public void Edit_TagNameIsNull_ThrowsArgumentNullException()
{
// Arrange
int tagId = 1;
ITagService target = new TagService(new Mock<IUnitOfWork>().Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<ArgumentNullException>(() => target.Edit(tagId, null));
}
public void Edit_TagNameFormatIsInvalid_ThrowsInvalidTagNameFormatException()
{
// Arrange
int tagId = 1;
string newTagName = "invalid_new_tag_name";
// Arrange - mock tagValidation
this._tagValidationMock.Setup(v => v.IsValidName(newTagName))
.Returns(false);
// Arrange - create target
ITagService target = new TagService(new Mock<IUnitOfWork>().Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<InvalidTagNameFormatException>(() => target.Edit(tagId, newTagName));
this._tagValidationMock.Verify(v => v.IsValidName(newTagName), Times.Once);
}
public void Edit_NonexistentTagId_ThrowsTagNotFoundException()
{
// Arrange
int tagId = 1;
string newTagName = "new_tag_name";
// Arrange - mock tagRepository
Mock<ITagRepository> tagRepositoryMock = new Mock<ITagRepository>();
tagRepositoryMock.Setup(r => r.GetByName(newTagName))
.Returns((Tag)null);
tagRepositoryMock.Setup(r => r.GetById(tagId))
.Returns((Tag)null);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.TagRepository)
.Returns(tagRepositoryMock.Object);
ITagService target = new TagService(unitOfWorkMock.Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<TagNotFoundException>(() => target.Edit(tagId, newTagName));
tagRepositoryMock.Verify(r => r.GetByName(newTagName), Times.Once);
tagRepositoryMock.Verify(r => r.GetById(tagId), Times.Once);
tagRepositoryMock.Verify(r => r.Update(It.Is<Tag>(t => t.TagId == tagId)), Times.Never);
unitOfWorkMock.Verify(r => r.Save(), Times.Never);
}
public void Edit_TagIdIsLessOrEqualToZero_ThrowsArgumentOutOfRangeException()
{
// Arrange
string newTagName = "new_tag_name";
ITagService target = new TagService(new Mock<IUnitOfWork>().Object, this._tagValidationMock.Object);
// Act and Assert
Assert.Throws<ArgumentOutOfRangeException>(() => target.Edit(-1, newTagName));
Assert.Throws<ArgumentOutOfRangeException>(() => target.Edit(0, newTagName));
}
public void Edit_AllCredentialsAreValid_EditsTag()
{
// Arrange
Tag tag = new Tag { TagId = 1 };
string newTagName = "new_tag_name";
// Arrange - mock tagRepository
Mock<ITagRepository> tagRepositoryMock = new Mock<ITagRepository>();
tagRepositoryMock.Setup(r => r.GetById(tag.TagId))
.Returns(tag);
tagRepositoryMock.Setup(r => r.GetByName(newTagName))
.Returns((Tag)null);
Tag editedTag = null;
tagRepositoryMock.Setup(r => r.Update(It.Is<Tag>(t => t.TagId == tag.TagId)))
.Callback((Tag t) => editedTag = t);
// 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
target.Edit(tag.TagId, newTagName);
// Assert
Assert.IsNotNull(editedTag);
Assert.AreEqual(newTagName, editedTag.Name);
tagRepositoryMock.Verify(r => r.GetById(tag.TagId), Times.Once);
tagRepositoryMock.Verify(r => r.GetByName(newTagName), Times.Once);
tagRepositoryMock.Verify(r => r.Update(It.Is<Tag>(t => t.TagId == tag.TagId)), Times.Once);
unitOfWorkMock.Verify(r => r.Save(), Times.Once);
}