How to Expect an Exception in Jest

In order to test that an exception gets thrown, Jest uses the following syntax:

it("throws and exception", () => {
	expect(() => {
		throw new Error("My Error");
	}).toThrow(new Error("My Error");
});

Do be aware, when asserting the error message, empty strings are ignored, so the following are equivalent:

.toThrow();
.toThrow("");
.toThrow(new Error(""));

Adapted from: