Add jest setup and initial react tests

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
   build-lambda:
     uses: ./.github/workflows/build-link-index-updater-lambda.yml
 
-  lint:
+  npm:
     runs-on: ubuntu-latest
     defaults: 
       run: 
@@ -57,6 +57,12 @@ jobs:
 
       - name: Format
         run: npm run fmt:check
+
+      - name: Build
+        run: npm run build
+
+      - name: Test
+        run: npm run test
 
 
   build:

src/Elastic.Documentation.Site/Assets/web-components/SearchOrAskAi/AskAiAnswer.test.tsx

@@ -0,0 +1,257 @@
+import { AskAiAnswer } from './AskAiAnswer'
+import { LlmGatewayMessage, useLlmGateway } from './useLlmGateway'
+import { render, screen } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
+import * as React from 'react'
+import { act } from 'react'
+
+const mockUseLlmGateway = jest.mocked(useLlmGateway)
+
+const mockSendQuestion = jest.fn(() => Promise.resolve())
+const mockRetry = jest.fn()
+const mockAbort = jest.fn()
+
+jest.mock('./search.store', () => ({
+    useAskAiTerm: jest.fn(() => 'What is Elasticsearch?'),
+}))
+
+jest.mock('./useLlmGateway', () => ({
+    useLlmGateway: jest.fn(() => ({
+        messages: [],
+        error: null,
+        abort: mockAbort,
+        retry: mockRetry,
+        sendQuestion: mockSendQuestion,
+    })),
+}))
+
+// Mock uuid
+jest.mock('uuid', () => ({
+    v4: jest.fn(() => 'mock-uuid-123'),
+}))
+
+describe('AskAiAnswer Component', () => {
+    beforeEach(() => {
+        jest.clearAllMocks()
+    })
+
+    describe('Initial Loading State', () => {
+        test('should show loading spinner when no messages are present', () => {
+            // Arrange
+            mockUseLlmGateway.mockReturnValue({
+                messages: [],
+                error: null,
+                retry: mockRetry,
+                sendQuestion: mockSendQuestion,
+                abort: mockAbort,
+            })
+
+            // Act
+            render(<AskAiAnswer />)
+
+            // Assert
+            const loadingSpinner = screen.getByRole('progressbar')
+            expect(loadingSpinner).toBeInTheDocument()
+            expect(screen.getByText('Generating...')).toBeInTheDocument()
+        })
+    })
+
+    describe('Message Display', () => {
+        test('should display AI message content correctly', () => {
+            // Arrange
+            const mockMessages: LlmGatewayMessage[] = [
+                {
+                    id: 'some-id-1',
+                    timestamp: 0,
+                    type: 'ai_message',
+                    data: {
+                        content:
+                            'Elasticsearch is a distributed search engine...',
+                    },
+                },
+                {
+                    id: 'some-id-2',
+                    timestamp: 0,
+                    type: 'ai_message_chunk',
+                    data: {
+                        content: ' It provides real-time search capabilities.',
+                    },
+                },
+            ]
+
+            mockUseLlmGateway.mockReturnValue({
+                messages: mockMessages,
+                error: null,
+                retry: mockRetry,
+                sendQuestion: mockSendQuestion,
+                abort: mockAbort,
+            })
+
+            // Act
+            render(<AskAiAnswer />)
+
+            // Assert
+            const expectedContent =
+                'Elasticsearch is a distributed search engine... It provides real-time search capabilities.'
+            expect(screen.getByText(expectedContent)).toBeInTheDocument()
+        })
+    })
+
+    describe('Error State', () => {
+        test('should display error message when there is an error', () => {
+            // Arrange
+            mockUseLlmGateway.mockReturnValue({
+                messages: [],
+                error: new Error('Network error'),
+                retry: mockRetry,
+                sendQuestion: mockSendQuestion,
+                abort: mockAbort,
+            })
+
+            // Act
+            render(<AskAiAnswer />)
+
+            // Assert
+            expect(
+                screen.getByText('Sorry, there was an error')
+            ).toBeInTheDocument()
+            expect(
+                screen.getByText(
+                    'The Elastic Docs AI Assistant encountered an error. Please try again.'
+                )
+            ).toBeInTheDocument()
+        })
+    })
+
+    describe('Finished State with Feedback Buttons', () => {
+        test('should show feedback buttons when answer is finished', () => {
+            // Arrange
+            let onMessageCallback: (
+                message: LlmGatewayMessage
+            ) => void = () => {}
+
