test: cover renderer state helpers

tests/unit/use-update-dialog-state.test.ts

@@ -0,0 +1,81 @@
+import { describe, expect, it } from 'vitest'
+import type { UpdateDialogCatalog, UpdateRelease } from '../../src/main/types/update.types'
+import {
+  getInitialSelectedRelease,
+  releaseKey
+} from '../../src/renderer/src/hooks/useUpdateDialogState'
+
+const stableRelease: UpdateRelease = {
+  version: '1.4.1',
+  channel: 'stable',
+  artifactKey: 'stable-141.exe',
+  sha256: 'stable-hash',
+  size: 100,
+  publishedAt: '2026-03-21T10:00:00.000Z',
+  changelogKey: 'stable-141.md',
+  notesSummary: 'stable summary'
+}
+
+const previewRelease: UpdateRelease = {
+  version: '1.5.0-preview.1',
+  channel: 'preview',
+  artifactKey: 'preview-150.exe',
+  sha256: 'preview-hash',
+  size: 100,
+  publishedAt: '2026-03-22T10:00:00.000Z',
+  changelogKey: 'preview-150.md',
+  notesSummary: 'preview summary'
+}
+
+describe('useUpdateDialogState helpers', () => {
+  it('builds stable release keys', () => {
+    expect(releaseKey(stableRelease)).toBe('stable:1.4.1')
+  })
+
+  it('returns undefined for disabled catalog', () => {
+    const catalog: UpdateDialogCatalog = { mode: 'disabled' }
+    expect(getInitialSelectedRelease(catalog)).toBeUndefined()
+  })
+
+  it('prefers recommended user release', () => {
+    const catalog: UpdateDialogCatalog = {
+      mode: 'user',
+      recommendedRelease: stableRelease
+    }
+
+    expect(getInitialSelectedRelease(catalog)).toEqual(stableRelease)
+  })
+
+  it('prefers recommended admin release before channel fallbacks', () => {
+    const catalog: UpdateDialogCatalog = {
+      mode: 'admin',
+      recommendedRelease: previewRelease,
+      channels: {
+        stable: [stableRelease],
+        preview: [previewRelease]
+      }
+    }
+
+    expect(getInitialSelectedRelease(catalog)).toEqual(previewRelease)
+  })
+
+  it('falls back to stable then preview when admin recommendation is absent', () => {
+    const stableCatalog: UpdateDialogCatalog = {
+      mode: 'admin',
+      channels: {
+        stable: [stableRelease],
+        preview: [previewRelease]
+      }
+    }
+    const previewCatalog: UpdateDialogCatalog = {
+      mode: 'admin',
+      channels: {
+        stable: [],
+        preview: [previewRelease]
+      }
+    }
+
+    expect(getInitialSelectedRelease(stableCatalog)).toEqual(stableRelease)
+    expect(getInitialSelectedRelease(previewCatalog)).toEqual(previewRelease)
+  })
+})