Javascript-related Information

Debugging Cypress tests

You can run Cypress tests interactively. I.e. the browser will open up and you can interact with it. Use the tools/js/run_cypress_test_interactively.sh script for this.

$ ./tools/js/run_cypress_test_interactively.sh //path/to:test
(opens Chrome and runs tests)

All arguments to the script are passed to bazel test. So you can specify -c opt and other bazel options.

Pausing execution

Use cy.pause() to pause execution. Resume by hitting the green "Play" icon near the top left.

Pausing can be helpful when you're trying to understand more about the state of the web page in the middle of a test.

Getting console.log() output

Add --test_env=DEBUG=cypress:launcher:browsers to your test execution. Cypress will then log Chrome's output. Among which will be all console.log() statements.