95 lines
2.6 KiB
TypeScript
95 lines
2.6 KiB
TypeScript
import '@testing-library/jest-dom/vitest';
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import { cleanup, findByText, render, screen } from '@testing-library/react';
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import userEvent from '@testing-library/user-event';
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import {
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mockFetchDataStream,
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mockFetchDataStreamWithGenerator,
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mockFetchError,
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} from '../tests/utils/mock-fetch';
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import { useCompletion } from './use-completion';
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const TestComponent = () => {
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const {
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completion,
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handleSubmit,
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error,
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handleInputChange,
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input,
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isLoading,
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} = useCompletion();
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return (
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<div>
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<div data-testid="loading">{isLoading.toString()}</div>
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<div data-testid="error">{error?.toString()}</div>
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<div data-testid="completion">{completion}</div>
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<form onSubmit={handleSubmit}>
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<input
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data-testid="input"
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value={input}
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placeholder="Say something..."
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onChange={handleInputChange}
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/>
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</form>
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</div>
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);
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};
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beforeEach(() => {
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render(<TestComponent />);
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});
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afterEach(() => {
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vi.restoreAllMocks();
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cleanup();
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});
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it('should render complex text stream', async () => {
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mockFetchDataStream({
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url: 'https://example.com/api/completion',
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chunks: ['0:"Hello"\n', '0:","\n', '0:" world"\n', '0:"."\n'],
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});
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await userEvent.type(screen.getByTestId('input'), 'hi{enter}');
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await screen.findByTestId('completion');
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expect(screen.getByTestId('completion')).toHaveTextContent('Hello, world.');
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});
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describe('loading state', () => {
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it('should show loading state', async () => {
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let finishGeneration: ((value?: unknown) => void) | undefined;
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const finishGenerationPromise = new Promise(resolve => {
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finishGeneration = resolve;
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});
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mockFetchDataStreamWithGenerator({
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url: 'https://example.com/api/chat',
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chunkGenerator: (async function* generate() {
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const encoder = new TextEncoder();
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yield encoder.encode('0:"Hello"\n');
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await finishGenerationPromise;
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})(),
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});
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await userEvent.type(screen.getByTestId('input'), 'hi{enter}');
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await screen.findByTestId('loading');
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expect(screen.getByTestId('loading')).toHaveTextContent('true');
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finishGeneration?.();
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await findByText(await screen.findByTestId('loading'), 'false');
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expect(screen.getByTestId('loading')).toHaveTextContent('false');
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});
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it('should reset loading state on error', async () => {
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mockFetchError({ statusCode: 404, errorMessage: 'Not found' });
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await userEvent.type(screen.getByTestId('input'), 'hi{enter}');
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await screen.findByTestId('loading');
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expect(screen.getByTestId('loading')).toHaveTextContent('false');
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});
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});
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