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<?php
namespace Gt\Dom\Test;

use Gt\Dom\Test\Helper\Helper;
use Gt\Dom\XMLDocument;
use PHPUnit\Framework\TestCase;

class XMLDocumentTest extends TestCase {
	public function testConstruction() {
		// test construction from raw XML
		$fromRawXML = new XMLDocument(Helper::XML);
		$this->assertInstanceOf(XMLDocument::class, $fromRawXML);
		// test construction from a DOMDocument object
		$domDocument = new \DOMDocument('1.0', 'UTF-8');
		$domDocument->loadXML(Helper::XML);

		$fromDOMDocument = new XMLDocument($domDocument);
		$this->assertInstanceOf(XMLDocument::class, $fromDOMDocument);

		// test construction from a XMLDocument object, just to be sure
		$fromXMLDocument = new XMLDocument($fromRawXML);
		$this->assertInstanceOf(XMLDocument::class, $fromXMLDocument);
	}

	public function testQuerySelector() {
		$document = new XMLDocument(Helper::XML);
		$firstFoodName = $document->querySelector("food name");
		self::assertEquals("Belgian Waffles", $firstFoodName->nodeValue);
	}

	public function testQuerySelectorAttribute() {
		$document = new XMLDocument(Helper::XML);
		$offerFood = $document->querySelector("food[offer]");
		self::assertEquals("10%", $offerFood->getAttribute("offer"));
	}

	public function testQuerySelectorAll() {
		$document = new XMLDocument(Helper::XML);
		$totalCalories = 0;

		foreach($document->querySelectorAll("breakfast-menu>food calories") as $caloriesElement) {
			$totalCalories += (int)$caloriesElement->nodeValue;
		}

		self::assertEquals(
			650 + 900 + 900 + 600 + 950,
			$totalCalories
		);
	}
}