public async void CancelPartnerPromoCodeLimitAsync_PartnerIsNotFound_ReturnsNotFound() { // Arrange var partnerId = Guid.Parse("def47943-7aaf-44a1-ae21-05aa4948b165"); Partner partner = null; _partnersRepositoryMock.Setup(repo => repo.GetByIdAsync(partnerId)).ReturnsAsync(partner); // Act var result = await _partnersController.CancelPartnerPromoCodeLimitAsync(partnerId); // Assert result.Should().BeAssignableTo <NotFoundResult>(); }