CODEWITHSUNDEEP
angularunit-testingjestjs
Volodymyr Khmil
Volodymyr Khmil

Reputation: 1244

Jest mock the window.open

How I can mock the window.open with jest? I tried several options but each of them is failed

I need to check if the window.open is called and it should be called with certain params

Assume that I have something like this

open(): void {
  window.open('/link');
}

Upvotes: 0

Views: 4376

Answers (1)

Archit Garg
Archit Garg

Reputation: 3277

Install these packages:

jest-environment-jsdom
jest-environment-jsdom-global

Add "testEnvironment": "jest-environment-jsdom-global" in your jest configurations.

Suppose you have a function like this:

open() {
  window.open("abc");
}

Then inside test file:

it("should open the url in window", () => {
  const openSpy =  jest.spyOn(window, "open");

  open();

  expect(openSpy).toHaveBeenCalledTimes(1);
  expect(openSpy).toHaveBeenCalledWith("abc");
});

Upvotes: 1

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