fix: support relative downloadsPath directory for downloads (#6402)

Author: mxschmitt

src/server/browserType.ts

@@ -271,8 +271,10 @@ function copyTestHooks(from: object, to: object) {
 
 function validateLaunchOptions<Options extends types.LaunchOptions>(options: Options): Options {
   const { devtools = false } = options;
-  let { headless = !devtools } = options;
+  let { headless = !devtools, downloadsPath } = options;
   if (debugMode())
     headless = false;
-  return { ...options, devtools, headless };
+  if (downloadsPath && !path.isAbsolute(downloadsPath))
+    downloadsPath = path.join(process.cwd(), downloadsPath);
+  return { ...options, devtools, headless, downloadsPath };
 }

tests/downloads-path.spec.ts

@@ -16,6 +16,7 @@
 
 import { playwrightTest as it, expect } from './config/browserTest';
 import fs from 'fs';
+import path from 'path';
 
 it.describe('downloads path', () => {
   it.beforeEach(async ({server}) => {
@@ -71,6 +72,20 @@ it.describe('downloads path', () => {
     await downloadsBrowser.close();
   });
 
+  it('should report downloads in downloadsPath folder with a relative path', async ({browserType, browserOptions, server}, testInfo) => {
+    const downloadsBrowser = await browserType.launch({ ...browserOptions, downloadsPath: path.relative(process.cwd(), testInfo.outputPath('')) });
+    const page = await downloadsBrowser.newPage({ acceptDownloads: true });
+    await page.setContent(`<a href="${server.PREFIX}/download">download</a>`);
+    const [ download ] = await Promise.all([
+      page.waitForEvent('download'),
+      page.click('a')
+    ]);
+    const downloadPath = await download.path();
+    expect(downloadPath.startsWith(testInfo.outputPath(''))).toBeTruthy();
+    await page.close();
+    await downloadsBrowser.close();
+  });
+
   it('should accept downloads in persistent context', async ({launchPersistent, server}, testInfo)  => {
     const { context, page } = await launchPersistent({ acceptDownloads: true, downloadsPath: testInfo.outputPath('') });
     await page.setContent(`<a href="${server.PREFIX}/download">download</a>`);