From 8a6a6712e7554f110b5ef951f270d88fd010e040 Mon Sep 17 00:00:00 2001
From: Bertrand Yuan <noreply@bertyuan.com>
Date: Thu, 26 Mar 2026 00:02:16 +0800
Subject: add more tests

---
 src/components/active-link.test.tsx          | 57 ++++++++++++++++++++++++
 src/components/inline-link.test.tsx          | 41 +++++++++++++++++
 src/components/json-ld.test.tsx              | 66 ++++++++++++++++++++++++++++
 src/components/numbered-pagination.test.tsx  | 64 +++++++++++++++++++++++++++
 src/components/rich-text/node-format.test.ts | 40 +++++++++++++++++
 src/components/section.test.tsx              | 19 ++++++++
 src/components/tags/tag-card.test.tsx        | 36 +++++++++++++++
 src/components/tailwind-indicator.test.tsx   | 30 +++++++++++++
 src/components/theme-provider.test.tsx       | 23 ++++++++++
 src/components/ui/alert.test.tsx             | 30 +++++++++++++
 src/components/ui/button-variants.test.ts    | 28 ++++++++++++
 src/components/ui/card.test.tsx              | 40 +++++++++++++++++
 src/components/ui/input.test.tsx             | 22 ++++++++++
 src/components/ui/label.test.tsx             | 15 +++++++
 src/components/ui/pagination.test.tsx        | 61 +++++++++++++++++++++++++
 src/components/ui/skeleton.test.tsx          | 16 +++++++
 16 files changed, 588 insertions(+)
 create mode 100644 src/components/active-link.test.tsx
 create mode 100644 src/components/inline-link.test.tsx
 create mode 100644 src/components/json-ld.test.tsx
 create mode 100644 src/components/numbered-pagination.test.tsx
 create mode 100644 src/components/rich-text/node-format.test.ts
 create mode 100644 src/components/section.test.tsx
 create mode 100644 src/components/tags/tag-card.test.tsx
 create mode 100644 src/components/tailwind-indicator.test.tsx
 create mode 100644 src/components/theme-provider.test.tsx
 create mode 100644 src/components/ui/alert.test.tsx
 create mode 100644 src/components/ui/button-variants.test.ts
 create mode 100644 src/components/ui/card.test.tsx
 create mode 100644 src/components/ui/input.test.tsx
 create mode 100644 src/components/ui/label.test.tsx
 create mode 100644 src/components/ui/pagination.test.tsx
 create mode 100644 src/components/ui/skeleton.test.tsx

(limited to 'src/components')

diff --git a/src/components/active-link.test.tsx b/src/components/active-link.test.tsx
new file mode 100644
index 0000000..0c603cb
--- /dev/null
+++ b/src/components/active-link.test.tsx
@@ -0,0 +1,57 @@
+import { render, screen } from '@testing-library/react';
+import type { ReactNode } from 'react';
+import { describe, expect, test, vi } from 'vitest';
+import { ActiveLink } from './active-link';
+import { usePathname } from 'next/navigation';
+
+vi.mock('next/navigation', () => ({
+  usePathname: vi.fn(),
+}));
+
+vi.mock('next/link', () => ({
+  default: ({
+    href,
+    children,
+    ...props
+  }: {
+    href: string;
+    children: ReactNode;
+  }) => (
+    <a href={href} {...props}>
+      {children}
+    </a>
+  ),
+}));
+
+describe('ActiveLink', () => {
+  test('applies active styles when pathname matches href', () => {
+    vi.mocked(usePathname).mockReturnValue('/posts');
+
+    render(<ActiveLink href='/posts'>Posts</ActiveLink>);
+
+    const link = screen.getByRole('link', { name: 'Posts' });
+    expect(link).toHaveClass('font-medium');
+  });
+
+  test('does not apply active styles for non-matching paths', () => {
+    vi.mocked(usePathname).mockReturnValue('/tags');
+
+    render(<ActiveLink href='/posts'>Posts</ActiveLink>);
+
+    const link = screen.getByRole('link', { name: 'Posts' });
+    expect(link).not.toHaveClass('font-medium');
+  });
+
+  test('supports nested path matching when nested prop is enabled', () => {
+    vi.mocked(usePathname).mockReturnValue('/posts/testing-vitest');
+
+    render(
