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

test/unit/components/parameter-row.jsx

@@ -0,0 +1,86 @@
+import React from "react"
+import { fromJS } from "immutable"
+import { render } from "enzyme"
+import ParameterRow from "components/parameter-row"
+
+describe("<ParameterRow/>", () => {
+  const createProps = ({ param, isOAS3 }) => ({
+    getComponent: () => "div",
+    specSelectors: {
+      parameterWithMetaByIdentity: () => param,
+      isOAS3: () => isOAS3,
+      isSwagger2: () => !isOAS3
+    },
+    oas3Selectors: { activeExamplesMember: () => {} },
+    param,
+    rawParam: param,
+    pathMethod: [],
+    getConfigs: () => ({})
+  })
+
+  it("Can render Swagger 2 parameter type with format", () => {
+    const param = fromJS({
+      name: "petUuid",
+      in: "path",
+      description: "UUID that identifies a pet",
+      type: "string",
+      format: "uuid"
+    })
+
+    const props = createProps({ param, isOAS3: false })
+    const wrapper = render(<ParameterRow {...props}/>)
+
+    expect(wrapper.find(".parameter__type").length).toEqual(1)
+    expect(wrapper.find(".parameter__type").text()).toEqual("string($uuid)")
+  })
+
+  it("Can render Swagger 2 parameter type without format", () => {
+    const param = fromJS({
+      name: "petId",
+      in: "path",
+      description: "ID that identifies a pet",
+      type: "string"
+    })
+
+    const props = createProps({ param, isOAS3: false })
+    const wrapper = render(<ParameterRow {...props}/>)
+
+    expect(wrapper.find(".parameter__type").length).toEqual(1)
+    expect(wrapper.find(".parameter__type").text()).toEqual("string")
+  })
+
+  it("Can render OAS3 parameter type with format", () => {
+    const param = fromJS({
+      name: "petUuid",
+      in: "path",
+      description: "UUID that identifies a pet",
+      schema: {
+        type: "string",
+        format: "uuid"
+      }
+    })
+
+    const props = createProps({ param, isOAS3: true })
+    const wrapper = render(<ParameterRow {...props}/>)
+
+    expect(wrapper.find(".parameter__type").length).toEqual(1)
+    expect(wrapper.find(".parameter__type").text()).toEqual("string($uuid)")
+  })
+
+  it("Can render OAS3 parameter type without format", () => {
+    const param = fromJS({
+      name: "petId",
+      in: "path",
+      description: "ID that identifies a pet",
+      schema: {
+        type: "string"
+      }
+    })
+
+    const props = createProps({ param, isOAS3: true })
+    const wrapper = render(<ParameterRow {...props}/>)
+
+    expect(wrapper.find(".parameter__type").length).toEqual(1)
+    expect(wrapper.find(".parameter__type").text()).toEqual("string")
+  })
+})