created tests for components related to importing from source

web/src/components/helper/__tests__/AnswerSourceForm.test.js

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+import React from 'react';
+import { shallow, mount } from 'enzyme';
+import AnswerSourceForm from '../AnswerSourceForm';
+import {ANSWER_TYPE} from '../../../config/constants'
+
+it('renders without crashing', () => {
+  shallow(<AnswerSourceForm onClose={()=>{}} onSave={()=>{}} onSourceChange={()=>{}} />);
+});
+
+it('calls onClose when cancel is pressed', () => {
+  const onClose = jest.fn();
+  const wrapper = mount(<AnswerSourceForm onClose={onClose} onSave={()=>{}} onSourceChange={()=>{}} />);
+  const cancelButton = wrapper.find('button').at(0);
+  expect(cancelButton.text()).toEqual('Cancel');
+  cancelButton.simulate('click');
+  expect(onClose).toBeCalled();
+});
+
+it('calls onSave when save is pressed', () => {
+  const onSave = jest.fn();
+  const wrapper = mount(<AnswerSourceForm onClose={()=>{}} onSave={onSave} onSourceChange={()=>{}} />);
+  const saveButton = wrapper.find('button').at(1);
+  expect(saveButton.text()).toEqual('Save');
+  saveButton.simulate('click');
+  expect(onSave).toBeCalled();
+});
+
+it('sets PREDEFINED value when Predefined answer is selected', () => {
+  let selectedValue = null;
+
+  const wrapper = mount(<AnswerSourceForm 
+    onClose={()=>{}} 
+    onSave={()=>{}} 
+    onSourceChange={(value)=>{selectedValue=value}} />);
+
+  const optionControl = wrapper.find('SelectionControlGroup');
+  expect(optionControl.exists()).toEqual(true);
+  optionControl.simulate('change',{target:{value:String(ANSWER_TYPE.PREDEFINED)}});
+  expect(selectedValue).toBe(String(ANSWER_TYPE.PREDEFINED));
+  
+});
+
+it('sets EXTERNAL_SOURCE_WP_TITLES value when WordPress titles is selected', () => {
+  let selectedValue = null;
+
+  const wrapper = mount(<AnswerSourceForm 
+    onClose={()=>{}} 
+    onSave={()=>{}} 
+    onSourceChange={(value)=>{selectedValue=value}} />);
+
+  const optionControl = wrapper.find('SelectionControlGroup');
+  expect(optionControl.exists()).toEqual(true);
+  optionControl.simulate('change',{target:{value:String(ANSWER_TYPE.EXTERNAL_SOURCE_WP_TITLES)}});
+  expect(selectedValue).toBe(String(ANSWER_TYPE.EXTERNAL_SOURCE_WP_TITLES));
+  
+});
+
+it('sets EXTERNAL_SOURCE_WP_NEWS value when WordPress latest news is selected', () => {
+  let selectedValue = null;
+
+  const wrapper = mount(<AnswerSourceForm 
+    onClose={()=>{}} 
+    onSave={()=>{}} 
+    onSourceChange={(value)=>{selectedValue=value}} />);
+
+  const optionControl = wrapper.find('SelectionControlGroup');
+  expect(optionControl.exists()).toEqual(true);
+  optionControl.simulate('change',{target:{value:String(ANSWER_TYPE.EXTERNAL_SOURCE_WP_NEWS)}});
+  expect(selectedValue).toBe(String(ANSWER_TYPE.EXTERNAL_SOURCE_WP_NEWS));
+  
+});