晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //opt/cpanel/ea-php83/root/usr/share/tests/pear/Structures_Graph/tests/TopologicalSorterTest.php
<?php
require_once dirname(__FILE__) . '/helper.inc';
require_once 'Structures/Graph/Manipulator/TopologicalSorter.php';

class TopologicalSorterTest extends \PHPUnit\Framework\TestCase
{
    public function testSort()
    {
        $graph = new Structures_Graph();

        $name1 = 'node1';
        $node1 = new Structures_Graph_Node();
        $node1->setData($name1);
        $graph->addNode($node1);

        $name11 = 'node11';
        $node11 = new Structures_Graph_Node();
        $node11->setData($name11);
        $graph->addNode($node11);
        $node1->connectTo($node11);

        $name12 = 'node12';
        $node12 = new Structures_Graph_Node();
        $node12->setData($name12);
        $graph->addNode($node12);
        $node1->connectTo($node12);

        $name121 = 'node121';
        $node121 = new Structures_Graph_Node();
        $node121->setData($name121);
        $graph->addNode($node121);
        $node12->connectTo($node121);

        $name2 = 'node2';
        $node2 = new Structures_Graph_Node();
        $node2->setData($name2);
        $graph->addNode($node2);

        $name21 = 'node21';
        $node21 = new Structures_Graph_Node();
        $node21->setData($name21);
        $graph->addNode($node21);
        $node2->connectTo($node21);

        $nodes = Structures_Graph_Manipulator_TopologicalSorter::sort($graph);
        $this->assertCount(2, $nodes[0]);
        $this->assertEquals('node1', $nodes[0][0]->getData());
        $this->assertEquals('node2', $nodes[0][1]->getData());

        $this->assertCount(3, $nodes[1]);
        $this->assertEquals('node11', $nodes[1][0]->getData());
        $this->assertEquals('node12', $nodes[1][1]->getData());
        $this->assertEquals('node21', $nodes[1][2]->getData());

        $this->assertCount(1, $nodes[2]);
        $this->assertEquals('node121', $nodes[2][0]->getData());
    }
}
?>

haha - 2025