public void ToList_With_ValidData_Collections_Must_Succeed(int[] source)
        {
            // Arrange
            var wrapped = Wrap
                          .AsValueCollection(source);
            var expected = Enumerable
                           .ToList(source);

            // Act
            var result = ValueEnumerableExtensions
                         .ToList <Wrap.ValueCollectionWrapper <int>, Wrap.Enumerator <int>, int>(wrapped);

            // Assert
            _ = result.Must()
                .BeOfType <List <int> >()
                .BeEnumerableOf <int>()
                .BeEqualTo(expected);
        }