import toast, { instance } from '~/vue_shared/plugins/global_toast'; describe('Global toast', () => { let spyFunc; beforeEach(() => { spyFunc = jest.spyOn(instance.$toast, 'show').mockImplementation(() => {}); }); afterEach(() => { spyFunc.mockRestore(); }); it("should call GitLab UI's toast method", () => { const arg1 = 'TestMessage'; const arg2 = { className: 'foo' }; toast(arg1, arg2); expect(instance.$toast.show).toHaveBeenCalledTimes(1); expect(instance.$toast.show).toHaveBeenCalledWith(arg1, arg2); }); });