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<?php
/**
 * SemanticScuttle - your social bookmark manager.
 *
 * PHP version 5.
 *
 * @category Bookmarking
 * @package  SemanticScuttle
 * @author   Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net>
 * @author   Christian Weiske <cweiske@cweiske.de>
 * @author   Eric Dane <ericdane@users.sourceforge.net>
 * @license  GPL http://www.gnu.org/licenses/gpl.html
 * @link     http://sourceforge.net/projects/semanticscuttle
 */

require_once 'prepare.php';

if (!defined('PHPUnit_MAIN_METHOD')) {
    define('PHPUnit_MAIN_METHOD', 'TagsCacheTest::main');
}

/**
 * Unit tests for the SemanticScuttle tags cache service.
 *
 * @category Bookmarking
 * @package  SemanticScuttle
 * @author   Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net>
 * @author   Christian Weiske <cweiske@cweiske.de>
 * @author   Eric Dane <ericdane@users.sourceforge.net>
 * @license  GPL http://www.gnu.org/licenses/gpl.html
 * @link     http://sourceforge.net/projects/semanticscuttle
 */
class TagsCacheTest extends PHPUnit_Framework_TestCase
{
    protected $us;
    protected $bs;
    protected $b2ts;
    protected $tts;



    /**
     * Used to run this test class standalone
     *
     * @return void
     */
    public static function main()
    {
        require_once 'PHPUnit/TextUI/TestRunner.php';
        PHPUnit_TextUI_TestRunner::run(
            new PHPUnit_Framework_TestSuite(__CLASS__)
        );
    }

    protected function setUp()
    {
        $this->us =SemanticScuttle_Service_Factory::get('User');
        $this->bs =SemanticScuttle_Service_Factory::get('Bookmark');
        $this->bs->deleteAll();
        $this->b2ts =SemanticScuttle_Service_Factory::get('Bookmark2Tag');
        $this->b2ts->deleteAll();
        $this->tts =SemanticScuttle_Service_Factory::get('Tag2Tag');
        $this->tts->deleteAll();
        $this->tsts =SemanticScuttle_Service_Factory::get('TagStat');
        $this->tsts->deleteAll();
        $this->tcs =SemanticScuttle_Service_Factory::get('TagCache');
        $this->tcs->deleteAll();
    }

    public function testInclusionAllowsToAddAndDeleteChildrenTags() {
        //message_die(GENERAL_ERROR, $GLOBALS['dbname'].'1');

        $tts = $this->tts;
        $tcs = $this->tcs;

        // test adding children
        $tcs->addChild('a', 'b', 1);
        $tcs->addChild('a', 'c', 1);
        $this->assertEquals(array('b','c'), $tcs->getChildren('a', 1));

        // test adding a same child
        $tcs->addChild('a', 'b', 1);
        $this->assertEquals(array('b','c'), $tcs->getChildren('a', 1));

        // test removing a child
        $tcs->removeChild('a', 'b', 1);
        $this->assertEquals(array('c'), $tcs->getChildren('a', 1));

        // test removing a same child
        $tcs->removeChild('a', 'b', 1);
        $this->assertEquals(array('c'), $tcs->getChildren('a', 1));

        // test existing child
        $this->assertTrue($tcs->existsChild('a', 'c', 1));
        $this->assertTrue(!$tcs->existsChild('a', 'c', 2)); // wrong user
        $this->assertTrue(!$tcs->existsChild('a', 'b', 1)); // wrong child

        // test removing several children
        $tcs->addChild('e', 'f', 1);
        $tcs->addChild('e', 'g', 1);
        $tcs->addChild('e', 'h', 1);
        $tcs->removeChild('e', NULL, 1);

        $this->assertTrue(!$tcs->existsChild('e', 'f', 1));
        $this->assertTrue(!$tcs->existsChild('e', 'g', 1));
        $this->assertTrue(!$tcs->existsChild('e', 'h', 1));

    }

    public function testInclusionCacheIsUpdatedWhenATag2TagLinkIsCreatedOrRemoved() {
        $tts = $this->tts;
        $tcs = $this->tcs;

        // test inclusion without possible errors
        $tts->addLinkedTags('a', 'b', '>', 1);
        $tts->addLinkedTags('b', 'c', '>', 1);
        $tts->addLinkedTags('c', 'd', '>', 1);
        $tts->addLinkedTags('e', 'f', '>', 1);
        $tts->addLinkedTags('b', 'e', '>', 1);

        $this->assertSame(array('b','c','d','e','f'), $tts->getAllLinkedTags('a', '>', 1));
        $this->assertSame(array('c','d','e','f'), $tts->getAllLinkedTags('b', '>', 1));

