public void Count_With_ValidData_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap
.AsReadOnlyList(source);
var expected = Enumerable
.Count(source);
// Act
var result = ReadOnlyListExtensions
.Count <Wrap.ReadOnlyListWrapper <int>, int>(wrapped);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}