public void shouldCopyUsingToArray()
{
var testee = new CircularQueue<int>(new[] { 1, 2, 3, 4 });
testee.Cycle();
testee.Cycle();
var expected = new[] { 3, 4, 1, 2 };
var actual = testee.ToArray();
Assert.IsTrue(actual.SequenceEqual(expected), actual.PrintContentsToString(", "));
}