public void ReturnsCorrectStringForDirectoryPath(string path, string expected)
{
// Given
MetadataDictionary initialMetadata = new MetadataDictionary();
MetadataStack metadata = new MetadataStack(initialMetadata);
// When
metadata = metadata.Clone(new[] { new KeyValuePair<string, object>("A", new DirectoryPath(path)) });
object result = metadata.String("A");
// Then
Assert.IsInstanceOf<string>(result);
Assert.AreEqual(expected, result);
}