test(web): Heading

web/src/components/__tests__/Heading.test.jsx

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+import { h } from 'preact';
+import Heading from '../Heading';
+import { render, screen } from '@testing-library/preact';
+
+describe('Heading', () => {
+  test('renders content with default size', async () => {
+    render(<Heading>Hello</Heading>);
+    expect(screen.queryByText('Hello')).toBeInTheDocument();
+    expect(screen.queryByText('Hello').classList.contains('text-2xl')).toBe(true);
+  });
+
+  test('renders with custom size', async () => {
+    render(<Heading size="lg">Hello</Heading>);
+    expect(screen.queryByText('Hello')).toBeInTheDocument();
+    expect(screen.queryByText('Hello').classList.contains('text-2xl')).toBe(false);
+    expect(screen.queryByText('Hello').classList.contains('text-lg')).toBe(true);
+  });
+
+  test('renders with custom className', async () => {
+    render(<Heading className="tacos">Hello</Heading>);
+    expect(screen.queryByText('Hello')).toBeInTheDocument();
+    expect(screen.queryByText('Hello').classList.contains('text-2xl')).toBe(true);
+    expect(screen.queryByText('Hello').classList.contains('tacos')).toBe(true);
+  });
+});