			var buf = Encoding.ASCII.GetBytes("Hello");
			Assert.AreEqual(5, buf.Length);
			var buf16 = Encoding.Unicode.GetBytes("\u00abX");
			Assert.AreEqual(4, buf16.Length);
			var buf16be = Encoding.BigEndianUnicode.GetBytes("\u00abX");
			Assert.AreEqual(4, buf16be.Length);
			var buf32 = Encoding.UTF32.GetBytes("\u00abX");
			Assert.AreEqual(8, buf32.Length);
			var buf8 = Encoding.UTF8.GetBytes("\u00abX");
			Assert.AreEqual(3, buf8.Length);
			var buf7 = Encoding.UTF7.GetBytes("\u00abX");
			Assert.AreEqual(6, buf7.Length);

			string str;

