dial-testing

name: dial-testing description: Reference for testing ai-dial-chat - Vitest + @testing-library/react unit tests (Arrange/Act/Assert, vi.mock + vi.hoisted), Playwright e2e with dial fixtures and page objects, test locations, and run commands. Use when writing or fixing unit or e2e tests, setting up mocks, or running the test suites. metadata: author: ai-dial-chat version: "1.0"

The full testing guide lives at .claude/guides/testing-patterns.md. Read it for the complete reference, then apply the patterns below.

When this applies

• Writing or fixing unit tests (Vitest) or e2e tests (Playwright)
• Setting up mocks, fixtures, or page objects
• Running the test suites

Unit tests (Vitest)

• Co-locate in apps/chat/src/[feature]/__tests__/*.test.ts(x).
• Follow Arrange / Act / Assert with comments.
• Name tests it('should ...').
• Mock with vi.mock(); wrap mock factories in vi.hoisted() so they hoist before module evaluation.

import { describe, expect, it } from 'vitest';
import { render, screen } from '@testing-library/react';

describe('ErrorMessageDiv', () => {
  it('should render the error message', () => {
    // Arrange
    render(<ErrorMessageDiv error={error} />);
    // Act
    const title = screen.getByText(error.title);
    // Assert
    expect(title).toBeInTheDocument();
  });
});

E2E tests (Playwright)

• Place in apps/chat-e2e/src/tests/[feature].test.ts.
• Import the fixture: import { dialTest as test } from '@/src/core/dialFixtures'.
• Use page objects from apps/chat-e2e/src/ui/ and builders from testData/.

Commands

See .claude/guides/testing-patterns.md for mocking tables, fixtures, setup, and troubleshooting.