How to test the type of a thrown exception in Jest

by

I’m working with some code where I need to test the type of an exception thrown by a function (is it TypeError, ReferenceError, etc.?).

My current testing framework is AVA and I can test it as a second argument t.throws method, like here:

it('should throw Error with message \'UNKNOWN ERROR\' when no params were passed', (t) => {
  const error = t.throws(() => {
    throwError();
  }, TypeError);

  t.is(error.message, 'UNKNOWN ERROR');
});

I started rewriting my tests in Jest and couldn’t find how to easily do that. Is it even possible?

16 Answers
16

Leave a Comment