public virtual void TestCopyTo()
{
CharTermAttribute t = new CharTermAttribute();
CharTermAttribute copy = TestToken.AssertCopyIsEqual(t);
Assert.AreEqual("", t.ToString());
Assert.AreEqual("", copy.ToString());
t = new CharTermAttribute();
char[] content = "hello".ToCharArray();
t.CopyBuffer(content, 0, 5);
char[] buf = t.Buffer;
copy = TestToken.AssertCopyIsEqual(t);
Assert.AreEqual(t.ToString(), copy.ToString());
Assert.AreNotSame(buf, copy.Buffer);
}