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playwright/tests/page-wait-for-response.spec.ts
Dmitry Gozman 243ede5dfb
feat(waitForEvent): allow async predicate ()
We await the predicate now. For synchronous predicates,
nothing should change becase the await will finish before
the next protocol message arrives (thanks to `makeWaitForNextTask`).
2021-04-19 10:32:51 -07:00

116 lines
4.0 KiB
TypeScript

/**
* Copyright 2017 Google Inc. All rights reserved.
* Modifications 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 as it, expect } from './config/pageTest';
it('should work', async ({page, server}) => {
await page.goto(server.EMPTY_PAGE);
const [response] = await Promise.all([
page.waitForResponse(server.PREFIX + '/digits/2.png'),
page.evaluate(() => {
fetch('/digits/1.png');
fetch('/digits/2.png');
fetch('/digits/3.png');
})
]);
expect(response.url()).toBe(server.PREFIX + '/digits/2.png');
});
it('should respect timeout', async ({page, playwright}) => {
let error = null;
await page.waitForEvent('response', { predicate: () => false, timeout: 1 }).catch(e => error = e);
expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
});
it('should respect default timeout', async ({page, playwright}) => {
let error = null;
page.setDefaultTimeout(1);
await page.waitForEvent('response', () => false).catch(e => error = e);
expect(error).toBeInstanceOf(playwright.errors.TimeoutError);
});
it('should log the url', async ({page}) => {
const error1 = await page.waitForResponse('foo.css', { timeout: 100 }).catch(e => e);
expect(error1.message).toContain('waiting for response "foo.css"');
const error2 = await page.waitForResponse(/foo.css/i, { timeout: 100 }).catch(e => e);
expect(error2.message).toContain('waiting for response /foo.css/i');
});
it('should work with predicate', async ({page, server}) => {
await page.goto(server.EMPTY_PAGE);
const [response] = await Promise.all([
page.waitForEvent('response', response => response.url() === server.PREFIX + '/digits/2.png'),
page.evaluate(() => {
fetch('/digits/1.png');
fetch('/digits/2.png');
fetch('/digits/3.png');
})
]);
expect(response.url()).toBe(server.PREFIX + '/digits/2.png');
});
it('should work with async predicate', async ({page, server}) => {
await page.goto(server.EMPTY_PAGE);
const [response1, response2] = await Promise.all([
page.waitForEvent('response', async response => {
const text = await response.text();
return text.includes('contents of the file');
}),
page.waitForResponse(async response => {
const text = await response.text();
return text.includes('bar');
}),
page.evaluate(() => {
fetch('/simple.json').then(r => r.json());
fetch('/file-to-upload.txt').then(r => r.text());
})
]);
expect(response1.url()).toBe(server.PREFIX + '/file-to-upload.txt');
expect(response2.url()).toBe(server.PREFIX + '/simple.json');
});
it('sync predicate should be only called once', async ({page, server}) => {
await page.goto(server.EMPTY_PAGE);
let counter = 0;
const [response] = await Promise.all([
page.waitForEvent('response', response => {
++counter;
return response.url() === server.PREFIX + '/digits/1.png';
}),
page.evaluate(() => {
fetch('/digits/1.png');
fetch('/digits/2.png');
fetch('/digits/3.png');
})
]);
expect(response.url()).toBe(server.PREFIX + '/digits/1.png');
expect(counter).toBe(1);
});
it('should work with no timeout', async ({page, server}) => {
await page.goto(server.EMPTY_PAGE);
const [response] = await Promise.all([
page.waitForResponse(server.PREFIX + '/digits/2.png', { timeout: 0 }),
page.evaluate(() => setTimeout(() => {
fetch('/digits/1.png');
fetch('/digits/2.png');
fetch('/digits/3.png');
}, 50))
]);
expect(response.url()).toBe(server.PREFIX + '/digits/2.png');
});