expect(mock).toBeCalledWith(expect.anything()) it("should return error", async () => { expect.assertions(1) try { await verifyJwt("string") } catch (err) { expect(err).toEqual({ name: "JsonWebTokenError", message: "jwt malformed", }) } }) expect(res).toEqual(matchers.payload_json()) payload_json: (): any => { return expect.objectContaining({ user_id: expect.any(String), email: expect.any(String), iat: expect.any(Number), exp: expect.any(Number), }) },