+  })
+
+  describe("executeRequest", function(){
+
+    xit("should call fn.execute with arg ", function(){
+
+      const system = {
+        fn: {
+          execute: jest.fn().mockImplementation(() => Promise.resolve({}))
+        },
+        specActions: {
+          setResponse: jest.fn()
+        }
+      }
+
+      // When
+      let executeFn = executeRequest({one: 1})
+      let res = executeFn(system)
+
+      // Then
+      expect(res).toBeInstanceOf(Promise)
+      expect(system.fn.execute.mock.calls.length).toEqual(1)
+      expect(system.fn.execute.mock.calls[0][0]).toEqual({
+        one: 1
+      })
+    })
+
+    it("should pass requestInterceptor/responseInterceptor to fn.execute", async () => {
+      // Given
+      let configs = {
+        requestInterceptor: jest.fn(),
+        responseInterceptor: jest.fn()
+      }
+      const system = {
+        fn: {
+          buildRequest: jest.fn(),
+          execute: jest.fn().mockImplementation(() => Promise.resolve({}))
+        },
+        specActions: {
+          executeRequest: jest.fn(),
+          setMutatedRequest: jest.fn(),
+          setRequest: jest.fn(),
+          setResponse: jest.fn()
+        },
+        specSelectors: {
+          spec: () => fromJS({}),
+          parameterValues: () => fromJS({}),
+          contentTypeValues: () => fromJS({}),
+          url: () => fromJS({}),
+          isOAS3: () => false
+        },
+        getConfigs: () => configs
+      }
+      // When
+      let executeFn = executeRequest({
+        pathName: "/one",
+        method: "GET",
+        operation: fromJS({operationId: "getOne"})
+      })
+      await executeFn(system)
+
+      // Then
+      expect(system.fn.execute.mock.calls.length).toEqual(1)
+      expect(Object.keys(system.fn.execute.mock.calls[0][0])).toContain("requestInterceptor")
+      expect(system.fn.execute.mock.calls[0][0]).toEqual(expect.objectContaining({
+        responseInterceptor: configs.responseInterceptor
+      }))
+      expect(system.specActions.setMutatedRequest.mock.calls.length).toEqual(0)
+      expect(system.specActions.setRequest.mock.calls.length).toEqual(1)
+
+
+      let wrappedRequestInterceptor = system.fn.execute.mock.calls[0][0].requestInterceptor
+      await wrappedRequestInterceptor(system.fn.execute.mock.calls[0][0])
+      expect(configs.requestInterceptor.mock.calls.length).toEqual(1)
+      expect(system.specActions.setMutatedRequest.mock.calls.length).toEqual(1)
+      expect(system.specActions.setRequest.mock.calls.length).toEqual(1)
+    })
+  })
+
+  xit("should call specActions.setResponse, when fn.execute resolves", function(){
+
+    const response = {serverResponse: true}
+    const system = {
+      fn: {
+        execute: jest.fn().mockImplementation(() => Promise.resolve(response))
+      },
+      specActions: {
+        setResponse: jest.fn()
+      },
+      errActions: {
+        newSpecErr: jest.fn()
+      }
+    }
+
+    // When
+    let executeFn = executeRequest({
+      pathName: "/one",
+      method: "GET"
+    })
+    let executePromise = executeFn(system)
+
+    // Then
+    return executePromise.then( () => {
+      expect(system.specActions.setResponse.calls.length).toEqual(1)
+      expect(system.specActions.setResponse.calls[0].arguments).toEqual([
+        "/one",
+        "GET",
+        response
+      ])
+    })
+  })
+
+  describe.skip("requestResolvedSubtree", () => {
+    it("should return a promise ", function() {
+    })
+  })
+
+  it.skip("should call errActions.newErr, if the fn.execute rejects", function(){
+  })
+
+  describe("changeParamByIdentity", function () {
+    it("should map its arguments to a payload", function () {
+      const pathMethod = ["/one", "get"]
+      const param = fromJS({
+        name: "body",
+        in: "body"
+      })
+      const value = "my value"
+      const isXml = false
+
+      const result = changeParamByIdentity(pathMethod, param, value, isXml)
+
+      expect(result).toEqual({
+        type: "spec_update_param",
