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/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 ++++++++
 7 files changed, 212 insertions(+)
 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/ui')

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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