public void ShuffleMustWork(int count)
{
var arr = IEnumerableExtensions.Generate(count, () => Random.Next(-100, 100));
var result = arr.Shuffle(Random);
Assert.False(object.ReferenceEquals(arr, result));
Assert.Equal(arr.Count(), result.Count());
Assert.True(arr.SequenceEqualWithoutOrder(result));
Assert.False(arr.SequenceEqual(result));
}