+      <ActiveLink href='/posts' nested>
+        Posts
+      </ActiveLink>,
+    );
+
+    const link = screen.getByRole('link', { name: 'Posts' });
+    expect(link).toHaveClass('font-medium');
+  });
+});
diff --git a/src/components/inline-link.test.tsx b/src/components/inline-link.test.tsx
new file mode 100644
index 0000000..ad9813d
--- /dev/null
+++ b/src/components/inline-link.test.tsx
@@ -0,0 +1,41 @@
+import { render, screen } from '@testing-library/react';
+import type { ReactNode } from 'react';
+import { describe, expect, test, vi } from 'vitest';
+import { InlineLink } from './inline-link';
+
+vi.mock('next/link', () => ({
+  default: ({
+    href,
+    children,
+    ...props
+  }: {
+    href: string;
+    children: ReactNode;
+  }) => (
+    <a href={href} {...props}>
+      {children}
+    </a>
+  ),
+}));
+
+describe('InlineLink', () => {
+  test('renders as a normal link by default', () => {
+    render(<InlineLink href='/posts'>Posts</InlineLink>);
+
+    const link = screen.getByRole('link', { name: 'Posts' });
+    expect(link).toHaveAttribute('href', '/posts');
+    expect(link).not.toHaveAttribute('target', '_blank');
+  });
+
+  test('sets target blank when blank prop is true', () => {
+    render(
+      <InlineLink href='https://example.com' blank>
+        External
+      </InlineLink>,
+    );
+
+    const link = screen.getByRole('link', { name: 'External' });
+    expect(link).toHaveAttribute('href', 'https://example.com');
+    expect(link).toHaveAttribute('target', '_blank');
+  });
+});
diff --git a/src/components/json-ld.test.tsx b/src/components/json-ld.test.tsx
new file mode 100644
index 0000000..c96e5c3
--- /dev/null
+++ b/src/components/json-ld.test.tsx
@@ -0,0 +1,66 @@
+import { render } from '@testing-library/react';
+import { describe, expect, test, vi } from 'vitest';
+
+vi.mock('@/app/(main)/layout.config', () => ({
+  title: 'Blog',
+  owner: 'Test Owner',
+}));
+
+vi.mock('@/lib/constants', () => ({
+  baseUrl: new URL('http://localhost:3000'),
+}));
+
+import { PostJsonLd, TagJsonLd } from './json-ld';
+
+describe('json-ld components', () => {
+  test('renders post json-ld with blog posting and breadcrumb graph', () => {
+    const { container } = render(
+      <PostJsonLd
+        post={{
+          id: 1,
+          title: 'Testing Post',
+          slug: 'testing-post',
+          url: '/posts/testing-post',
+          description: 'A post for tests',
+          content: null,
+          image: '/cover.png',
+          author: 'Alice',
+          tags: ['testing'],
+          date: new Date('2025-01-01T00:00:00.000Z'),
+          createdAt: new Date('2025-01-01T00:00:00.000Z'),
+          updatedAt: new Date('2025-01-02T00:00:00.000Z'),
+        }}
+      />,
+    );
+
+    const script = container.querySelector('script[type="application/ld+json"]');
+    expect(script).toBeInTheDocument();
+
+    const payload = JSON.parse(script?.innerHTML ?? '{}');
+    expect(payload['@context']).toBe('https://schema.org');
+    expect(payload['@graph']).toHaveLength(2);
+    expect(payload['@graph'][0]['@type']).toBe('BlogPosting');
+    expect(payload['@graph'][0].mainEntityOfPage['@id']).toBe(
+      'http://localhost:3000/posts/testing-post',
+    );
+  });
+
+  test('returns null when post is not provided', () => {
+    const { container } = render(<PostJsonLd post={null as unknown as any} />);
+    expect(container.firstChild).toBeNull();
+  });
+
+  test('renders tag json-ld with tag-specific breadcrumb item', () => {
+    const { container } = render(<TagJsonLd tag='nextjs' />);
+
+    const script = container.querySelector('script[type="application/ld+json"]');
+    expect(script).toBeInTheDocument();
+
+    const payload = JSON.parse(script?.innerHTML ?? '{}');
