test: add unit tests for base components-part-1 (#32154)

web/app/components/base/skeleton/index.spec.tsx

@@ -0,0 +1,83 @@
+import { render, screen } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import {
+  SkeletonContainer,
+  SkeletonPoint,
+  SkeletonRectangle,
+  SkeletonRow,
+} from './index'
+
+describe('Skeleton Components', () => {
+  describe('Individual Components', () => {
+    it('should forward attributes and render children in SkeletonContainer', () => {
+      render(
+        <SkeletonContainer data-testid="container" className="custom-container">
+          <span>Content</span>
+        </SkeletonContainer>,
+      )
+      const element = screen.getByTestId('container')
+      expect(element).toHaveClass('flex', 'flex-col', 'custom-container')
+      expect(screen.getByText('Content')).toBeInTheDocument()
+    })
+
+    it('should forward attributes and render children in SkeletonRow', () => {
+      render(
+        <SkeletonRow data-testid="row" className="custom-row">
+          <span>Row Content</span>
+        </SkeletonRow>,
+      )
+      const element = screen.getByTestId('row')
+      expect(element).toHaveClass('flex', 'items-center', 'custom-row')
+      expect(screen.getByText('Row Content')).toBeInTheDocument()
+    })
+
+    it('should apply base skeleton styles to SkeletonRectangle', () => {
+      render(<SkeletonRectangle data-testid="rect" className="w-10" />)
+      const element = screen.getByTestId('rect')
+      expect(element).toHaveClass('h-2', 'bg-text-quaternary', 'opacity-20', 'w-10')
+    })
+
+    it('should render the separator character correctly in SkeletonPoint', () => {
+      render(<SkeletonPoint data-testid="point" />)
+      const element = screen.getByTestId('point')
+      expect(element).toHaveTextContent('·')
+      expect(element).toHaveClass('text-text-quaternary')
+    })
+  })
+
+  describe('Composition & Layout', () => {
+    it('should render a full skeleton structure accurately', () => {
+      const { container } = render(
+        <SkeletonContainer className="main-wrapper">
+          <SkeletonRow>
+            <SkeletonRectangle className="rect-1" />
+            <SkeletonPoint />
+            <SkeletonRectangle className="rect-2" />
+          </SkeletonRow>
+        </SkeletonContainer>,
+      )
+
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass('main-wrapper')
+
+      expect(container.querySelector('.rect-1')).toBeInTheDocument()
+      expect(container.querySelector('.rect-2')).toBeInTheDocument()
+
+      const row = container.querySelector('.flex.items-center')
+      expect(row).toContainElement(container.querySelector('.rect-1') as HTMLElement)
+      expect(row).toHaveTextContent('·')
+    })
+  })
+
+  it('should handle rest props like event listeners', async () => {
+    const onClick = vi.fn()
+    const user = userEvent.setup()
+    render(<SkeletonRectangle onClick={onClick} data-testid="clickable" />)
+
+    const element = screen.getByTestId('clickable')
+
+    await user.click(element)
+    expect(onClick).toHaveBeenCalledTimes(1)
+  })
+})