�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` addNode($node1); $node2 = new Structures_Graph_Node(); $graph->addNode($node2); $node1->connectTo($node2); $node3 = new Structures_Graph_Node(); $graph->addNode($node3); $node2->connectTo($node3); $node3->connectTo($node1); $this->assertFalse( Structures_Graph_Manipulator_AcyclicTest::isAcyclic($graph), 'Graph is cyclic' ); } public function testIsAcyclicTrue() { $graph = new Structures_Graph(); $node1 = new Structures_Graph_Node(); $graph->addNode($node1); $node2 = new Structures_Graph_Node(); $graph->addNode($node2); $node1->connectTo($node2); $node3 = new Structures_Graph_Node(); $graph->addNode($node3); $node2->connectTo($node3); $this->assertTrue( Structures_Graph_Manipulator_AcyclicTest::isAcyclic($graph), 'Graph is acyclic' ); } } ?>