+    expect(payload['@graph']).toHaveLength(1);
+    expect(payload['@graph'][0]['@type']).toBe('BreadcrumbList');
+    expect(payload['@graph'][0].itemListElement[2].item).toBe(
+      'http://localhost:3000/tags/nextjs',
+    );
+  });
+});
diff --git a/src/components/numbered-pagination.test.tsx b/src/components/numbered-pagination.test.tsx
new file mode 100644
index 0000000..d99ab46
--- /dev/null
+++ b/src/components/numbered-pagination.test.tsx
@@ -0,0 +1,64 @@
+import { fireEvent, render, screen } from '@testing-library/react';
+import { describe, expect, test, vi } from 'vitest';
+import { NumberedPagination } from './numbered-pagination';
+
+describe('NumberedPagination', () => {
+  test('renders page controls and current page', () => {
+    render(
+      <NumberedPagination
+        currentPage={5}
+        totalPages={10}
+        paginationItemsToDisplay={5}
+        onPageChange={vi.fn()}
+      />,
+    );
+
+    expect(screen.getByRole('link', { name: 'Go to previous page' })).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: 'Go to next page' })).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: '5' })).toHaveAttribute('aria-current');
+    expect(screen.getAllByText('...')).toHaveLength(2);
+  });
+
+  test('calls onPageChange when selecting a valid page', () => {
+    const onPageChange = vi.fn();
+    render(
+      <NumberedPagination
+        currentPage={2}
+        totalPages={5}
+        paginationItemsToDisplay={5}
+        onPageChange={onPageChange}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole('link', { name: '3' }));
+    expect(onPageChange).toHaveBeenCalledWith(3);
+  });
+
+  test('does not call onPageChange for out-of-range previous/next actions', () => {
+    const onPageChange = vi.fn();
+    const { rerender } = render(
+      <NumberedPagination
+        currentPage={1}
+        totalPages={3}
+        paginationItemsToDisplay={5}
+        onPageChange={onPageChange}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole('link', { name: 'Go to previous page' }));
+    expect(onPageChange).not.toHaveBeenCalled();
+
+    rerender(
+      <NumberedPagination
+        currentPage={3}
+        totalPages={3}
+        paginationItemsToDisplay={5}
+        onPageChange={onPageChange}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole('link', { name: 'Go to next page' }));
+    expect(onPageChange).not.toHaveBeenCalled();
+  });
+});
+
diff --git a/src/components/rich-text/node-format.test.ts b/src/components/rich-text/node-format.test.ts
new file mode 100644
index 0000000..476a0d9
--- /dev/null
+++ b/src/components/rich-text/node-format.test.ts
@@ -0,0 +1,40 @@
+import { describe, expect, test } from 'vitest';
+import {
+  IS_BOLD,
+  IS_CODE,
+  IS_HIGHLIGHT,
+  IS_ITALIC,
+  IS_STRIKETHROUGH,
+  IS_SUBSCRIPT,
+  IS_SUPERSCRIPT,
+  IS_UNDERLINE,
+} from './node-format';
+
+describe('node format bit flags', () => {
+  test('uses power-of-two values for unique bitmasks', () => {
+    const flags = [
+      IS_BOLD,
+      IS_ITALIC,
+      IS_STRIKETHROUGH,
+      IS_UNDERLINE,
+      IS_CODE,
+      IS_SUBSCRIPT,
+      IS_SUPERSCRIPT,
+      IS_HIGHLIGHT,
+    ];
+
+    for (const flag of flags) {
+      expect((flag & (flag - 1)) === 0).toBe(true);
+    }
+  });
+
+  test('can combine and detect individual flags with bitwise operations', () => {
+    const format = IS_BOLD | IS_ITALIC | IS_CODE;
+
+    expect((format & IS_BOLD) !== 0).toBe(true);
+    expect((format & IS_ITALIC) !== 0).toBe(true);
+    expect((format & IS_CODE) !== 0).toBe(true);
+    expect((format & IS_UNDERLINE) !== 0).toBe(false);
+  });
+});
+
diff --git a/src/components/section.test.tsx b/src/components/section.test.tsx
new file mode 100644
index 0000000..18002ae
--- /dev/null
+++ b/src/components/section.test.tsx
