feat: theme changes, composer tweaks, in app update ux, finesse

apps/desktop/src/lib/commit-changelog.test.ts

@@ -0,0 +1,114 @@
+import { describe, expect, it } from 'vitest'
+
+import { buildCommitChangelog, parseCommitHeader } from './commit-changelog'
+
+describe('parseCommitHeader', () => {
+  it('extracts type, scope, and subject from a conventional header', () => {
+    expect(parseCommitHeader('feat(desktop): NSIS prereq detection page')).toEqual({
+      breaking: false,
+      scope: 'desktop',
+      subject: 'NSIS prereq detection page',
+      type: 'feat'
+    })
+  })
+
+  it('flags breaking changes via the `!` marker', () => {
+    expect(parseCommitHeader('feat(api)!: change endpoint shape')).toMatchObject({
+      breaking: true,
+      type: 'feat'
+    })
+  })
+
+  it('treats non-conventional commits as untyped with the full header as subject', () => {
+    expect(parseCommitHeader('Update README')).toEqual({
+      breaking: false,
+      scope: null,
+      subject: 'Update README',
+      type: null
+    })
+  })
+
+  it('ignores body lines and trims whitespace', () => {
+    expect(parseCommitHeader('  fix: handle null input  \n\nMore detail')).toMatchObject({
+      subject: 'handle null input',
+      type: 'fix'
+    })
+  })
+
+  it('returns empty subject for blank input', () => {
+    expect(parseCommitHeader('')).toEqual({ breaking: false, scope: null, subject: '', type: null })
+  })
+})
+
+describe('buildCommitChangelog', () => {
+  it('groups commits into user-friendly buckets and capitalizes subjects', () => {
+    const groups = buildCommitChangelog([
+      { summary: 'feat(desktop): add NSIS prereq detection page' },
+      { summary: 'fix(sidebar): jitter when dragging' },
+      { summary: 'perf: shave 200ms off cold start' },
+      { summary: 'refactor: extract sidebar row component' }
+    ])
+
+    expect(groups.map(g => g.id)).toEqual(['new', 'fixed', 'faster'])
+    expect(groups[0]).toMatchObject({ label: "What's new" })
+    expect(groups[0].items[0]).toBe('Add NSIS prereq detection page')
+    expect(groups[1].items[0]).toBe('Jitter when dragging')
+  })
+
+  it('hides chore/ci/docs/test commits', () => {
+    const groups = buildCommitChangelog([
+      { summary: 'chore: bump deps' },
+      { summary: 'ci: tweak workflow' },
+      { summary: 'docs: spelling fix' },
+      { summary: 'feat: real new feature' }
+    ])
+
+    expect(groups).toHaveLength(1)
+    expect(groups[0].items).toEqual(['Real new feature'])
+  })
+
+  it('routes unparseable commits to the "Other improvements" bucket', () => {
+    const groups = buildCommitChangelog([{ summary: 'Update sidebar styling' }])
+
+    expect(groups[0].id).toBe('other')
+    expect(groups[0].items).toEqual(['Update sidebar styling'])
+  })
+
+  it('falls back to a neutral placeholder when every commit is filtered or empty', () => {
+    const groups = buildCommitChangelog([{ summary: 'chore: bump' }, { summary: 'ci: stuff' }])
+
+    expect(groups).toEqual([{ id: 'other', items: ['Improvements and fixes'], label: 'In this update' }])
+  })
+
+  it('dedupes identical subjects and caps the items per group', () => {
+    const groups = buildCommitChangelog(
+      [
+        { summary: 'fix: thing A' },
+        { summary: 'fix: thing A' },
+        { summary: 'fix: thing B' },
+        { summary: 'fix: thing C' },
+        { summary: 'fix: thing D' },
+        { summary: 'fix: thing E' }
+      ],
+      { maxPerGroup: 3, maxTotal: 10 }
+    )
+
+    expect(groups[0].items).toEqual(['Thing A', 'Thing B', 'Thing C'])
+  })
+
+  it('caps total entries across buckets', () => {
+    const groups = buildCommitChangelog(
+      [
+        { summary: 'feat: a' },
+        { summary: 'feat: b' },
+        { summary: 'fix: c' },
+        { summary: 'fix: d' },
+        { summary: 'perf: e' }
+      ],
+      { maxTotal: 3 }
+    )
+
+    const totalItems = groups.reduce((sum, g) => sum + g.items.length, 0)
+    expect(totalItems).toBe(3)
+  })
+})