Jest threshold for a test to be reported as slow

Question

I use jest to drive selenium tests and it reports a test that takes 12 seconds as being slow (the duration is highlighted in red). In this context 12 seconds is fine.

How can I configure the threshold to 30 seconds?

Answer 1

Late 2020 update - previous answers are outdated

Configure the slowTestThreshold in seconds, as shown in the docs

// jest.config.js
module.exports = {
    /* ... */
    slowTestThreshold: 30,
    /* ... */
}

Answer 2

Jest is currently hard-coded to consider any test running over 5 seconds as long:

if (runTime !== null && runTime > 5) {
  testDetail.push(LONG_TEST_COLOR(runTime + 's'));
}

Looks like you would need to fork the repo or submit a PR if you wanted to change that.

Answer 3

Jest migrated from milliseconds to seconds

Jest allows configuration property slowTestThreshold which you can set in milliseconds.

Jest allows configuration property slowTestThreshold which you can set in seconds.

example jest.config.js

module.exports = async () => {
  return {
    slowTestThreshold: 30
  };
};

this will show error if tests run for more than 30 seconds