public void ShouldBeAbleToEnumerateOverEnumerable_Typed()
{
// Arrange
var data = new[] { 1, 2, 3 };
var firstLayer = new MyEnumerable <int>(data);
var sut = new EnumerableWrapper <int>(firstLayer);
// Act
Expect(sut.IsValid).To.Be.True();
var result = sut.ToList();
// Assert
Expect(result).To.Equal(data);
}