참고소스 수정본

참고/playwright-main/tests/installation/concurrent-download.spec.ts

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+/**
+ * Copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { test } from './npmTest';
+import fs from 'fs';
+test.use({ isolateBrowsers: true });
+
+test('concurrent browser downloads should not clobber each other', async ({ exec }, testInfo) => {
+  await exec('npm init -y');
+  await exec('npm install playwright');
+  const numProcesses = 3;
+  await Promise.all(Array.from({ length: numProcesses }, async (_, index) => {
+    const browserPath = testInfo.outputPath(`browsers-${index}`);
+    await exec('npx playwright install chromium', {
+      env: {
+        PLAYWRIGHT_BROWSERS_PATH: browserPath,
+      }
+    });
+
+    // Check that each installation has all required binaries
+    const entries = await fs.promises.readdir(browserPath).catch(() => []);
+    const installed = new Set(entries.map(entry => entry.split('-')[0].replace(/_/g, '-')).filter(name => !name.startsWith('.')));
+    test.expect(installed.has('chromium')).toBeTruthy();
+    test.expect(installed.has('chromium-headless-shell')).toBeTruthy();
+    test.expect(installed.has('ffmpeg')).toBeTruthy();
+  }));
+});