public void AddRegionAsync_ReturnsCorrect() { // Arrange _mapper .Setup(x => x.Map <RegionDTO, Region>(It.IsAny <RegionDTO>())).Returns(fakeRegion); _repoWrapper .Setup(x => x.Region.CreateAsync(fakeRegion)); _repoWrapper .Setup(x => x.SaveAsync()); // Act var result = _regionService.AddRegionAsync(fakeRegionDTO); // Assert _repoWrapper.Verify(); Assert.NotNull(result); }