public void TestAngle()
{
// should support angle
Transformation transformation = new Transformation().Angle(12);
String result = m_api.UrlImgUp.Transform(transformation).BuildUrl("test");
Assert.AreEqual(m_defaultImgUpPath + "a_12/test", result);
transformation = new Transformation().Angle("exif", "12");
result = m_api.UrlImgUp.Transform(transformation).BuildUrl("test");
Assert.AreEqual(m_defaultImgUpPath + "a_exif.12/test", result);
}