public void Insert_IntoZeroIndex()
{
var list = new LightweightList <int>();
for (int i = 0; i < 10; i++)
{
list.Insert(0, i);
}
Assert.Equal(16, list.Capacity);
Assert.Equal(16, list.GetInternalArray().Length);
Assert.Equal(10, list.Count);
Assert.Equal(10, list.AsSpan().Length);
var span = list.AsSpan();
var arr = list.GetInternalArray();
for (int i = 0; i < 10; i++)
{
Assert.Equal(9 - i, list[i]);
Assert.Equal(9 - i, span[i]);
Assert.Equal(9 - i, arr[i]);
}
}