public async Task GetPackageByIdTest() { //Arrange var id = 14; var package = new Package { Id = id }; _packageRepositoryMock.Setup(x => x.GetPackageById(It.IsAny <int>())).ReturnsAsync(package); //Act var controller = new PackagesController(_packageRepositoryMock.Object); var result = await controller.GetPackageById(id); //Assert Assert.NotNull(result); }