How to test the type of a thrown exception in Jest

Question

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

Answer 1

Jest has a method, toThrow(error), to test that a function throws when it is called.

So, in your case you should call it so:

expect(t).toThrowError(TypeError);

The documentation.