public function testGetSubjectsWithPropertyValue()
{
$graph = new ExtendedGraph();
$graph->add_resource_triple('http://some/subject/1', 'http://some/predicate', 'http://value/1');
$graph->add_resource_triple('http://some/subject/2', 'http://some/predicate', 'http://value/2');
$graph->add_resource_triple('http://some/subject/3', 'http://some/predicate', 'http://value/3');
$graph->add_literal_triple('http://some/subject/2-with-literal', 'http://some/predicate', 'http://value/2');
$subjects = $graph->get_subjects_with_property_value('http://some/predicate', 'http://value/2');
$this->assertEquals($subjects, array('http://some/subject/2', 'http://some/subject/2-with-literal'), 'should have returned correct subject');
}
