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fix(core): wait for HTTP in
ngOnInit
correctly before server render (…
…#50573) Previously, with `mergeMap` we did not cancel previous subscriptions to zoneIsStable which caused the application to be stablized before hand. Closes: #50562 PR Close #50573
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44 changes: 44 additions & 0 deletions
44
integration/platform-server/e2e/src/http-transferstate-lazy-on-init-spec.ts
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/** | ||
* @license | ||
* Copyright Google LLC All Rights Reserved. | ||
* | ||
* Use of this source code is governed by an MIT-style license that can be | ||
* found in the LICENSE file at https://angular.io/license | ||
*/ | ||
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import {browser, by, element} from 'protractor'; | ||
import {bootstrapClientApp, navigateTo, verifyNoBrowserErrors} from './util'; | ||
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describe('Http TransferState Lazy On Init', () => { | ||
beforeEach(async () => { | ||
// Don't wait for Angular since it is not bootstrapped automatically. | ||
await browser.waitForAngularEnabled(false); | ||
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// Load the page without waiting for Angular since it is not bootstrapped automatically. | ||
await navigateTo('http-transferstate-lazy-on-init'); | ||
}); | ||
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afterEach(async () => { | ||
// Make sure there were no client side errors. | ||
await verifyNoBrowserErrors(); | ||
}); | ||
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it('should transfer http state in lazy component', async () => { | ||
// Test the contents from the server. | ||
expect(await element(by.css('div.one')).getText()).toBe('API 1 response'); | ||
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// Bootstrap the client side app and retest the contents | ||
await bootstrapClientApp(); | ||
expect(await element(by.css('div.one')).getText()).toBe('API 1 response'); | ||
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// Validate that there were no HTTP calls to '/api'. | ||
const requests = await browser.executeScript(() => { | ||
return performance.getEntriesByType('resource'); | ||
}); | ||
const apiRequests = (requests as {name: string}[]) | ||
.filter(({name}) => name.includes('/api')) | ||
.map(({name}) => name); | ||
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expect(apiRequests).toEqual([]); | ||
}); | ||
}); |
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27 changes: 27 additions & 0 deletions
27
...dule/src/app/http-transferstate-lazy-on-init/http-transferstate-lazy-on-init.component.ts
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/** | ||
* @license | ||
* Copyright Google LLC All Rights Reserved. | ||
* | ||
* Use of this source code is governed by an MIT-style license that can be | ||
* found in the LICENSE file at https://angular.io/license | ||
*/ | ||
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import {HttpClient} from '@angular/common/http'; | ||
import {Component, OnInit} from '@angular/core'; | ||
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@Component({ | ||
selector: 'transfer-state-http-on-init', | ||
template: ` <div class="one">{{ responseOne }}</div> `, | ||
}) | ||
export class TransferStateComponentOnInit implements OnInit { | ||
responseOne: string = ''; | ||
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constructor(private readonly httpClient: HttpClient) {} | ||
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ngOnInit(): void { | ||
// Test that HTTP cache works when HTTP call is made in a lifecycle hook. | ||
this.httpClient.get<any>('http://localhost:4206/api').subscribe((response) => { | ||
this.responseOne = response.data; | ||
}); | ||
} | ||
} |
18 changes: 18 additions & 0 deletions
18
...gmodule/src/app/http-transferstate-lazy-on-init/http-transferstate-lazy-on-init.module.ts
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import {CommonModule} from '@angular/common'; | ||
import {HttpClientModule} from '@angular/common/http'; | ||
import {NgModule} from '@angular/core'; | ||
import {RouterModule, Routes} from '@angular/router'; | ||
import {TransferStateComponentOnInit} from './http-transferstate-lazy-on-init.component'; | ||
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const routes: Routes = [ | ||
{ | ||
path: '', | ||
component: TransferStateComponentOnInit, | ||
}, | ||
]; | ||
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@NgModule({ | ||
imports: [RouterModule.forChild(routes), HttpClientModule, CommonModule], | ||
declarations: [TransferStateComponentOnInit], | ||
}) | ||
export class HttpTransferStateOnInitModule {} |
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29 changes: 29 additions & 0 deletions
29
...andalone/src/app/http-transferstate-lazy-on-init/http-transfer-state-on-init.component.ts
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/** | ||
* @license | ||
* Copyright Google LLC All Rights Reserved. | ||
* | ||
* Use of this source code is governed by an MIT-style license that can be | ||
* found in the LICENSE file at https://angular.io/license | ||
*/ | ||
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import {HttpClient} from '@angular/common/http'; | ||
import {Component, OnInit} from '@angular/core'; | ||
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@Component({ | ||
selector: 'transfer-state-http', | ||
standalone: true, | ||
template: ` <div class="one">{{ responseOne }}</div> `, | ||
providers: [HttpClient], | ||
}) | ||
export class TransferStateOnInitComponent implements OnInit { | ||
responseOne: string = ''; | ||
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constructor(private readonly httpClient: HttpClient) {} | ||
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ngOnInit(): void { | ||
// Test that HTTP cache works when HTTP call is made in a lifecycle hook. | ||
this.httpClient.get<any>('http://localhost:4206/api').subscribe((response) => { | ||
this.responseOne = response.data; | ||
}); | ||
} | ||
} |
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