fix(route): make sure Route.fetch works for popup main request (#26590)

References #24603.

packages/playwright-core/src/client/browserContext.ts

@@ -190,6 +190,7 @@ export class BrowserContext extends ChannelOwner<channels.BrowserContextChannel>
   }
 
   async _onRoute(route: network.Route) {
+    route._context = this;
     const routeHandlers = this._routes.slice();
     for (const routeHandler of routeHandlers) {
       if (!routeHandler.matches(route.request().url()))

packages/playwright-core/src/client/network.ts

@@ -33,6 +33,7 @@ import { urlMatches } from '../utils/network';
 import { MultiMap } from '../utils/multimap';
 import { APIResponse } from './fetch';
 import type { Serializable } from '../../types/structs';
+import type { BrowserContext } from './browserContext';
 
 export type NetworkCookie = {
   name: string,
@@ -158,11 +159,6 @@ export class Request extends ChannelOwner<channels.RequestChannel> implements ap
     return this._provisionalHeaders.headers();
   }
 
-  _context() {
-    // TODO: make sure this works for service worker requests.
-    return this.frame().page().context();
-  }
-
   _actualHeaders(): Promise<RawHeaders> {
     if (this._fallbackOverrides.headers)
       return Promise.resolve(RawHeaders._fromHeadersObjectLossy(this._fallbackOverrides.headers));
@@ -277,6 +273,7 @@ export class Request extends ChannelOwner<channels.RequestChannel> implements ap
 
 export class Route extends ChannelOwner<channels.RouteChannel> implements api.Route {
   private _handlingPromise: ManualPromise<boolean> | null = null;
+  _context!: BrowserContext;
 
   static from(route: channels.RouteChannel): Route {
     return (route as any)._object;
@@ -322,8 +319,7 @@ export class Route extends ChannelOwner<channels.RouteChannel> implements api.Ro
 
   async fetch(options: FallbackOverrides & { maxRedirects?: number, timeout?: number } = {}): Promise<APIResponse> {
     return await this._wrapApiCall(async () => {
-      const context = this.request()._context();
-      return context.request._innerFetch({ request: this.request(), data: options.postData, ...options });
+      return this._context.request._innerFetch({ request: this.request(), data: options.postData, ...options });
     });
   }
 

packages/playwright-core/src/client/page.ts

@@ -171,6 +171,7 @@ export class Page extends ChannelOwner<channels.PageChannel> implements api.Page
   }
 
   private async _onRoute(route: Route) {
+    route._context = this.context();
     const routeHandlers = this._routes.slice();
     for (const routeHandler of routeHandlers) {
       if (!routeHandler.matches(route.request().url()))

packages/playwright-core/src/server/dispatchers/networkDispatchers.ts

@@ -128,13 +128,12 @@ export class RouteDispatcher extends Dispatcher<Route, channels.RouteChannel, Re
 
   private constructor(scope: RequestDispatcher, route: Route) {
     super(scope, route, 'Route', {
-      // Context route can point to a non-reported request.
+      // Context route can point to a non-reported request, so we send the request in the initializer.
       request: scope
     });
   }
 
   async continue(params: channels.RouteContinueParams, metadata: CallMetadata): Promise<channels.RouteContinueResult> {
-    // Used to discriminate between continue in tracing.
     await this._object.continue({
       url: params.url,
       method: params.method,
@@ -145,12 +144,10 @@ export class RouteDispatcher extends Dispatcher<Route, channels.RouteChannel, Re
   }
 
   async fulfill(params: channels.RouteFulfillParams, metadata: CallMetadata): Promise<void> {
-    // Used to discriminate between fulfills in tracing.
     await this._object.fulfill(params);
   }
 
   async abort(params: channels.RouteAbortParams, metadata: CallMetadata): Promise<void> {
-    // Used to discriminate between abort in tracing.
     await this._object.abort(params.errorCode || 'failed');
   }
 

tests/page/page-event-popup.spec.ts

@@ -121,6 +121,7 @@ it('should work with clicking target=_blank', async ({ page, server }) => {
   ]);
   expect(await page.evaluate(() => !!window.opener)).toBe(false);
   expect(await popup.evaluate(() => !!window.opener)).toBe(true);
+  expect(popup.mainFrame().page()).toBe(popup);
 });
 
 it('should work with fake-clicking target=_blank and rel=noopener', async ({ page, server }) => {

tests/page/page-request-intercept.spec.ts

@@ -265,3 +265,19 @@ it('should intercept with post data override', async ({ page, server, isElectron
   const request = await requestPromise;
   expect((await request.postBody).toString()).toBe(JSON.stringify({ 'foo': 'bar' }));
 });
+
+it('should fulfill popup main request using alias', async ({ page, server, isElectron, isAndroid }) => {
+  it.fixme(isElectron, 'error: Browser context management is not supported.');
+  it.skip(isAndroid, 'The internal Android localhost (10.0.0.2) != the localhost on the host');
+
+  await page.context().route('**/*', async route => {
+    const response = await route.fetch();
+    await route.fulfill({ response, body: 'hello' });
+  });
+  await page.setContent(`<a target=_blank href="${server.EMPTY_PAGE}">click me</a>`);
+  const [popup] = await Promise.all([
+    page.waitForEvent('popup'),
+    page.getByText('click me').click(),
+  ]);
+  await expect(popup.locator('body')).toHaveText('hello');
+});