public void Invoke_SaveChanges_When_UserFollowee_Exists()
{
//Arrange
var fakeUnit = new Mock <IUnitOfWork>();
var fakeDateTimeProvider = Mock.Of <IDateTimeProvider>();
var fakeFolloweeService = new Mock <IFolloweeService>();
var fakeUserFolloweeRepo = new Mock <IGenericRepository <UserFollowee> >();
var sut = new UserFolloweeService(fakeUnit.Object, fakeFolloweeService.Object, fakeDateTimeProvider);
var userFollowee = new UserFollowee {
UserId = "123", FolloweeId = "456"
};
var userFolloweeCollection = new List <UserFollowee> {
userFollowee
};
fakeUserFolloweeRepo.Setup(s => s.All).Returns(userFolloweeCollection.AsQueryable);
fakeUnit.Setup(u => u.UserFollowees).Returns(fakeUserFolloweeRepo.Object);
fakeUnit.Setup(s => s.SaveChanges()).Verifiable();
//Act
sut.DeleteUserFollowee(userFollowee.UserId, userFollowee.FolloweeId);
//Assert
fakeUnit.Verify(v => v.SaveChanges(), Times.Once);
}
public void Throw_Argument_Null_Exception_When_FolloweeId_Is_Null()
{
//Arrange
var fakeUnit = Mock.Of <IUnitOfWork>();
var fakeDateTimeProvider = Mock.Of <IDateTimeProvider>();
var fakeFolloweeService = Mock.Of <IFolloweeService>();
var sut = new UserFolloweeService(fakeUnit, fakeFolloweeService, fakeDateTimeProvider);
//Act & Assert
Assert.ThrowsException <ArgumentNullException>(() => sut.DeleteUserFollowee("123", null));
}