public void GetByName_TopicNameIsNull_ThrowsArgumentNullException()
{
// Arrange
ITopicService target = new TopicService(new Mock<IUnitOfWork>().Object, this._topicValidationMock.Object);
// Act and Assert
Assert.Throws<ArgumentNullException>(() => target.GetByName(null));
}
public void GetByName_TopicNameIsValid_ReturnsTopic()
{
// Arrange
Topic testTopic = new Topic { TopicId = 1, Name = "topic_name" };
// Arrange - mock topicRepository
Mock<ITopicRepository> topicRepositoryMock = new Mock<ITopicRepository>();
topicRepositoryMock.Setup(r => r.GetByName(testTopic.Name))
.Returns(testTopic);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.TopicRepository)
.Returns(topicRepositoryMock.Object);
// Arrange - create target
ITopicService target = new TopicService(unitOfWorkMock.Object, this._topicValidationMock.Object);
// Act
Topic topic = target.GetByName(testTopic.Name);
// Assert
Assert.AreSame(testTopic, topic);
}
public void GetByName_NonexistentTopicName_ReturnsNull()
{
// Arrange
string topicName = "nonexistent_topic_name";
// Arrange - mock topicRepository
Mock<ITopicRepository> topicRepositoryMock = new Mock<ITopicRepository>();
topicRepositoryMock.Setup(r => r.GetByName(topicName))
.Returns((Topic)null);
// Arrange - mock unitOfWork
Mock<IUnitOfWork> unitOfWorkMock = new Mock<IUnitOfWork>();
unitOfWorkMock.SetupGet(u => u.TopicRepository)
.Returns(topicRepositoryMock.Object);
// Arrange - create target
ITopicService target = new TopicService(unitOfWorkMock.Object, this._topicValidationMock.Object);
// Act
Topic topic = target.GetByName(topicName);
// Assert
Assert.IsNull(topic);
}
