refactor(core): CORE-01 migrate utility contracts to TypeScript

test/browser/utils.spec.js

@@ -0,0 +1,48 @@
+import { expect, test } from './fixtures.js'
+
+for (const core of ['published', 'candidate']) {
+  test(`${core}: subtitle object URL contains real VTT data`, async ({ page }) => {
+    await page.goto(`/test/player.html?core=${core}&chapter=published`)
+    expect(await page.evaluate(async () => {
+      const content = 'WEBVTT\n\n00:00:01.000 --> 00:00:02.000\nText\n'
+      const url = window.Artplayer.utils.vttToBlob(content)
+      try {
+        const response = await fetch(url)
+        return { blob: url.startsWith('blob:'), type: response.headers.get('content-type'), text: await response.text() }
+      }
+      finally {
+        URL.revokeObjectURL(url)
+      }
+    })).toEqual({ blob: true, type: 'text/vtt', text: 'WEBVTT\n\n00:00:01.000 --> 00:00:02.000\nText\n' })
+  })
+
+  test(`${core}: download starts and removes its temporary anchor`, async ({ page }) => {
+    await page.goto(`/test/player.html?core=${core}&chapter=published`)
+    const download = page.waitForEvent('download')
+    await page.evaluate(() => window.Artplayer.utils.download('/test/pattern.mp4', 'sample.mp4'))
+    const result = await download
+    expect(result.suggestedFilename()).toBe('sample.mp4')
+    expect(await result.failure()).toBeNull()
+    await expect(page.locator('a[download]')).toHaveCount(0)
+  })
+}
+
+test('candidate download releases the anchor even when click fails', async ({ page }) => {
+  await page.goto('/test/player.html?core=candidate&chapter=published')
+  expect(await page.evaluate(() => {
+    const click = HTMLAnchorElement.prototype.click
+    HTMLAnchorElement.prototype.click = () => {
+      throw new Error('controlled click failure')
+    }
+    try {
+      window.Artplayer.utils.download('/test/pattern.mp4', 'sample.mp4')
+    }
+    catch (error) {
+      return error.message
+    }
+    finally {
+      HTMLAnchorElement.prototype.click = click
+    }
+  })).toBe('controlled click failure')
+  await expect(page.locator('a[download]')).toHaveCount(0)
+})