public void GetPaymentByUid_Returns_PaymentDto() { // Arrange var uid = "uid"; var dbContextMock = _mocks.Create<IDatabaseContext>(); dbContextMock.Setup(m => m.GetByUid<PaymentDto>(uid)) .Returns(new PaymentDto()); var paymentBLL = new PaymentBLL(dbContextMock.Object, null); // Act var res = paymentBLL.GetPaymentByUid(uid); // Assert _mocks.Verify(); Assert.IsInstanceOfType(res, typeof(PaymentDto)); }