Untitled Publication

Untitled Publication

Untitled Publication

Untitled Publication
2 posts
Mocking console.log with jest
describe("outer", () => { describe("inner", () => { let spy: jest.SpyInstance; beforeAll(() => { spy = jest.spyOn(global.console, "log").mockImplementation(); }); afterAll(() => { spy.mockRestore(); }); it("do...
Jun 6, 20211 min read
Using jest toThrow with async / await
Instead of it("doesn't work", async () => { const fn = async () => { throw new Error(); }; expect(await fn()).toThrow(); }); Use it("does work", async () => { const fn = async () => { throw new Error(); }; await expect(fn()).r...
Jun 6, 20211 min read