### Question:
ClassAndField_IdKeyMarshaller implements TypeMarshaller<ClassAndField_IdKey> { @Override public ClassAndField_IdKey fromBytes(byte[] bytes) throws Exception { return fromLexBytes(bytes); } ClassAndField_IdKeyMarshaller(); @Override ClassAndField_IdKey fromBytes(byte[] bytes); @Override byte[] toBytes(ClassAndField_IdKey t); @Override ClassAndField_IdKey fromLexBytes(byte[] lexBytes); @Override byte[] toLexBytes(ClassAndField_IdKey key);  }### Answer:
@Test(dataProviderClass = MarshallerTestDataProvider.class, dataProvider = "createBytes") public void testMarshallerBadInput(byte[] differentTypeBytes, String className) throws Exception { ClassAndField_IdKeyMarshaller marshaller = new ClassAndField_IdKeyMarshaller(); boolean caughtException = false; try { ClassAndField_IdKey obj2 = marshaller.fromBytes(differentTypeBytes); System.out.println("after ClassAndField_IdKeyMarshaller: =" + obj2.toString()); } catch (Exception e) { caughtException = true; } Assert.assertEquals(caughtException, !className.equals(ClassAndField_IdKey.class.getSimpleName())); }