+        payload: {
+          path: pathMethod,
+          param,
+          value,
+          isXml
+        }
+      })
+    })
+  })
+
+  describe("updateEmptyParamInclusion", function () {
+    it("should map its arguments to a payload", function () {
+      const pathMethod = ["/one", "get"]
+
+      const result = updateEmptyParamInclusion(pathMethod, "param", "query", true)
+
+      expect(result).toEqual({
+        type: "spec_update_empty_param_inclusion",
+        payload: {
+          pathMethod,
+          paramName: "param",
+          paramIn: "query",
+          includeEmptyValue: true
+        }
+      })
+    })
+  })
+})
--- a/test/unit/core/plugins/spec/assets/petstore.json
+++ b/test/unit/core/plugins/spec/assets/petstore.json
--- a/test/unit/core/plugins/spec/reducer.js
+++ b/test/unit/core/plugins/spec/reducer.js
@@ -0,0 +1,202 @@
+
+import { fromJS } from "immutable"
+import reducer from "corePlugins/spec/reducers"
+
+describe("spec plugin - reducer", function(){
+
+  describe("update operation meta value", function() {
+    it("should update the operation metadata at the specified key", () => {
+      const updateOperationValue = reducer["spec_update_operation_meta_value"]
+
+      const state = fromJS({
+        resolved: {
+          "paths": {
+            "/pet": {
+              "post": {
+                "description": "my operation"
+              }
+            }
+          }
+        }
+      })
+
+      let result = updateOperationValue(state, {
+        payload: {
+          path: ["/pet", "post"],
+          value: "application/json",
+          key: "consumes_value"
+        }
+      })
+
+      let expectedResult = {
+        resolved: {
+          "paths": {
+            "/pet": {
+              "post": {
+                "description": "my operation"
+              }
+            }
+          }
+        },
+        meta: {
+          paths: {
+            "/pet": {
+              post: {
+                "consumes_value": "application/json"
+              }
+            }
+          }
+        }
+      }
+
+      expect(result.toJS()).toEqual(expectedResult)
+    })
+
+    it("shouldn't throw an error if we try to update the consumes_value of a null operation", () => {
+      const updateOperationValue = reducer["spec_update_operation_meta_value"]
+
+      const state = fromJS({
+        resolved: {
+          "paths": {
+            "/pet": {
+              "post": null
+            }
+          }
+        }
+      })
+
+      let result = updateOperationValue(state, {
+        payload: {
+          path: ["/pet", "post"],
+          value: "application/json",
+          key: "consumes_value"
+        }
+      })
+
+      expect(result.toJS()).toEqual(state.toJS())
+    })
+  })
+
+  describe("set response value", function() {
+    it("should combine the response and error objects", () => {
+      const setResponse = reducer["spec_set_response"]
+
+      const path = "/pet/post"
+      const method = "POST"
+
+      const state = fromJS({})
+      const result = setResponse(state, {
+        payload: {
+          path: path,
+          method: method,
+          res: {
+            error: true,
+            err: {
+              message: "Not Found",
+              name: "Error",
+              response: {
+                data: "response data",
+                headers: {
+                  key: "value"
+                },
+                ok: false,
+                status: 404,
+                statusText: "Not Found"
+              },
+              status: 404,
+              statusCode: 404
+            }
+          }
+        }
+      })
+
+      let expectedResult = {
+        error: true,
+        message: "Not Found",
+        name: "Error",
+        data: "response data",
+        headers: {
+          key: "value"
+        },
+        ok: false,
+        status: 404,
+        statusCode: 404,
+        statusText: "Not Found"
+      }
+
+      const response = result.getIn(["responses", path, method]).toJS()
