# 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. from playwright.sync_api import Page def test_page_errors_should_work(page: Page) -> None: page.evaluate( """async () => { for (let i = 0; i < 301; i++) window.setTimeout(() => { throw new Error('error' + i); }, 0); await new Promise(f => window.setTimeout(f, 100)); }""" ) errors = page.page_errors() messages = [e.message for e in errors] expected = [] for i in range(201, 301): expected.append(f"error{i}") assert len(messages) >= 100, "should be at least 100 errors" message_count = len(messages) - len(expected) assert messages[message_count:] == expected, "should return last errors"