public void MakeRelative_Valid_Success(string filePath, string directoryPath)
{
// Act
var relativePath = LibraryCatalog.MakeRelative(filePath, directoryPath);
// Assert
Assert.Equal(@"2006", relativePath);
}
public void MakeRelative_Invalid_Exception(string filePath, string directoryPath)
{
Assert.Throws <ArgumentException>(
() => LibraryCatalog.MakeRelative(filePath, directoryPath));
}