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<?php
namespace Gt\Dom\Test;
use DOMDocument;
use Gt\Dom\Element;
use Gt\Dom\HTMLDocument;
use Gt\Dom\Test\Helper\Helper;
use PHPUnit\Framework\TestCase;
use Psr\Http\Message\StreamInterface;
class HTMLDocumentTest extends TestCase {
public function testConstruction() {
// test construction from raw HTML
$fromRawHTML = new HTMLDocument(Helper::HTML);
$this->assertInstanceOf(HTMLDocument::class, $fromRawHTML);
// test construction from a DOMDocument object
$domDocument = new DOMDocument('1.0', 'UTF-8');
$domDocument->loadHTML(Helper::HTML);
$fromDOMDocument = new HTMLDocument($domDocument);
$this->assertInstanceOf(HTMLDocument::class, $fromDOMDocument);
// test construction from a HTMLDocument object, just to be sure
$fromHTMLDocument = new HTMLDocument($fromRawHTML);
$this->assertInstanceOf(HTMLDocument::class, $fromHTMLDocument);
// test if elements are consistent
$h2FromRawHTML = $fromRawHTML->querySelector('h2');
$h2FromDOMDocument = $fromDOMDocument->querySelector('h2');
$this->assertSame($h2FromRawHTML, $h2FromDOMDocument);
}
public function testInheritance() {
$document = new HTMLDocument(Helper::HTML);
$this->assertInstanceOf(Element::class, $document->documentElement);
}
public function testRemoveElement() {
$document = new HTMLDocument(Helper::HTML);
$h1List = $document->getElementsByTagName("h1");
$this->assertEquals(1, $h1List->length);
$h1 = $h1List->item(0);
$h1->remove();
$h1List = $document->getElementsByTagName("h1");
$this->assertEquals(0, $h1List->length);
}
public function testQuerySelector() {
$document = new HTMLDocument(Helper::HTML_MORE);
$h2TagName = $document->getElementsByTagName("h2")->item(0);
$h2QuerySelector = $document->querySelector("h2");
$this->assertSame($h2QuerySelector, $h2TagName);
}
public function testQuerySelectorAll() {
$document = new HTMLDocument(Helper::HTML_MORE);
$pListTagName = $document->getElementsByTagName("p");
$pListQuerySelector = $document->querySelectorAll("p");
$this->assertEquals($pListTagName->length, $pListQuerySelector->length);
for($i = 0, $len = $pListQuerySelector->length; $i < $len; $i++) {
$this->assertSame(
$pListQuerySelector->item($i),
$pListTagName->item($i)
);
}
}
public function testHeadElement() {
$document = new HTMLDocument(Helper::HTML_MORE);
$this->assertInstanceOf(Element::class, $document->head);
}
public function testHeadElementAutomaticallyCreated() {
// test\Helper::HTML does not explicitly define a <head>
$document = new HTMLDocument(Helper::HTML);
$this->assertInstanceOf(Element::class, $document->head);
}
public function testBodyElement() {
$document = new HTMLDocument(Helper::HTML_MORE);
$this->assertInstanceOf(Element::class, $document->body);
}
public function testBodyElementAutomaticallyCreated() {
// test\Helper::HTML does not explicitly define a <body>
$document = new HTMLDocument(Helper::HTML);
$this->assertInstanceOf(Element::class, $document->body);
}
// Test live properties:
public function testFormsPropertyWhenNoForms() {
$documentWithout = new HTMLDocument(Helper::HTML);
$this->assertEquals(0, $documentWithout->forms->length);
}
public function testFormsPropertyWhenForms() {
$documentWith = new HTMLDocument(Helper::HTML_MORE);
$this->assertEquals(2, $documentWith->forms->length);
}
public function testAnchorsPropertyWhenNoAnchors() {
$documentWithout = new HTMLDocument(Helper::HTML);
$this->assertEquals(0, $documentWithout->anchors->length);
}
public function testAnchorsPropertyWhenAnchors() {
$documentWith = new HTMLDocument(Helper::HTML_MORE);
// There are actually 3 "a" elements, but only two are anchors - the
// other is a link.
$this->assertEquals(2, $documentWith->anchors->length);
}
public function testImagesPropertyWhenNoImages() {
$documentWithout = new HTMLDocument(Helper::HTML);
$this->assertEquals(0, $documentWithout->images->length);
}
public function testImagesPropertyWhenImages() {
$documentWith = new HTMLDocument(Helper::HTML_MORE);
$this->assertEquals(2, $documentWith->images->length);
}
public function testLinksPropertyWhenNoLinks() {
$documentWithout = new HTMLDocument(Helper::HTML);
$this->assertEquals(0, $documentWithout->links->length);
}
public function testLinksPropertyWhenLinks() {
$documentWith = new HTMLDocument(Helper::HTML_MORE);
$this->assertEquals(1, $documentWith->links->length);
}
public function testTitleWhenNoTitle() {
$document = new HTMLDocument(Helper::HTML);
$this->assertEmpty($document->title);
$newTitle = "New title";
$document->title = $newTitle;
$this->assertEquals($newTitle, $document->title);
$this->assertEquals(
$newTitle,
$document->head->querySelector("title")->textContent
);
}
public function testOptionalTags() {
$document = new HTMLDocument(Helper::HTML_LESS);
$this->assertCount(3, $document->head->children);
$this->assertCount(1, $document->body->children);
}
public function testEmptyHTMLDocument() {
$document = new HTMLDocument("");
$nothing = $document->querySelector("div");
$this->assertNull($nothing);
$this->assertCount(2, $document->documentElement->children);
$this->assertNotNull($document->head);
$this->assertNotNull($document->body);
$this->assertCount(1, $document->querySelectorAll("body"));
}
public function testPsr7StreamInterface() {
$document = new HTMLDocument("");
self::assertTrue(is_subclass_of(
$document,
StreamInterface::class
));
}
public function testInferredBody() {
$document = new HTMLDocument();
$message = "Hello, World!";
$document->body->innerText = $message;
self::assertEquals($message, $document->body->innerText);
self::assertStringContainsString(
"<body>$message</body>",
$document->saveHTML()
);
}
public function testInferredTitle() {
$document = new HTMLDocument();
$message = "Hello, World!";
$document->title = $message;
self::assertEquals($message, $document->title);
self::assertStringContainsString(
"<head><title>$message</title></head>",
$document->saveHTML()
);
}
}