@@ -0,0 +1,19 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import { Section } from './section';
+
+describe('Section', () => {
+  test('renders children and forwards section attributes', () => {
+    render(
+      <Section data-testid='section' sectionClassName='py-20' className='px-4'>
+        <div>Body</div>
+      </Section>,
+    );
+
+    const section = screen.getByTestId('section');
+    expect(section.tagName).toBe('SECTION');
+    expect(section.className).toContain('py-20');
+    expect(screen.getByText('Body')).toBeInTheDocument();
+  });
+});
+
diff --git a/src/components/tags/tag-card.test.tsx b/src/components/tags/tag-card.test.tsx
new file mode 100644
index 0000000..645441b
--- /dev/null
+++ b/src/components/tags/tag-card.test.tsx
@@ -0,0 +1,36 @@
+import { render, screen } from '@testing-library/react';
+import type { ReactNode } from 'react';
+import { describe, expect, test, vi } from 'vitest';
+import { TagCard } from './tag-card';
+
+vi.mock('next/link', () => ({
+  default: ({
+    href,
+    children,
+    ...props
+  }: {
+    href: string;
+    children: ReactNode;
+  }) => (
+    <a href={href} {...props}>
+      {children}
+    </a>
+  ),
+}));
+
+describe('TagCard', () => {
+  test('renders a tag link with computed tag url', () => {
+    render(<TagCard name='react' />);
+
+    const link = screen.getByRole('link', { name: /react/i });
+    expect(link).toHaveAttribute('href', '/tags/react');
+  });
+
+  test('renders count only when displayCount is true and count exists', () => {
+    const { rerender } = render(<TagCard name='nextjs' displayCount count={12} />);
+    expect(screen.getByText('(12)')).toBeInTheDocument();
+
+    rerender(<TagCard name='nextjs' count={12} />);
+    expect(screen.queryByText('(12)')).not.toBeInTheDocument();
+  });
+});
diff --git a/src/components/tailwind-indicator.test.tsx b/src/components/tailwind-indicator.test.tsx
new file mode 100644
index 0000000..4244ef6
--- /dev/null
+++ b/src/components/tailwind-indicator.test.tsx
@@ -0,0 +1,30 @@
+import { render, screen } from '@testing-library/react';
+import { afterAll, beforeEach, describe, expect, test } from 'vitest';
+import { TailwindIndicator } from './tailwind-indicator';
+
+const originalEnv = process.env;
+
+describe('TailwindIndicator', () => {
+  beforeEach(() => {
+    process.env = { ...originalEnv };
+  });
+
+  afterAll(() => {
+    process.env = originalEnv;
+  });
+
+  test('renders in non-production environments', () => {
+    process.env.NODE_ENV = 'test';
+    render(<TailwindIndicator />);
+
+    expect(screen.getByText('xs')).toBeInTheDocument();
+  });
+
+  test('returns null in production', () => {
+    process.env.NODE_ENV = 'production';
+    const { container } = render(<TailwindIndicator />);
+
+    expect(container.firstChild).toBeNull();
+  });
+});
+
diff --git a/src/components/theme-provider.test.tsx b/src/components/theme-provider.test.tsx
new file mode 100644
index 0000000..0ac54e1
--- /dev/null
+++ b/src/components/theme-provider.test.tsx
@@ -0,0 +1,23 @@
+import { render, screen } from '@testing-library/react';
+import type { ReactNode } from 'react';
+import { describe, expect, test, vi } from 'vitest';
+import { ThemeProvider } from './theme-provider';
+
+vi.mock('next-themes', () => ({
+  ThemeProvider: ({ children }: { children: ReactNode }) => (
+    <div data-testid='next-themes-provider'>{children}</div>
+  ),
+}));
+
+describe('ThemeProvider', () => {
+  test('renders children through next-themes provider', () => {
+    render(
+      <ThemeProvider attribute='class'>
+        <span>content</span>
+      </ThemeProvider>,
+    );
+
+    expect(screen.getByTestId('next-themes-provider')).toBeInTheDocument();
+    expect(screen.getByText('content')).toBeInTheDocument();
+  });
+});
