test(useRepositoryUrl): add regression tests for monorepo .git URL handling

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: howwohmm

test/nuxt/composables/use-repository-url.spec.ts

@@ -0,0 +1,74 @@
+import { describe, expect, it } from 'vitest'
+
+/**
+ * Tests for useRepositoryUrl composable.
+ *
+ * Regression tests for GitHub issue #2233: monorepo packages with .git suffix
+ * in repository.url generated broken source links like:
+ * https://github.com/org/repo.git/tree/HEAD/packages/foo (404)
+ * instead of:
+ * https://github.com/org/repo/tree/HEAD/packages/foo
+ */
+describe('useRepositoryUrl', () => {
+  it('should strip .git from repository URL', () => {
+    const { repositoryUrl } = useRepositoryUrl(ref({
+      repository: {
+        type: 'git',
+        url: 'git+https://github.com/agentmarkup/agentmarkup.git',
+      },
+    }))
+
+    expect(repositoryUrl.value).toBe('https://github.com/agentmarkup/agentmarkup')
+  })
+
+  it('should append /tree/HEAD/{directory} for monorepo packages without .git', () => {
+    const { repositoryUrl } = useRepositoryUrl(ref({
+      repository: {
+        type: 'git',
+        url: 'git+https://github.com/agentmarkup/agentmarkup.git',
+        directory: 'packages/vite',
+      },
+    }))
+
+    expect(repositoryUrl.value).toBe(
+      'https://github.com/agentmarkup/agentmarkup/tree/HEAD/packages/vite',
+    )
+  })
+
+  it('should return null when repository has no url', () => {
+    const { repositoryUrl } = useRepositoryUrl(ref({
+      repository: {},
+    }))
+
+    expect(repositoryUrl.value).toBeNull()
+  })
+
+  it('should return null when no repository field', () => {
+    const { repositoryUrl } = useRepositoryUrl(ref({}))
+
+    expect(repositoryUrl.value).toBeNull()
+  })
+
+  it('should handle plain HTTPS URLs without .git suffix', () => {
+    const { repositoryUrl } = useRepositoryUrl(ref({
+      repository: {
+        url: 'https://github.com/nuxt/ui',
+      },
+    }))
+
+    expect(repositoryUrl.value).toBe('https://github.com/nuxt/ui')
+  })
+
+  it('should handle directory with trailing slash', () => {
+    const { repositoryUrl } = useRepositoryUrl(ref({
+      repository: {
+        url: 'git+https://github.com/org/repo.git',
+        directory: 'packages/core/',
+      },
+    }))
+
+    expect(repositoryUrl.value).toBe(
+      'https://github.com/org/repo/tree/HEAD/packages/core/',
+    )
+  })
+})