public void to_uri()
{
Assert.Throws <ArgumentNullException>(() => StringExtensions.ToUri(null));
Assert.Throws <ArgumentException>(() => string.Empty.ToUri());
const string Invalid = "invalid";
const string Uri = "http://yandex.ru";
Assert.Equal(new Uri(Uri), Uri.ToUri());
Assert.Throws <UriFormatException>(() => Invalid.ToUri());
}
