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Youngho Chaa cha cha

Locate the failing tests quickly in Node.js project

node.js, jest1 min read

When I run tests for my Node.js API project, I often find that one or two tests fail due to changes I have made. However, there are many tests, and I have to scroll up a lot to find the failing test and run it again. Is there an easy way to see which test has failed?

Here are a few ways to see which test has failed:

  • Fail fast. npx jest --bail This will stop the test run when there’s a single test failure.
  • Run only failed tests again. For me, this was the easiest way to find out the failed test. npx jest --onlyFailures will do the charm.
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