status = datapoint._copy(outValue, in_string_value);
Assert.assertEquals(0, status);
Assert.assertTrue(outValue.charValue().compareTo("") == 0);
// copy string to string (value = "Test")
outValue.charValue("test");
in_string_value.charValue("Test");
status = datapoint._copy(outValue, in_string_value);
Assert.assertEquals(1, status);
Assert.assertTrue(outValue.charValue().compareTo("Test") == 0);
// copy string to string (value = "Test", the same value)
outValue.charValue("Test");