public void AddVote_CommentIdIsLessOrEqualToZero_ThrowsArgumentOutOfRangeException()
{
// Arrange
int userId = 1;
bool voteIsPositive = true;
ICommentService target = new CommentService(new Mock<IUnitOfWork>().Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act and Assert
Assert.Throws<ArgumentOutOfRangeException>(() => target.AddVote(-1, userId, voteIsPositive));
Assert.Throws<ArgumentOutOfRangeException>(() => target.AddVote(0, userId, voteIsPositive));
}
public void AddVote_NonexistentCommentId_ThrowsCommentNotFoundException()
{
// Arrange
int commentId = 1;
int userId = 1;
bool voteIsPositive = true;
Expression<Func<Comment, object>>[] propertiesToInclude = { c => c.CommentVotes };
// Arrange - mock commentRepository
Mock<ICommentRepository> commentRepositoryMock = new Mock<ICommentRepository>();
commentRepositoryMock.Setup(
r =>
r.GetById(commentId,
It.Is<Expression<Func<Comment, object>>[]>(
selector => ExpressionHelper.AreExpressionArraysEqual(selector, propertiesToInclude))))
.Returns((Comment)null);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.CommentRepository)
.Returns(commentRepositoryMock.Object);
// Arrange - create target
ICommentService target = new CommentService(unitOfWorkMock.Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act and Assert
Assert.Throws<CommentNotFoundException>(() => target.AddVote(commentId, userId, voteIsPositive));
commentRepositoryMock.Verify(
r =>
r.GetById(commentId,
It.Is<Expression<Func<Comment, object>>[]>(
selector => ExpressionHelper.AreExpressionArraysEqual(selector, propertiesToInclude))), Times.Once);
commentRepositoryMock.Verify(r => r.Update(It.Is<Comment>(c => c.CommentId == commentId)), Times.Never);
unitOfWorkMock.Verify(r => r.Save(), Times.Never);
}
public void AddVote_UserHasVotedWithTheSameVoteType_DoNotUpdateTheVote()
{
// Arrange
int commentId = 1;
int userId = 1;
bool voteIsPositive = true;
Comment comment = new Comment
{
CommentId = commentId,
CommentVotes = { new CommentVote { CommentId = commentId, UserId = userId, IsPositive = voteIsPositive } }
};
Expression<Func<Comment, object>>[] propertiesToInclude = { c => c.CommentVotes };
// Arrange - mock commentRepository
Mock<ICommentRepository> commentRepositoryMock = new Mock<ICommentRepository>();
commentRepositoryMock.Setup(
r =>
r.GetById(commentId,
It.Is<Expression<Func<Comment, object>>[]>(
selector => ExpressionHelper.AreExpressionArraysEqual(selector, propertiesToInclude))))
.Returns(comment);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.CommentRepository)
.Returns(commentRepositoryMock.Object);
// Arrange - create target
ICommentService target = new CommentService(unitOfWorkMock.Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act
target.AddVote(commentId, userId, voteIsPositive);
// Assert
commentRepositoryMock.Verify(
r =>
r.GetById(commentId,
It.Is<Expression<Func<Comment, object>>[]>(
selector => ExpressionHelper.AreExpressionArraysEqual(selector, propertiesToInclude))), Times.Once);
commentRepositoryMock.Verify(r => r.Update(It.Is<Comment>(c => c.CommentId == commentId)), Times.Never);
unitOfWorkMock.Verify(r => r.Save(), Times.Never);
}
public void AddVote_UserHasVotedWithAnotherVoteType_EditsVote()
{
// Arrange
int commentId = 1;
int userId = 1;
bool voteIsPositive = true;
CommentVote[] commentVotes =
{
new CommentVote { CommentId = commentId, UserId = userId, IsPositive = !voteIsPositive },
new CommentVote { CommentId = commentId, UserId = userId + 1 },
new CommentVote { CommentId = commentId, UserId = userId + 2 }
};
Comment comment = new Comment { CommentId = commentId, CommentVotes = commentVotes.ToList() };
Expression<Func<Comment, object>>[] propertiesToInclude = { c => c.CommentVotes };
// Arrange - mock commentRepository
Mock<ICommentRepository> commentRepositoryMock = new Mock<ICommentRepository>();
commentRepositoryMock.Setup(
r =>
r.GetById(commentId,
It.Is<Expression<Func<Comment, object>>[]>(
selector => ExpressionHelper.AreExpressionArraysEqual(selector, propertiesToInclude))))
.Returns(comment);
IEnumerable<CommentVote> newCommentVotes = null;
commentRepositoryMock.Setup(r => r.Update(It.Is<Comment>(c => c.CommentId == commentId)))
.Callback((Comment c) => newCommentVotes = c.CommentVotes);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.CommentRepository)
.Returns(commentRepositoryMock.Object);
// Arrange - create target
ICommentService target = new CommentService(unitOfWorkMock.Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act
target.AddVote(commentId, userId, voteIsPositive);
// Assert
Assert.IsNotNull(newCommentVotes);
Assert.AreEqual(commentVotes.Count(), newCommentVotes.Count());
CommentVote commentVote =
newCommentVotes.FirstOrDefault(
v => v.CommentId == commentId && v.UserId == userId && v.IsPositive == voteIsPositive);
Assert.IsNotNull(commentVote);
commentRepositoryMock.Verify(
r =>
r.GetById(commentId,
It.Is<Expression<Func<Comment, object>>[]>(
selector => ExpressionHelper.AreExpressionArraysEqual(selector, propertiesToInclude))), Times.Once);
commentRepositoryMock.Verify(r => r.Update(It.Is<Comment>(c => c.CommentId == commentId)), Times.Once);
unitOfWorkMock.Verify(r => r.Save(), Times.Once);
}
