public void ICollectionCopyTo()
{
ICollection <byte> l = new Uint8Array(new byte[] { 0, 1, 2 });
var a1 = new byte[3];
l.CopyTo(a1, 0);
Assert.AreEqual(0, a1[0], "1.Element 0");
Assert.AreEqual(1, a1[1], "1.Element 1");
Assert.AreEqual(2, a1[2], "1.Element 2");
var a2 = new byte[5];
l.CopyTo(a2, 1);
Assert.AreEqual(0, a2[0], "2.Element 0");
Assert.AreEqual(0, a2[1], "2.Element 1");
Assert.AreEqual(1, a2[2], "2.Element 2");
Assert.AreEqual(2, a2[3], "2.Element 3");
Assert.AreEqual(0, a2[4], "2.Element 4");
Assert.Throws <ArgumentNullException>(() => { l.CopyTo(null, 0); }, "3.null");
var a3 = new byte[2];
Assert.Throws <ArgumentException>(() => { l.CopyTo(a3, 0); }, "3.Short array");
var a4 = new byte[3];
Assert.Throws <ArgumentException>(() => { l.CopyTo(a4, 1); }, "3.Start index 1");
Assert.Throws <ArgumentOutOfRangeException>(() => { l.CopyTo(a4, -1); }, "3.Negative start index");
Assert.Throws <ArgumentException>(() => { l.CopyTo(a4, 3); }, "3.Start index 3");
}