chore: add tests

Author: Flo0806

test/unit/playground-links.spec.ts

@@ -0,0 +1,133 @@
+import { describe, expect, it, vi, beforeAll } from 'vitest'
+
+// Mock the global Nuxt auto-import before importing the module
+beforeAll(() => {
+  vi.stubGlobal(
+    'getShikiHighlighter',
+    vi.fn().mockResolvedValue({
+      getLoadedLanguages: () => [],
+      codeToHtml: (code: string) => `<pre><code>${code}</code></pre>`,
+    }),
+  )
+})
+
+// Import after mock is set up
+const { renderReadmeHtml } = await import('../../server/utils/readme')
+
+describe('Playground Link Extraction', () => {
+  describe('StackBlitz', () => {
+    it('extracts stackblitz.com links', async () => {
+      const markdown = `Check out [Demo on StackBlitz](https://stackblitz.com/github/user/repo)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(1)
+      expect(result.playgroundLinks[0]).toMatchObject({
+        provider: 'stackblitz',
+        providerName: 'StackBlitz',
+        label: 'Demo on StackBlitz',
+        url: 'https://stackblitz.com/github/user/repo',
+      })
+    })
+  })
+
+  describe('CodeSandbox', () => {
+    it('extracts codesandbox.io links', async () => {
+      const markdown = `[Try it](https://codesandbox.io/s/example-abc123)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(1)
+      expect(result.playgroundLinks[0]).toMatchObject({
+        provider: 'codesandbox',
+        providerName: 'CodeSandbox',
+      })
+    })
+
+    it('extracts githubbox.com links as CodeSandbox', async () => {
+      const markdown = `[Demo](https://githubbox.com/user/repo/tree/main/examples)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(1)
+      expect(result.playgroundLinks[0].provider).toBe('codesandbox')
+    })
+  })
+
+  describe('Other Providers', () => {
+    it('extracts CodePen links', async () => {
+      const markdown = `[Pen](https://codepen.io/user/pen/abc123)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks[0].provider).toBe('codepen')
+    })
+
+    it('extracts Replit links', async () => {
+      const markdown = `[Repl](https://replit.com/@user/project)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks[0].provider).toBe('replit')
+    })
+
+    it('extracts Gitpod links', async () => {
+      const markdown = `[Open in Gitpod](https://gitpod.io/#https://github.com/user/repo)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks[0].provider).toBe('gitpod')
+    })
+  })
+
+  describe('Multiple Links', () => {
+    it('extracts multiple playground links', async () => {
+      const markdown = `
+- [StackBlitz](https://stackblitz.com/example1)
+- [CodeSandbox](https://codesandbox.io/s/example2)
+`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(2)
+      expect(result.playgroundLinks[0].provider).toBe('stackblitz')
+      expect(result.playgroundLinks[1].provider).toBe('codesandbox')
+    })
+
+    it('deduplicates same URL', async () => {
+      const markdown = `
+[Demo 1](https://stackblitz.com/example)
+[Demo 2](https://stackblitz.com/example)
+`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(1)
+    })
+  })
+
+  describe('Non-Playground Links', () => {
+    it('ignores regular GitHub links', async () => {
+      const markdown = `[Repo](https://github.com/user/repo)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(0)
+    })
+
+    it('ignores npm links', async () => {
+      const markdown = `[Package](https://npmjs.com/package/test)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(0)
+    })
+  })
+
+  describe('Edge Cases', () => {
+    it('returns empty array for empty content', async () => {
+      const result = await renderReadmeHtml('', 'test-pkg')
+
+      expect(result.playgroundLinks).toEqual([])
+      expect(result.html).toBe('')
+    })
+
+    it('handles badge images wrapped in links', async () => {
+      const markdown = `[![Open in StackBlitz](https://img.shields.io/badge/Open-StackBlitz-blue)](https://stackblitz.com/example)`
+      const result = await renderReadmeHtml(markdown, 'test-pkg')
+
+      expect(result.playgroundLinks).toHaveLength(1)
+      expect(result.playgroundLinks[0].provider).toBe('stackblitz')
+    })
+  })
+})