+      expect(response).toEqual(expectedResult)
+    })
+  })
+  describe("SPEC_UPDATE_PARAM", function() {
+    it("should store parameter values by {in}.{name}", () => {
+      const updateParam = reducer["spec_update_param"]
+
+      const path = "/pet/post"
+      const method = "POST"
+
+      const state = fromJS({})
+      const result = updateParam(state, {
+        payload: {
+          path: [path, method],
+          paramName: "myBody",
+          paramIn: "body",
+          value: `{ "a": 123 }`,
+          isXml: false
+        }
+      })
+
+      const response = result.getIn(["meta", "paths", path, method, "parameters", "body.myBody", "value"])
+      expect(response).toEqual(`{ "a": 123 }`)
+    })
+    it("should store parameter values by identity", () => {
+      const updateParam = reducer["spec_update_param"]
+
+      const path = "/pet/post"
+      const method = "POST"
+
+      const param = fromJS({
+        name: "myBody",
+        in: "body",
+        schema: {
+          type: "string"
+        }
+      })
+
+      const state = fromJS({})
+      const result = updateParam(state, {
+        payload: {
+          param,
+          path: [path, method],
+          value: `{ "a": 123 }`,
+          isXml: false
+        }
+      })
+
+      const value = result.getIn(["meta", "paths", path, method, "parameters", `body.myBody.hash-${param.hashCode()}`, "value"])
+      expect(value).toEqual(`{ "a": 123 }`)
+    })
+  })
+  describe("SPEC_UPDATE_EMPTY_PARAM_INCLUSION", function() {
+    it("should store parameter values by {in}.{name}", () => {
+      const updateParam = reducer["spec_update_empty_param_inclusion"]
+
+      const path = "/pet/post"
+      const method = "POST"
+
+      const state = fromJS({})
+
+      const result = updateParam(state, {
+        payload: {
+          pathMethod: [path, method],
+          paramName: "param",
+          paramIn: "query",
+          includeEmptyValue: true
+        }
+      })
+
+      const response = result.getIn(["meta", "paths", path, method, "parameter_inclusions", "query.param"])
+      expect(response).toEqual(true)
+    })
+  })
+})
--- a/test/unit/core/plugins/spec/selectors.js
+++ b/test/unit/core/plugins/spec/selectors.js
--- a/test/unit/core/plugins/swagger-js/withCredentials.js
+++ b/test/unit/core/plugins/swagger-js/withCredentials.js
@@ -0,0 +1,93 @@
+import { loaded } from "corePlugins/swagger-js/configs-wrap-actions"
+
+describe("swagger-js plugin - withCredentials", () => {
+  it("should have no effect by default", () => {
+    const system = {
+      fn: {
+        fetch: jest.fn().mockImplementation(() => Promise.resolve())
+      },
+      getConfigs: () => ({})
+    }
+    const oriExecute = jest.fn()
+
+    const loadedFn = loaded(oriExecute, system)
+    loadedFn()
+
+    expect(oriExecute.mock.calls.length).toBe(1)
+    expect(system.fn.fetch.withCredentials).toBe(undefined)
+  })
+
+  it("should allow setting flag to true via config", () => {
+    const system = {
+      fn: {
+        fetch: jest.fn().mockImplementation(() => Promise.resolve())
+      },
+      getConfigs: () => ({
+        withCredentials: true
+      })
+    }
+    const oriExecute = jest.fn()
+
+    const loadedFn = loaded(oriExecute, system)
+    loadedFn()
+
+    expect(oriExecute.mock.calls.length).toBe(1)
+    expect(system.fn.fetch.withCredentials).toBe(true)
+  })
+  
+  it("should allow setting flag to false via config", () => {
+    const system = {
+      fn: {
+        fetch: jest.fn().mockImplementation(() => Promise.resolve())
+      },
+      getConfigs: () => ({
+        withCredentials: false
+      })
+    }
+    const oriExecute = jest.fn()
+
+    const loadedFn = loaded(oriExecute, system)
+    loadedFn()
+
+    expect(oriExecute.mock.calls.length).toBe(1)
+    expect(system.fn.fetch.withCredentials).toBe(false)
+  })
+  
+   it("should allow setting flag to true via config as string", () => {
+    // for query string config
+    const system = {
+      fn: {
+        fetch: jest.fn().mockImplementation(() => Promise.resolve())
