Exclude Specific Test Suites in playwright-jest with Ease

Discover how to configure `playwright-jest` to exclude specific test suite files effectively using regex and command line arguments.
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How to Exclude Specific Test Suites in playwright-jest

If you're working with a robust playwright-jest setup, you might find yourself needing to skip certain test suites while still running others. Whether it's a file that needs to stay in your repository but isn't ready for testing, or just an old suite that you want to temporarily disable, understanding how to exclude files can enhance your workflow and save valuable time. In this guide, we'll explore a simple yet effective method using regular expressions (regex) to exclude specific test files from your test runs.

The Challenge

You might have experienced the following scenario:

You've set up multiple test specs in your directory for your project.

Occasionally, you need to skip one or more test suites for various reasons.

Moving or modifying the files isn't a feasible option, and manual changes (like adding describe.skip()) before every run can be cumbersome.

So how can you easily exclude certain files from being executed while using jest with playwright without modifying your actual code?

The Solution

Fortunately, jest allows for flexible configurations. Here’s how you can exclude specific test suite files using regex in your package.json file.

Step-by-Step Instructions

Update Your Package.json Script:

You need to modify the existing test script in your package.json file. This involves adding a custom script to handle exclusion based on file name patterns.

Example configuration:

[[See Video to Reveal this Text or Code Snippet]]

Understanding the Regex Pattern:

The key part here is the regex pattern ^((?!BVT).)*$. Here's how this works:

^ asserts the start of a string.

((?!BVT).)* is a negative lookahead that matches any character sequence that does not contain the word "BVT".

$ asserts the end of the string.

This pattern ensures that any file containing "BVT" in its name will be excluded from the test run.

Running the Test Exclusion Command:

Now, to run your tests while excluding any file with "BVT" in its name, simply run the command:

[[See Video to Reveal this Text or Code Snippet]]

Benefits of This Approach

No Code Modifications Required: Unlike using describe.skip(), this method allows you to keep your test suite intact without altering the source code each time.

Easily Maintainable: You can adapt or change the regex as needed, and it can easily accommodate additional exclusions with minor adjustments.

Fast Test Runs: By running only the necessary test suites, you can speed up your testing process, allowing for quicker development cycles.

Conclusion

Excluding specific test suites in a playwright-jest setup can be efficiently handled using a regex pattern in your package.json scripts. This method alleviates the need for code changes and offers a quick solution to streamline your testing process. Next time you find yourself needing to skip tests, give this regex approach a try — it's sure to enhance your workflow!

Now that you're equipped with this handy trick, feel free to share this guide with fellow developers who might benefit from it. Your feedback and thoughts are always welcome in the comments. Happy testing!

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