public void Create_TagNameAlreadyExists_ThrowsTagNameAlreadyExistsException()
{
// Arrange
string tagName = "tag_name";
Tag tag = new Tag { TagId = 1, Name = tagName };
// Arrange - mock tagRepository
Mock<ITagRepository> tagRepositoryMock = new Mock<ITagRepository>();
tagRepositoryMock.Setup(r => r.GetByName(tagName))
.Returns(tag);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.TagRepository)
.Returns(tagRepositoryMock.Object);
// Arrange - create target
ITagService target = new TagService(unitOfWorkMock.Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<TagNameAlreadyExistsException>(() => target.Create(tagName));
tagRepositoryMock.Verify(r => r.GetByName(tagName), Times.Once);
tagRepositoryMock.Verify(r => r.Insert(It.Is<Tag>(t => t.Name == tagName)), Times.Never);
unitOfWorkMock.Verify(r => r.Save(), Times.Never);
}
public void Create_TagNameIsEmpty_ThrowsArgumentException()
{
// Arrange
ITagService target = new TagService(new Mock<IUnitOfWork>().Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<ArgumentException>(() => target.Create(""));
}
public void Create_TagNameFormatIsInvalid_ThrowsInvalidTagNameFormatException()
{
// Arrange
string tagName = "invalid_tag_name";
this._tagValidationMock.Setup(v => v.IsValidName(tagName))
.Returns(false);
ITagService target = new TagService(new Mock<IUnitOfWork>().Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<InvalidTagNameFormatException>(() => target.Create(tagName));
this._tagValidationMock.Verify(v => v.IsValidName(tagName), Times.Once);
}
public void Create_TagNameIsValid_CreatesTag()
{
// Arrange
string tagName = "tag_name";
// Arrange - mock tagRepository
Mock<ITagRepository> tagRepositoryMock = new Mock<ITagRepository>();
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.TagRepository)
.Returns(tagRepositoryMock.Object);
// Arrange - create target
ITagService target = new TagService(unitOfWorkMock.Object, this._tagValidationMock.Object);
// Act
Tag createdTag = target.Create(tagName);
// Assert
Assert.IsNotNull(createdTag);
Assert.AreEqual(tagName, createdTag.Name);
tagRepositoryMock.Verify(r => r.Insert(It.Is<Tag>(t => t.Name == tagName)), Times.Once);
unitOfWorkMock.Verify(r => r.Save(), Times.Once);
}