public void Format()
{
Assert.AreEqual("{ }", coll.ToString());
coll.AddAll(new int[] { -4, 28, 129, 65530 });
Assert.AreEqual("{ -4, 65530, 28, 129 }", coll.ToString());
Assert.AreEqual("{ -4, FFFA, 1C, 81 }", coll.ToString(null, rad16));
Assert.AreEqual("{ -4, 65530, ... }", coll.ToString("L14", null));
Assert.AreEqual("{ -4, FFFA, ... }", coll.ToString("L14", rad16));
}