public void TestRemoveBorrowedBook()
{
var bookManagerMock = new Mock <IBookManager>();
bookManagerMock.Setup(m =>
m.GetBookByBookID(It.IsAny <int>()))
.Returns(new Book
{
BookID = 1,
Borrow = new Borrow
{
BorrowID = 1
}
});
bookManagerMock.Setup(m =>
m.RemoveBook(It.IsAny <Book>()));
var bookAPI = new BookAPI(bookManagerMock.Object, null);
var successfull = bookAPI.RemoveBookFromLibrary(1);
Assert.AreEqual(BookErrorCodes.BookBorrowed, successfull);
bookManagerMock.Verify(m =>
m.RemoveBook(It.IsAny <Book>()), Times.Never);
}