diff --git a/src/components/ui/alert.test.tsx b/src/components/ui/alert.test.tsx
new file mode 100644
index 0000000..ded0356
--- /dev/null
+++ b/src/components/ui/alert.test.tsx
@@ -0,0 +1,30 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import { Alert, AlertDescription, AlertTitle } from './alert';
+
+describe('Alert', () => {
+  test('renders with role and slot attributes', () => {
+    render(
+      <Alert>
+        <AlertTitle>Heads up</AlertTitle>
+        <AlertDescription>Something happened.</AlertDescription>
+      </Alert>,
+    );
+
+    const alert = screen.getByRole('alert');
+    expect(alert).toHaveAttribute('data-slot', 'alert');
+    expect(screen.getByText('Heads up')).toHaveAttribute('data-slot', 'alert-title');
+    expect(screen.getByText('Something happened.')).toHaveAttribute(
+      'data-slot',
+      'alert-description',
+    );
+  });
+
+  test('applies destructive variant classes', () => {
+    render(<Alert variant='destructive'>Danger</Alert>);
+
+    const alert = screen.getByRole('alert');
+    expect(alert.className).toContain('text-destructive');
+  });
+});
+
diff --git a/src/components/ui/button-variants.test.ts b/src/components/ui/button-variants.test.ts
new file mode 100644
index 0000000..5090703
--- /dev/null
+++ b/src/components/ui/button-variants.test.ts
@@ -0,0 +1,28 @@
+import { describe, expect, test } from 'vitest';
+import { buttonVariants } from './button';
+
+describe('buttonVariants', () => {
+  test('returns default variant and size classes when no args are provided', () => {
+    const classes = buttonVariants();
+
+    expect(classes).toContain('bg-primary');
+    expect(classes).toContain('h-9');
+  });
+
+  test('returns destructive and icon classes for explicit options', () => {
+    const classes = buttonVariants({
+      variant: 'destructive',
+      size: 'icon',
+    });
+
+    expect(classes).toContain('bg-destructive');
+    expect(classes).toContain('size-9');
+  });
+
+  test('includes caller-provided className', () => {
+    const classes = buttonVariants({ className: 'w-full' });
+
+    expect(classes).toContain('w-full');
+  });
+});
+
diff --git a/src/components/ui/card.test.tsx b/src/components/ui/card.test.tsx
new file mode 100644
index 0000000..aba3d00
--- /dev/null
+++ b/src/components/ui/card.test.tsx
@@ -0,0 +1,40 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import {
+  Card,
+  CardAction,
+  CardContent,
+  CardDescription,
+  CardFooter,
+  CardHeader,
+  CardTitle,
+} from './card';
+
+describe('Card', () => {
+  test('renders all card slots', () => {
+    render(
+      <Card>
+        <CardHeader>
+          <CardTitle>Card Title</CardTitle>
+          <CardDescription>Card Description</CardDescription>
+          <CardAction>Action</CardAction>
+        </CardHeader>
+        <CardContent>Content</CardContent>
+        <CardFooter>Footer</CardFooter>
+      </Card>,
+    );
+
+    expect(screen.getByText('Card Title')).toHaveAttribute(
+      'data-slot',
+      'card-title',
+    );
+    expect(screen.getByText('Card Description')).toHaveAttribute(
+      'data-slot',
+      'card-description',
+    );
+    expect(screen.getByText('Action')).toHaveAttribute('data-slot', 'card-action');
+    expect(screen.getByText('Content')).toHaveAttribute('data-slot', 'card-content');
+    expect(screen.getByText('Footer')).toHaveAttribute('data-slot', 'card-footer');
+  });
+});
+
diff --git a/src/components/ui/input.test.tsx b/src/components/ui/input.test.tsx
new file mode 100644
index 0000000..aabe76f
--- /dev/null
+++ b/src/components/ui/input.test.tsx
@@ -0,0 +1,22 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import { Input } from './input';
+
+describe('Input', () => {
+  test('renders an input with the expected slot attribute', () => {
