public void GetFieldsDeeply_WithNullSource_ThrowsArgumentNullException()
 {
     Assert.Throws <ArgumentNullException>(() => ReflectionExtensions.GetFieldsDeeply(null));
 }
 public void GetAttributesOfType_WithNullProvider_ThrowsArgumentNullException()
 {
     Assert.Throws <ArgumentNullException>(
         () => ReflectionExtensions.GetAttributesOfType <TestFixtureAttribute>(null));
 }