+      },
+      getConfigs: () => ({
+        withCredentials: "true"
+      })
+    }
+    const oriExecute = jest.fn()
+
+    const loadedFn = loaded(oriExecute, system)
+    loadedFn()
+
+    expect(oriExecute.mock.calls.length).toBe(1)
+    expect(system.fn.fetch.withCredentials).toBe(true)
+  })
+  
+  it("should allow setting flag to false via config as string", () => {
+    // for query string config
+    const system = {
+      fn: {
+        fetch: jest.fn().mockImplementation(() => Promise.resolve())
+      },
+      getConfigs: () => ({
+        withCredentials: "false"
+      })
+    }
+    const oriExecute = jest.fn()
+
+    const loadedFn = loaded(oriExecute, system)
+    loadedFn()
+
+    expect(oriExecute.mock.calls.length).toBe(1)
+    expect(system.fn.fetch.withCredentials).toBe(false)
+  })
+})
--- a/test/unit/core/system/system.jsx
+++ b/test/unit/core/system/system.jsx
--- a/test/unit/core/system/wrapComponent.jsx
+++ b/test/unit/core/system/wrapComponent.jsx
@@ -0,0 +1,247 @@
+import React from "react"
+
+import { render } from "enzyme"
+import System from "core/system"
+
+describe("wrapComponents", () => {
+  describe("should wrap a component and provide a reference to the original", () => {
+    it("with stateless components", function(){
+      // Given
+      const system = new System({
+        plugins: [
+          {
+            components: {
+              wow: ({ name }) => <div>{name} component</div>
+            }
+          },
+          {
+            wrapComponents: {
+              wow: (OriginalComponent) => (props) => {
+                return <container>
+                  <OriginalComponent {...props}></OriginalComponent>
+                  <OriginalComponent name="Wrapped"></OriginalComponent>
+                </container>
+              }
+            }
+          }
+        ]
+      })
+
+      // When
+      let Component = system.getSystem().getComponents("wow")
+      const wrapper = render(<Component name="Normal" />)
+
+      const container = wrapper.children().first()
+      expect(container[0].name).toEqual("container")
+
+      const children = container.children()
+      expect(children.length).toEqual(2)
+      expect(children.eq(0).text()).toEqual("Normal component")
+      expect(children.eq(1).text()).toEqual("Wrapped component")
+    })
+
+    it("with React classes", function(){
+      class MyComponent extends React.Component {
+        render() {
+          return <div>{this.props.name} component</div>
+        }
+      }
+
+      // Given
+      const system = new System({
+        plugins: [
+          {
+            components: {
+              wow: MyComponent
+            }
+          },
+          {
+            wrapComponents: {
+              wow: (OriginalComponent) => {
+                return class WrapperComponent extends React.Component {
+                  render() {
+                    return <container>
+                      <OriginalComponent {...this.props}></OriginalComponent>
+                      <OriginalComponent name="Wrapped"></OriginalComponent>
+                    </container>
+                  }
+                }
+              }
+            }
+          }
+        ]
+      })
+
+      // When
+      let Component = system.getSystem().getComponents("wow")
+      const wrapper = render(<Component name="Normal" />)
+
+      const container = wrapper.children().first()
+      expect(container[0].name).toEqual("container")
+
+      const children = container.children()
+      expect(children.length).toEqual(2)
+      expect(children.eq(0).text()).toEqual("Normal component")
+      expect(children.eq(1).text()).toEqual("Wrapped component")
+    })
+  })
+
+  it("should provide a reference to the system to the wrapper", function(){
+
+    // Given
+
+    const mySystem = new System({
+      plugins: [
+        {
+          // Make a selector
+          statePlugins: {
+            doge: {
+              selectors: {
+                wow: () => () => {
