### Question:
QueryOnDataChange extends AndroidDatabaseQuery<R> { @Override protected ArgumentsValidator createArgumentsValidator() { return new OnDataValidator(); } QueryOnDataChange(Database databaseDistribution, String databasePath);   }### Answer:
@Test public void createArgumentsValidator() { Database databaseDistribution = Mockito.mock(Database.class); QueryOnDataChange queryOnDataChange = new QueryOnDataChange(databaseDistribution, "/test"); ArgumentsValidator argumentsValidator = queryOnDataChange.createArgumentsValidator(); Assert.assertNotNull(argumentsValidator); Assert.assertTrue(argumentsValidator instanceof OnDataValidator); }