public async Task AddBookAsyncTest()
{
// arrange
var mock = new Mock<IBooksRepository>();
var book = new Book
{
BookId = 0,
Title = "Test Title",
Publisher = "A Publisher"
};
var expectedBook = new Book
{
BookId = 1,
Title = "Test Title",
Publisher = "A Publisher"
};
mock.Setup(r => r.AddAsync(book)).ReturnsAsync(expectedBook);
var service = new BooksService(mock.Object);
// act
Book actualAdded = await service.AddOrUpdateBookAsync(book);
Book actualRetrieved = service.GetBook(actualAdded.BookId);
Book notExisting = service.GetBook(2);
// assert
Assert.Equal(expectedBook, actualAdded);
Assert.Equal(expectedBook, actualRetrieved);
Assert.Equal(null, notExisting);
}
public async Task UpdateBookAsyncTest()
{
// arrange
var mock = new Mock<IBooksRepository>();
var origBook = new Book
{
BookId = 0,
Title = "Title",
Publisher = "A Publisher"
};
var addedBook = new Book
{
BookId = 1,
Title = "Title",
Publisher = "A Publisher"
};
var updateBook = new Book
{
BookId = 1,
Title = "New Title",
Publisher = "A Publisher"
};
var notExisting = new Book
{
BookId = 99,
Title = "Not",
Publisher = "Not"
};
mock.Setup(r => r.UpdateAsync(updateBook)).ReturnsAsync(updateBook);
mock.Setup(r => r.UpdateAsync(notExisting)).ReturnsAsync(notExisting);
mock.Setup(r => r.UpdateAsync(origBook)).ReturnsAsync(addedBook);
var service = new BooksService(mock.Object);
// fill in first book to test update
await service.AddOrUpdateBookAsync(origBook);
// act
Book actualUpdated = await service.AddOrUpdateBookAsync(updateBook);
Book actualRetrieved = service.GetBook(1);
// assert
Assert.Equal(updateBook, actualUpdated);
Assert.Equal(updateBook, actualRetrieved);
await Assert.ThrowsAsync<InvalidOperationException>(async () =>
await service.AddOrUpdateBookAsync(notExisting));
await Assert.ThrowsAsync<ArgumentNullException>(async () =>
await service.AddOrUpdateBookAsync(null));
}