You can also define multiple scripts in your package.json file with the various grep expressions. Personally, I prefer to use the grep property via the command line, as it's easier to modify. Or you can also use the -grep-invert option or the grepInvert property to exclude tests that match the pattern. To define the grep pattern, you can use the -grep (or -g) flag via the command line or the grep property in the configuration file. Well, Playwright allows you to use the grep functionality to run specific tests using the test description. So what does this have to do with Playwright? In other words, it's a tool that allows you to efficiently search for a text using a regex. You can run smoke tests that only perform read actions during a production release.įor those who are not very familiar with grep (short for global regular expression print), it's a powerful Unix-like command-line utility for searching plain-text data sets for lines that match a regular expression.QA or a feature team) can only run the tests that they are responsible for. You can run your whole test suite at night without disturbing your team, and only run a subset of your tests on a pull request to keep your CI pipeline(s) fast and efficient.The biggest advantage of properly organizing your tests by using tags is that you can specifically target test cases that are required to execute. In this blog post, we'll discuss at how we can utilize the grep functionality to run a subset of your test cases within Playwright. $ grep -E 'ap les' fruits.As your test suite grows, you might want to run a subset of your tests.Įven though Playwright can run tests in parallel, at some point, it might be a good idea to split your tests into smaller groups. Let’s use the symbol for one or more matches. Some of these quantifiers include: Quantifier These refer to metacharacters that specify the number of match appearances. Here the alternation operator ( |) in the regular expression 'warning\|error' allows for alternative matches, enabling the command to search for either 'warning' or 'error' in the log files. $ sudo grep -l ‘warning\|error’ /var/log/*.log You’ll need to use the escaped pipe character (\|) to do so.įor example, you can search for the words “warning” and “error” in log files by running the following command. AlternationĪlternation is the simple means to define alternative matches. Similarly, you can use the ^ and $ signs without escaping them. Searches for lines in the file fruits.txt that contain the pattern 'ap les', where the letter 'a' is followed by one or more occurrences of the letter 'p', and then the letters 'les'
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