@Test
public void testCopy() {

	StreamRecord<String> recNoTimestamp = new StreamRecord<String>("test");
	StreamRecord<String> recNoTimestampCopy = recNoTimestamp.copy("test");
	assertEquals(recNoTimestamp, recNoTimestampCopy);
	StreamRecord<String> recWithTimestamp = new StreamRecord<String>("test", 99);
	StreamRecord<String> recWithTimestampCopy = recWithTimestamp.copy("test");
	assertEquals(recWithTimestamp, recWithTimestampCopy);
}