support flash

src/lib/util/flash.test.ts

@@ -0,0 +1,46 @@
+import { describe, expect, it } from 'vitest'
+import type { MediaAttachment } from '$lib/api/types'
+import { flashAspectRatio, isFlashAttachment } from './flash'
+
+function attachment(overrides: Partial<MediaAttachment> = {}): MediaAttachment {
+  return {
+    id: 'file-1',
+    type: 'unknown',
+    url: 'https://media.example.test/file.bin',
+    preview_url: null,
+    ...overrides,
+  }
+}
+
+describe('Flash attachment detection', () => {
+  it('recognizes Pleroma MIME metadata and explicit Flash types', () => {
+    expect(
+      isFlashAttachment(
+        attachment({ pleroma: { mime_type: 'application/x-shockwave-flash' } }),
+      ),
+    ).toBe(true)
+    expect(isFlashAttachment(attachment({ type: 'flash' }))).toBe(true)
+  })
+
+  it('recognizes case-insensitive SWF paths despite query strings or fragments', () => {
+    expect(
+      isFlashAttachment(
+        attachment({ url: 'https://media.example.test/games/MOVIE.SWF?download=1#play' }),
+      ),
+    ).toBe(true)
+    expect(
+      isFlashAttachment(attachment({ url: 'https://media.example.test/movie.swf.png' })),
+    ).toBe(false)
+  })
+
+  it('uses bounded intrinsic dimensions and a safe fallback', () => {
+    expect(
+      flashAspectRatio(
+        attachment({ meta: { original: { width: 1920, height: 1080 } } }),
+      ),
+    ).toBeCloseTo(16 / 9)
+    expect(
+      flashAspectRatio(attachment({ meta: { original: { width: 10000, height: 1 } } })),
+    ).toBeCloseTo(4 / 3)
+  })
+})