fix: streamline management of user-selected produces and consumes values (#4137)

* Remove produces/consumes setter from OperationContainer

* Store consumes/produces information in `meta` key

* Migrate produces value state usage to `meta` key

* use meta consumes data for isXml check

* Fix failing tests

* normalize action name casing

* restore correct produces fallback value logic

test/core/plugins/spec/reducer.js

@@ -0,0 +1,132 @@
+/* eslint-env mocha */
+import expect from "expect"
+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)
+    })
+  })
+})