Phase7-PerfSEO: 폰트 preload 옵션 및 이미지 loading/decoding UI 연동 TDD/구현 완료

lib/exporter/font.preload.test.ts

@@ -0,0 +1,35 @@
+import { describe, it, expect } from 'vitest'
+import { exportPage, type ExportOptions } from '@/lib/exporter/html'
+import { pageSchema, type Page } from '@/lib/schema/page'
+
+function makePage(fontFamily = 'Inter'): Page {
+  return pageSchema.parse({
+    title: 'Font Preload',
+    locale: 'en',
+    theme: { primaryColor: '#2563eb', fontFamily },
+    sections: [ { type: 'hero', props: { heading: 'Hello', subheading: 'World', imageUrl: 'https://img/h.png' } } ],
+    form: { actionUrl: '', fields: [], spamProtection: { honeypotFieldName: '_hp', minSubmitSeconds: 2 } },
+    seo: { title: 't', description: 'd' },
+  })
+}
+
+describe('폰트 preload 옵션', () => {
+  it('옵션이 true이면 Google Fonts stylesheet preload/link를 head에 포함한다', () => {
+    const page = makePage('Inter')
+    const opts: ExportOptions = { fontPreload: true }
+    const out = exportPage(page, opts)
+    expect(out.html).toContain('rel="preload"')
+    expect(out.html).toContain('as="style"')
+    expect(out.html).toContain('fonts.googleapis.com/css2')
+    expect(out.html).toContain('family=Inter')
+    // onload print hack 포함
+    expect(out.html).toMatch(/rel=\"stylesheet\"[^>]+media=\"print\"[^>]+onload=\"this.media='all'\"/)
+  })
+
+  it('옵션이 false이면 preload/link를 포함하지 않는다', () => {
+    const page = makePage('Inter')
+    const opts: ExportOptions = { fontPreload: false }
+    const out = exportPage(page, opts)
+    expect(out.html).not.toMatch(/fonts.googleapis.com\/css2/)
+  })
+})