function test_get_subjects_where_literal_no_match_on_object()
{
$g = new SimpleGraph();
$g->add_literal_triple('http://example.org/subj1', 'http://example.org/pred', 'http://example.org/obj1');
$subjects = $g->get_subjects_where_literal('http://example.org/pred', 'http://example.org/obj_foo');
$this->assertTrue(empty($subjects), 'The returned subjects should be empty');
}
