SubjectTest.php

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<?php
namespace enshrined\svgSanitize\Tests;

use enshrined\svgSanitize\ElementReference\Subject;
use PHPUnit\Framework\TestCase;

class SubjectTest extends TestCase
{
    protected $nestingLimit = 15;

    public function oneLevelCountsUseIsCorrect()
    {
        $first = new \DOMElement('first');
        $firstSubject = new Subject($first, $this->nestingLimit);
        self::assertSame(0, $firstSubject->countUse(false));
        self::assertSame(0, $firstSubject->countUse(true));
    }

    public function twoLevelsCountUseIsCorrect()
    {
        $first = new \DOMElement('first');
        $second = new \DOMElement('second');
        $firstSubject = new Subject($first, $this->nestingLimit);
        $secondSubject = new Subject($second, $this->nestingLimit);
        $firstSubject->addUse($secondSubject);
        $firstSubject->addUse($secondSubject);
        self::assertSame(2, $firstSubject->countUse(false));
        self::assertSame(2, $firstSubject->countUse(true));
    }

    public function threeLevelsCountUseIsCorrect()
    {
        $first = new \DOMElement('first');
        $second = new \DOMElement('second');
        $third = new \DOMElement('third');
        $firstSubject = new Subject($first, $this->nestingLimit);
        $secondSubject = new Subject($second, $this->nestingLimit);
        $thirdSubject = new Subject($third, $this->nestingLimit);
        $firstSubject->addUse($secondSubject);
        $firstSubject->addUse($secondSubject);
        $secondSubject->addUse($thirdSubject);
        $secondSubject->addUse($thirdSubject);
        $secondSubject->addUse($thirdSubject);
        self::assertSame(6, $firstSubject->countUse(false));
        self::assertSame(8, $firstSubject->countUse(true));
    }

    public function oneLevelCountsUsedInIsCorrect()
    {
        $first = new \DOMElement('first');
        $firstSubject = new Subject($first, $this->nestingLimit);
        self::assertSame(0, $firstSubject->countUsedIn());
    }

    public function twoLevelsCountUsedInIsCorrect()
    {
        $first = new \DOMElement('first');
        $second = new \DOMElement('second');
        $firstSubject = new Subject($first, $this->nestingLimit);
        $secondSubject = new Subject($second, $this->nestingLimit);
        $secondSubject->addUsedIn($firstSubject);
        $secondSubject->addUsedIn($firstSubject);
        self::assertSame(2, $secondSubject->countUsedIn());
    }

    public function threeLevelsCountUsedInIsCorrect()
    {
        $first = new \DOMElement('first');
        $second = new \DOMElement('second');
        $third = new \DOMElement('third');
        $firstSubject = new Subject($first, $this->nestingLimit);
        $secondSubject = new Subject($second, $this->nestingLimit);
        $thirdSubject = new Subject($third, $this->nestingLimit);
        $thirdSubject->addUsedIn($secondSubject);
        $thirdSubject->addUsedIn($secondSubject);
        $thirdSubject->addUsedIn($secondSubject);
        $secondSubject->addUsedIn($firstSubject);
        $secondSubject->addUsedIn($firstSubject);
        self::assertSame(6, $thirdSubject->countUsedIn());
    }
}