Playwright Test runs tests in parallel. In order to achieve that, it runs several worker processes that run at the same time. By default, test files are run in parallel. Tests in a single file are run in order, in the same worker process. You can configure tests using test.describe.configure to run tests in a single file in parallel.

Feb 24, 2025 · Learn how to optimize parallel test execution in Playwright with strategies to avoid collisions and improve performance in CI/CD pipelines.

Apr 11, 2025 · To explicitly configure all your tests to run in parallel, you can utilize the fullyParallel option in your Playwright configuration file or project settings. This option instructs Playwright to maximize parallelism by launching separate workers for each test file.

May 30, 2023 · With test.describe.configure, you can enable parallel execution of tests within a single file. You can make all tests in your project run in parallel using the fullyParallel configuration option. You can switch off parallelism entirely by setting the worker count to one.

Jan 14, 2025 · Playwright has great features around running your tests in parallel. Let's walk through some test execution nuances that may or may not be obvious for the framework. By default, the configuration file allocates an undefined number of workers for normal runs and one worker for Continuous Integration (CI) runs.

Feb 13, 2025 · Running tests sequentially can slow down your feedback loop, but by leveraging parallel execution with Playwright, you can dramatically reduce test times. This guide will walk you through how to run your tests concurrently, enabling faster iteration without compromising quality.

Sep 28, 2024 · Parallel testing with Playwright is an excellent way to enhance your test automation suite's speed and efficiency. By leveraging Playwright's multi-browser support, headless execution, and easy configuration for parallel testing, you can significantly reduce the time taken to run your tests.

Mar 20, 2024 · Parallelism in Playwright refers to running multiple test spec files or even test cases within a spec file simultaneously, greatly improving test execution speed. This is achieved by running the tests in worker processes, where each worker process is an OS process, running independently, orchestrated by the test runner.

Playwright Test runs tests in parallel. In order to achieve that, it runs several worker processes that run at the same time. By default, test files are run in parallel.

Feb 9, 2023 · By default, Playwright runs your tests in parallel. It uses many worker processes at the same time. But you have different solutions to handle or remove parallelism in Playwright. Test files are in parallel, and each file is executed in order, from the first test to the last one. This is the default configuration