opts.unSetJNDIContextProviderURL();
Assert.assertNull(opts.getJNDIContextProviderURL());
opts.setRealDataSource("fooDS");
Assert.assertEquals("fooDS", opts.getRealDataSource());
opts.unSetRealDataSource();
Assert.assertNull(opts.getRealDataSource());
opts.setRealDataSourceClass("fooDSClass");
Assert.assertEquals("fooDSClass", opts.getRealDataSourceClass());
opts.unSetRealDataSourceClass();