<?php

use PHPHtmlParser\Dom\MockNode as Node;

class NodeChildTest extends PHPUnit_Framework_TestCase {

    public function testGetParent()
    {
        $parent = new Node;
        $child  = new Node;
        $child->setParent($parent);
        $this->assertEquals($parent->id(), $child->getParent()->id());
    }

    public function testSetParentTwice()
    {
        $parent  = new Node;
        $parent2 = new Node;
        $child   = new Node;
        $child->setParent($parent);
        $child->setParent($parent2);
        $this->assertEquals($parent2->id(), $child->getParent()->id());
    }

    public function testNextSibling()
    {
        $parent = new Node;
        $child  = new Node;
        $child2 = new Node;
        $child->setParent($parent);
        $child2->setParent($parent);
        $this->assertEquals($child2->id(), $child->nextSibling()->id());
    }

    /**
     * @expectedException PHPHtmlParser\Exceptions\ChildNotFoundException
     */
    public function testNextSiblingNotFound()
    {
        $parent = new Node;
        $child  = new Node;
        $child->setParent($parent);
        $child->nextSibling();
    }

    /**
     * @expectedException PHPHtmlParser\Exceptions\ParentNotFoundException
     */
    public function testNextSiblingNoParent()
    {
        $child = new Node;
        $child->nextSibling();
    }

    public function testPreviousSibling()
    {
        $parent = new Node;
        $child  = new Node;
        $child2 = new Node;
        $child->setParent($parent);
        $child2->setParent($parent);
        $this->assertEquals($child->id(), $child2->previousSibling()->id());
    }

    /**
     * @expectedException PHPHtmlParser\Exceptions\ChildNotFoundException
     */
    public function testPreviousSiblingNotFound()
    {
        $parent = new Node;
        $node = new Node;
        $node->setParent($parent);
        $node->previousSibling();
    }

    /**
     * @expectedException PHPHtmlParser\Exceptions\ParentNotFoundException
     */
    public function testPreviousSiblingNoParent()
    {
        $child = new Node;
        $child->previousSibling();
    }

    public function testGetChildren()
    {
        $parent = new Node;
        $child  = new Node;
        $child2 = new Node;
        $child->setParent($parent);
        $child2->setParent($parent);
        $this->assertEquals($child->id(), $parent->getChildren()[0]->id());
    }

    public function testCountChildren()
    {
        $parent = new Node;
        $child  = new Node;
        $child2 = new Node;
        $child->setParent($parent);
        $child2->setParent($parent);
        $this->assertEquals(2, $parent->countChildren());
    }

    public function testIsChild ()
    {
        $parent = new Node;
        $child1 = new Node;
        $child2 = new Node;

        $child1->setParent($parent);
        $child2->setParent($child1);

        $this->assertTrue ($parent->isChild ($child1->id ()));
        $this->assertTrue ($parent->isDescendant ($child2->id ()));
        $this->assertFalse ($parent->isChild ($child2->id ()));
    }
}