public void Invoke_SaveChanges_On_UnitOfWork_When_Found()
{
//Arrange
var fakeUnit = new Mock <IUnitOfWork>();
var fakeDateTimeProvider = Mock.Of <IDateTimeProvider>();
var fakeTweetService = Mock.Of <ITweetService>();
var sut = new UserTweetService(fakeUnit.Object, fakeTweetService, fakeDateTimeProvider);
var fakeUserTweetRepo = new Mock <IGenericRepository <UserTweet> >();
var userTweet = new UserTweet {
TweetId = "789", UserId = "123"
};
var userTweetCollection = new List <UserTweet> {
userTweet
};
fakeUserTweetRepo.Setup(r => r.All).Returns(userTweetCollection.AsQueryable());
fakeUnit.Setup(u => u.UserTweets).Returns(fakeUserTweetRepo.Object);
fakeUnit.Setup(s => s.SaveChanges()).Verifiable();
//Act
sut.DeleteUserTweet("123", "789");
//Assert
fakeUnit.Verify(v => v.SaveChanges(), Times.Once);
}
public void Throw_Argument_Null_Exception_When_TweetId_Is_Null()
{
//Arrange
var fakeTimeProvider = Mock.Of <IDateTimeProvider>();
var fakeUnit = Mock.Of <IUnitOfWork>();
var fakeTweetService = Mock.Of <ITweetService>();
var sut = new UserTweetService(fakeUnit, fakeTweetService, fakeTimeProvider);
//Act & Assert
Assert.ThrowsException <ArgumentNullException>(() => sut.DeleteUserTweet("123", null));
}