public void IsWriteTest()
{
var arr = new FastArrayList <int>(5);
Assert.IsTrue(arr.IsEmpty);
Assert.AreEqual(5, arr.Size);
Assert.IsTrue(arr.IsAvailableWrite);
arr.Append(1);
arr.Prepend(2);
arr.Append(3);
arr.Append(4);
Assert.IsTrue(arr.IsAvailableWrite);
arr.Append(5);
Assert.IsFalse(arr.IsAvailableWrite);
arr.Append(5);
arr.Append(5);
arr.RemoveLast();
Assert.IsTrue(arr.IsAvailableWrite);
}