public void Create_UserIdIsLessOrEqualToZero_ThrowsArgumentOutOfRangeException()
{
// Arrange
int articleId = 1;
string commentText = "comment_text";
ICommentService target = new CommentService(new Mock<IUnitOfWork>().Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act and Assert
Assert.Throws<ArgumentOutOfRangeException>(() => target.Create(-1, articleId, commentText));
Assert.Throws<ArgumentOutOfRangeException>(() => target.Create(0, articleId, commentText));
}
public void Create_CommentTextIsNull_ThrowsArgumentNullException()
{
// Arrange
int userId = 1;
int articleId = 2;
ICommentService target = new CommentService(new Mock<IUnitOfWork>().Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act and Assert
Assert.Throws<ArgumentNullException>(() => target.Create(userId, articleId, null));
}
public void Create_NonexistentUserId_ThrowsUserNotFoundException()
{
// Arrange
int userId = 1;
int articleId = 2;
string commentText = "comment_text";
// Arrange - mock userRepository
Mock<IUserRepository> userRepositoryMock = new Mock<IUserRepository>();
userRepositoryMock.Setup(r => r.GetById(userId))
.Returns((User)null);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.UserRepository)
.Returns(userRepositoryMock.Object);
// Arrange - create target
ICommentService target = new CommentService(unitOfWorkMock.Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act and Assert
Assert.Throws<UserNotFoundException>(() => target.Create(userId, articleId, commentText));
userRepositoryMock.Verify(r => r.GetById(userId), Times.Once);
}
public void Create_AllCredentialsAreValid_CreatesAndReturnsComment()
{
// Arrange
User user = new User { UserId = 1 };
Article article = new Article { ArticleId = 2 };
string commentText = "comment_text";
string validatedCommentText = "validated_comment_text";
// Arrange - mock userRepository
Mock<IUserRepository> userRepositoryMock = new Mock<IUserRepository>();
userRepositoryMock.Setup(r => r.GetById(user.UserId))
.Returns(user);
// Arrange - mock articleRepository
Mock<IArticleRepository> articleRepositoryMock = new Mock<IArticleRepository>();
articleRepositoryMock.Setup(r => r.GetById(article.ArticleId))
.Returns(article);
// Arrange - mock commentRepository
Mock<ICommentRepository> commentRepositoryMock = new Mock<ICommentRepository>();
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.UserRepository)
.Returns(userRepositoryMock.Object);
unitOfWorkMock.SetupGet(u => u.ArticleRepository)
.Returns(articleRepositoryMock.Object);
unitOfWorkMock.SetupGet(u => u.CommentRepository)
.Returns(commentRepositoryMock.Object);
// Arrange - mock commentValidation
this._commentValidationMock.Setup(v => v.ValidateCommentText(commentText))
.Returns(validatedCommentText);
// Arrange - create target
ICommentService target = new CommentService(unitOfWorkMock.Object, this._commentValidationMock.Object,
this._serviceSettings);
// Act
Comment comment = target.Create(user.UserId, article.ArticleId, commentText);
// Assert
Assert.IsNotNull(comment);
Assert.AreEqual(user.UserId, comment.UserId);
Assert.AreEqual(article.ArticleId, comment.ArticleId);
Assert.AreEqual(validatedCommentText, comment.Text);
Assert.IsTrue(new DateTime() != comment.Date);
userRepositoryMock.Verify(r => r.GetById(user.UserId), Times.Once);
articleRepositoryMock.Verify(r => r.GetById(article.ArticleId), Times.Once);
commentRepositoryMock.Verify(
r =>
r.Insert(
It.Is<Comment>(c => c.UserId == user.UserId && c.ArticleId == article.ArticleId && c.Text == validatedCommentText)),
Times.Once);
unitOfWorkMock.Verify(u => u.Save(), Times.Once);
this._commentValidationMock.Verify(v => v.ValidateCommentText(commentText), Times.Once);
}
