silverstripe-framework/tests/integration/GeoipTest.php

<?php

class GeoipTest extends SapphireTest {
	
	function testSetDefaultCountry() {
		Geoip::set_default_country_code('DE');
		Geoip::set_enabled(false);
		
		$this->assertEquals('DE', Geoip::visitor_country());
		$this->assertEquals('DE', Geoip::get_default_country_code());
	}
}