public void FindByISBN()
{
// Arrange
_daoMock
.Setup(mock => mock.Load(It.IsAny <string>()))
.Returns(DefaultBook());
// Act
var book = _bookManagerService.FindByISBN(NewGuid());
// Assert
Assert.Equal(ExistingISBN, book.ISBN);
_daoMock.Verify(mock => mock.Load(It.IsAny <string>()), Times.Once);
}
public SimpleBookDto Load(string id)
{
return(_bookManagerService.FindByISBN(id));
}