+            const mockMessages: LlmGatewayMessage[] = [
+                {
+                    id: 'some-id-1',
+                    timestamp: 1,
+                    type: 'ai_message',
+                    data: {
+                        content: 'Here is your answer about Elasticsearch.',
+                    },
+                },
+            ]
+
+            mockUseLlmGateway.mockImplementation(({ onMessage }) => {
+                onMessageCallback = onMessage!
+                return {
+                    messages: mockMessages,
+                    error: null,
+                    retry: mockRetry,
+                    sendQuestion: mockSendQuestion,
+                    abort: mockAbort,
+                }
+            })
+
+            // Act
+            render(<AskAiAnswer />)
+
+            // Simulate the component receiving an 'agent_end' message to finish loading
+            act(() => {
+                onMessageCallback({
+                    type: 'agent_end',
+                    id: 'some-id',
+                    timestamp: 12345,
+                    data: {},
+                })
+            })
+
+            // Assert
+            expect(
+                screen.getByLabelText('This answer was helpful')
+            ).toBeInTheDocument()
+            expect(
+                screen.getByLabelText('This answer was not helpful')
+            ).toBeInTheDocument()
+            expect(
+                screen.getByLabelText('Request a new answer')
+            ).toBeInTheDocument()
+        })
+
+        test('should call retry function when refresh button is clicked', async () => {
+            // Arrange
+            const user = userEvent.setup()
+            let onMessageCallback: (
+                message: LlmGatewayMessage
+            ) => void = () => {}
+
+            const mockMessages: LlmGatewayMessage[] = [
+                {
+                    id: 'some-id-1',
+                    timestamp: 12345,
+                    type: 'ai_message',
+                    data: { content: 'Here is your answer.' },
+                },
+            ]
+
+            mockUseLlmGateway.mockImplementation(({ onMessage }) => {
+                onMessageCallback = onMessage!
+                return {
+                    messages: mockMessages,
+                    error: null,
+                    retry: mockRetry,
+                    sendQuestion: mockSendQuestion,
+                    abort: mockAbort,
+                }
+            })
+
+            render(<AskAiAnswer />)
+
+            // Simulate finished state
+            act(() => {
+                onMessageCallback({
+                    type: 'agent_start',
+                    id: 'some-id',
+                    timestamp: 12345,
+                    data: { input: {}, thread: {} },
+                })
+                onMessageCallback({
+                    type: 'agent_end',
+                    id: 'some-id',
+                    timestamp: 12346,
+                    data: {},
+                })
+            })
+
+            // Act
+            const refreshButton = screen.getByLabelText('Request a new answer')
+
+            await act(async () => {
+                await user.click(refreshButton)
+            })
+
+            // Assert
+            expect(mockRetry).toHaveBeenCalledTimes(1)
+        })
+    })
+
+    describe('Question Sending', () => {
+        test('should send question on component mount', () => {
+            // Arrange
+            mockUseLlmGateway.mockReturnValue({
+                messages: [],
+                error: null,
+                retry: mockRetry,
+                sendQuestion: mockSendQuestion,
+                abort: mockAbort,
+            })
+
+            // Act
+            render(<AskAiAnswer />)
+
+            // Assert
+            expect(mockSendQuestion).toHaveBeenCalledWith(
+                'What is Elasticsearch?'
+            )
+        })
+    })
+})

src/Elastic.Documentation.Site/jest.config.js

@@ -0,0 +1,27 @@
+module.exports = {
+  testEnvironment: 'jsdom',
+  setupFilesAfterEnv: ['<rootDir>/setupTests.ts'],
+  transform: {
+    '^.+\\.(ts|tsx)$': [
+      'babel-jest',
+      {
+        presets: [
+          ['@babel/preset-env', { targets: { node: 'current' } }],
+          ['@babel/preset-react', { runtime: 'automatic' }],
+          '@babel/preset-typescript',
+        ],
+      },
+    ],
+    '^.+\\.(js|jsx)$': [
+      'babel-jest',
+      {
+        presets: [
+          ['@babel/preset-env', { targets: { node: 'current' } }],
+          ['@babel/preset-react', { runtime: 'automatic' }],
+        ],
+      },
+    ],
+  },
+  transformIgnorePatterns: [],
+  reporters: [['github-actions', { silent: false }], 'summary'],
+}