        // test inclusion with deletion
        $tts->removeLinkedTags('b', 'c', '>', 1);
        $this->assertSame(array('b','e','f'), $tts->getAllLinkedTags('a', '>', 1));
        $this->assertSame(array('e','f'), $tts->getAllLinkedTags('b', '>', 1));
        $this->assertSame(array('d'), $tts->getAllLinkedTags('c', '>', 1));
        $this->assertSame(array('f'), $tts->getAllLinkedTags('e', '>', 1));

    }

    public function testInclusionResistsToTagCycles() {
        $tts = $this->tts;
        $tcs = $this->tcs;

        $tts->addLinkedTags('a', 'b', '>', 1);
        $tts->addLinkedTags('b', 'c', '>', 1);
        $tts->addLinkedTags('c', 'a', '>', 1); // creates cycle a>c>a

        $this->assertSame(array('b','c'), $tts->getAllLinkedTags('a', '>', 1));
        $this->assertSame(array('c', 'a'), $tts->getAllLinkedTags('b', '>', 1));
        $this->assertSame(array('a', 'b'), $tts->getAllLinkedTags('c', '>', 1));
    }

    public function testSynonymyAllowsToAddAndDeleteSynonyms() {
        $tts = $this->tts;
        $tcs = $this->tcs;

        // simple synonymy
        $tcs->addSynonym('a', 'b', 1);
        $tcs->addSynonym('a', 'c', 1);

        $this->assertEquals(array('b', 'c'), $tcs->getSynonyms('a', 1));
        $this->assertEquals(array('c', 'a'), $tcs->getSynonyms('b', 1));
        $this->assertEquals(array('b', 'a'), $tcs->getSynonyms('c', 1));

        //more advanced one 1
        $tcs->deleteByUser(1);
        $tcs->addSynonym('a', 'b', 1);
        $tcs->addSynonym('a', 'c', 1);
        $tcs->addSynonym('d', 'e', 1);
        $tcs->addSynonym('a', 'e', 1);
        $this->assertEquals(array('b', 'c', 'e', 'd'), $tcs->getSynonyms('a', 1));

        //more advanced one 2
        $tcs->deleteByUser(1);
        $tcs->addSynonym('a', 'b', 1);
        $tcs->addSynonym('a', 'c', 1);
        $tcs->addSynonym('d', 'e', 1);
        $tcs->addSynonym('a', 'd', 1);
        $this->assertEquals(array('b', 'c', 'd', 'e'), $tcs->getSynonyms('a', 1));

        //with Linked tags
        $tcs->deleteByUser(1);
        $tts->addLinkedTags('a', 'b', '=', 1);
        $tts->addLinkedTags('c', 'd', '=', 1);
        $tts->addLinkedTags('c', 'e', '=', 1);
        $tts->addLinkedTags('e', 'a', '=', 1);
        $this->assertEquals(array('b', 'e', 'c', 'd'), $tts->getAllLinkedTags('a', '=', 1));

    }

    public function testInclusionTakesSynonymsIntoAccount() {
        $tts = $this->tts;
        $tcs = $this->tcs;

        $tts->addLinkedTags('a', 'b', '>', 1);
        $tts->addLinkedTags('b', 'c', '>', 1);
        $tts->addLinkedTags('d', 'e', '>', 1);
        $tts->addLinkedTags('c', 'd', '=', 1);

        // results are put into cache
        $this->assertEquals(array('b', 'c', 'd', 'e'), $tts->getAllLinkedTags('a', '>', 1));
        $this->assertEquals(array('d', 'e'), $tts->getAllLinkedTags('c', '>', 1));

        // same results must be taken out from cache
        $this->assertEquals(array('b', 'c', 'd', 'e'), $tts->getAllLinkedTags('a', '>', 1));
        $this->assertEquals(array('d', 'e'), $tts->getAllLinkedTags('c', '>', 1));

        // check that result comes from cache (artificial changes in cache must appear in result)
        $tcs->removeChild('a', 'e', 1);
        $this->assertEquals(array('b', 'c', 'd'), $tts->getAllLinkedTags('a', '>', 1));

        //cache must be deleted for user when links are modified
        $tts->addLinkedTags('a', 'f', '=', 1);
        $this->assertEquals(array(), $tcs->getChildren('a', 1));
        $this->assertEquals(array(), $tcs->getSynonyms('d', 1));
    }
}

if (PHPUnit_MAIN_METHOD == 'TagsCacheTest::main') {
    TagsCacheTest::main();
}

?>