playwright/tests/page/page-listeners.spec.ts

68 lines
2.3 KiB
TypeScript

/**
* Copyright 2018 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 { ManualPromise } from '../../packages/playwright-core/lib/utils/isomorphic/manualPromise';
import { test as it, expect } from './pageTest';
// This test is mostly for type checking, the actual tests are in the library/events.
it('should not throw with ignoreErrors', async ({ page }) => {
const reachedHandler = new ManualPromise();
const releaseHandler = new ManualPromise();
page.on('console', async () => {
reachedHandler.resolve();
await releaseHandler;
throw new Error('Error in console handler');
});
await page.evaluate('console.log(1)');
await reachedHandler;
await page.removeAllListeners('console', { behavior: 'ignoreErrors' });
releaseHandler.resolve();
await page.waitForTimeout(1000);
});
it('should wait', async ({ page }) => {
const reachedHandler = new ManualPromise();
const releaseHandler = new ManualPromise();
let value = 0;
page.on('console', async () => {
reachedHandler.resolve();
value = 42;
});
await page.evaluate('console.log(1)');
await reachedHandler;
const removePromise = page.removeAllListeners('console', { behavior: 'wait' });
releaseHandler.resolve();
await removePromise;
expect(value).toBe(42);
});
it('wait should throw', async ({ page }) => {
const reachedHandler = new ManualPromise();
const releaseHandler = new ManualPromise();
page.on('console', async () => {
reachedHandler.resolve();
await releaseHandler;
throw new Error('Error in handler');
});
await page.evaluate('console.log(1)');
await reachedHandler;
const removePromise = page.removeAllListeners('console', { behavior: 'wait' });
releaseHandler.resolve();
await expect(removePromise).rejects.toThrow('Error in handler');
});