+    render(<Input aria-label='Email' />);
+
+    const input = screen.getByLabelText('Email');
+    expect(input).toBeInTheDocument();
+    expect(input).toHaveAttribute('data-slot', 'input');
+  });
+
+  test('supports input type and disabled props', () => {
+    render(<Input aria-label='Password' type='password' disabled />);
+
+    const input = screen.getByLabelText('Password');
+    expect(input).toHaveAttribute('type', 'password');
+    expect(input).toBeDisabled();
+  });
+});
+
diff --git a/src/components/ui/label.test.tsx b/src/components/ui/label.test.tsx
new file mode 100644
index 0000000..08031b6
--- /dev/null
+++ b/src/components/ui/label.test.tsx
@@ -0,0 +1,15 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import { Label } from './label';
+
+describe('Label', () => {
+  test('renders label text and exposes data-slot', () => {
+    render(<Label htmlFor='email'>Email</Label>);
+
+    const label = screen.getByText('Email');
+    expect(label).toBeInTheDocument();
+    expect(label).toHaveAttribute('for', 'email');
+    expect(label).toHaveAttribute('data-slot', 'label');
+  });
+});
+
diff --git a/src/components/ui/pagination.test.tsx b/src/components/ui/pagination.test.tsx
new file mode 100644
index 0000000..77309b8
--- /dev/null
+++ b/src/components/ui/pagination.test.tsx
@@ -0,0 +1,61 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import {
+  Pagination,
+  PaginationContent,
+  PaginationEllipsis,
+  PaginationItem,
+  PaginationLink,
+  PaginationNext,
+  PaginationPrevious,
+} from './pagination';
+
+describe('Pagination UI', () => {
+  test('renders pagination container and list slots', () => {
+    render(
+      <Pagination>
+        <PaginationContent>
+          <PaginationItem>
+            <PaginationLink href='#'>1</PaginationLink>
+          </PaginationItem>
+        </PaginationContent>
+      </Pagination>,
+    );
+
+    const nav = screen.getByLabelText('pagination');
+    expect(nav).toHaveAttribute('data-slot', 'pagination');
+    expect(screen.getByRole('link', { name: '1' })).toHaveAttribute(
+      'data-slot',
+      'pagination-link',
+    );
+  });
+
+  test('sets active page attributes', () => {
+    render(
+      <PaginationLink href='#' isActive>
+        2
+      </PaginationLink>,
+    );
+
+    const link = screen.getByRole('link', { name: '2' });
+    expect(link).toHaveAttribute('aria-current', 'page');
+    expect(link).toHaveAttribute('data-active', 'true');
+  });
+
+  test('renders previous, next, and ellipsis affordances', () => {
+    render(
+      <div>
+        <PaginationPrevious href='#' />
+        <PaginationNext href='#' />
+        <PaginationEllipsis />
+      </div>,
+    );
+
+    expect(
+      screen.getByRole('link', { name: 'Go to previous page' }),
+    ).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: 'Go to next page' })).toBeInTheDocument();
+    expect(screen.getByText('More pages')).toBeInTheDocument();
+  });
+});
+
diff --git a/src/components/ui/skeleton.test.tsx b/src/components/ui/skeleton.test.tsx
new file mode 100644
index 0000000..4459d77
--- /dev/null
+++ b/src/components/ui/skeleton.test.tsx
@@ -0,0 +1,16 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, test } from 'vitest';
+import { Skeleton } from './skeleton';
+
+describe('Skeleton', () => {
+  test('renders with default and custom classes', () => {
+    render(<Skeleton data-testid='skeleton' className='h-4 w-20' />);
+
+    const skeleton = screen.getByTestId('skeleton');
+    expect(skeleton).toHaveAttribute('data-slot', 'skeleton');
+    expect(skeleton.className).toContain('animate-pulse');
+    expect(skeleton.className).toContain('h-4');
+    expect(skeleton.className).toContain('w-20');
+  });
+});
+
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