+                  return "WOW much data"
+                }
+              }
+            }
+          }
+        },
+        {
+          // Create a component
+          components: {
+            wow: () => <div>Original component</div>
+          }
+        },
+        {
+          // Wrap the component and use the system
+          wrapComponents: {
+            wow: (OriginalComponent, system) => (props) => {
+              return <container>
+                <OriginalComponent {...props}></OriginalComponent>
+                <div>{system.dogeSelectors.wow()}</div>
+              </container>
+            }
+          }
+        }
+      ]
+    })
+
+    // Then
+    let Component = mySystem.getSystem().getComponents("wow")
+    const wrapper = render(<Component name="Normal" />)
+
+    const container = wrapper.children().first()
+    expect(container[0].name).toEqual("container")
+
+    const children = container.children()
+    expect(children.length).toEqual(2)
+    expect(children.eq(0).text()).toEqual("Original component")
+    expect(children.eq(1).text()).toEqual("WOW much data")
+  })
+
+  it("should wrap correctly when registering more plugins", function(){
+
+    // Given
+
+    const mySystem = new System({
+      plugins: [
+        () => {
+          return {
+            statePlugins: {
+              doge: {
+                selectors: {
+                  wow: () => () => {
+                    return "WOW much data"
+                  }
+                }
+              }
+            },
+            components: {
+              wow: () => <div>Original component</div>
+            }
+          }
+        }
+      ]
+    })
+
+    mySystem.register([
+      function() {
+        return {
+          // Wrap the component and use the system
+          wrapComponents: {
+            wow: (OriginalComponent, system) => (props) => {
+              return <container>
+                <OriginalComponent {...props}></OriginalComponent>
+                <div>{system.dogeSelectors.wow()}</div>
+              </container>
+            }
+          }
+        }
+      }
+    ])
+
+    // Then
+    let Component = mySystem.getSystem().getComponents("wow")
+    const wrapper = render(<Component name="Normal" />)
+
+    const container = wrapper.children().first()
+    expect(container[0].name).toEqual("container")
+
+    const children = container.children()
+    expect(children.length).toEqual(2)
+    expect(children.eq(0).text()).toEqual("Original component")
+    expect(children.eq(1).text()).toEqual("WOW much data")
+  })
+
+  it("should wrap correctly when building a system twice", function(){
+
+    // Given
+
+    const pluginOne = {
+      statePlugins: {
+        doge: {
+          selectors: {
+            wow: () => () => {
+              return "WOW much data"
+            }
+          }
+        }
+      },
+      components: {
+        wow: () => <div>Original component</div>
+      }
+    }
+
+    const pluginTwo = {
+      // Wrap the component and use the system
+      wrapComponents: {
+        wow: (OriginalComponent, system) => (props) => {
+          return <container>
+            <OriginalComponent {...props}></OriginalComponent>
+            <div>{system.dogeSelectors.wow()}</div>
+          </container>
+        }
+      }
+    }
+
+    const bothPlugins = () => [pluginOne, pluginTwo]
+
+    new System({
+      plugins: bothPlugins
+    })
+
+    const secondSystem = new System({
+      plugins: bothPlugins
+    })
+
+    // Then
+    let Component = secondSystem.getSystem().getComponents("wow")
+    const wrapper = render(<Component name="Normal" />)
+
+    const container = wrapper.children().first()
+    expect(container[0].name).toEqual("container")
+
+    const children = container.children()
+    expect(children.length).toEqual(2)
+    expect(children.eq(0).text()).toEqual("Original component")
+    expect(children.eq(1).text()).toEqual("WOW much data")
+  })
+})
--- a/test/unit/core/utils.js
+++ b/test/unit/core/utils.js