opts.unSetRealDataSource();
Assert.assertNull(opts.getRealDataSource());
opts.setRealDataSourceClass("fooDSClass");
Assert.assertEquals("fooDSClass", opts.getRealDataSourceClass());
opts.unSetRealDataSourceClass();
Assert.assertNull(opts.getRealDataSourceClass());
opts.setRealDataSourceProperties("fooDSProps");
Assert.assertEquals("fooDSProps", opts.getRealDataSourceProperties());
opts.unSetRealDataSourceProperties();