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added PHPUnit assertions in various components
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‎CHANGELOG.md

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4.3.0
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-----
66

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* Added PHPUnit constraints: `CrawlerSelectorAttributeValueSame`, `CrawlerSelectorExists`, `CrawlerSelectorTextContains``
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and `CrawlerSelectorTextSame`
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* Added return of element name (`_name`) in `extract()` method.
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* Added ability to return a default value in `text()` and `html()` instead of throwing an exception when node is empty.
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‎Test/Constraint/CrawlerSelectorAttributeValueSame.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Test\Constraint;
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use PHPUnit\Framework\Constraint\Constraint;
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use Symfony\Component\DomCrawler\Crawler;
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final class CrawlerSelectorAttributeValueSame extends Constraint
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{
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private $selector;
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private $attribute;
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private $expectedText;
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public function __construct(string $selector, string $attribute, string $expectedText)
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{
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$this->selector = $selector;
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$this->attribute = $attribute;
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$this->expectedText = $expectedText;
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}
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/**
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* {@inheritdoc}
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*/
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public function toString(): string
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{
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return sprintf('has a node matching selector "%s" with attribute "%s" of value "%s"', $this->selector, $this->attribute, $this->expectedText);
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function matches($crawler): bool
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{
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$crawler = $crawler->filter($this->selector);
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if (!\count($crawler)) {
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return false;
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}
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return $this->expectedText === trim($crawler->getNode(0)->getAttribute($this->attribute));
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function failureDescription($crawler): string
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{
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return 'the Crawler '.$this->toString();
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}
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}

‎Test/Constraint/CrawlerSelectorExists.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Test\Constraint;
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use PHPUnit\Framework\Constraint\Constraint;
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use Symfony\Component\DomCrawler\Crawler;
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final class CrawlerSelectorExists extends Constraint
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{
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private $selector;
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public function __construct(string $selector)
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{
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$this->selector = $selector;
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}
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/**
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* {@inheritdoc}
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*/
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public function toString(): string
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{
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return sprintf('matches selector "%s"', $this->selector);
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function matches($crawler): bool
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{
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return 0 < \count($crawler->filter($this->selector));
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function failureDescription($crawler): string
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{
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return 'the Crawler '.$this->toString();
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}
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}

‎Test/Constraint/CrawlerSelectorTextContains.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Test\Constraint;
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use PHPUnit\Framework\Constraint\Constraint;
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use Symfony\Component\DomCrawler\Crawler;
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final class CrawlerSelectorTextContains extends Constraint
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{
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private $selector;
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private $expectedText;
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public function __construct(string $selector, string $expectedText)
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{
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$this->selector = $selector;
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$this->expectedText = $expectedText;
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}
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/**
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* {@inheritdoc}
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*/
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public function toString(): string
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{
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return sprintf('has a node matching selector "%s" with content containing "%s"', $this->selector, $this->expectedText);
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function matches($crawler): bool
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{
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$crawler = $crawler->filter($this->selector);
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if (!\count($crawler)) {
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return false;
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}
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return false !== \mb_strpos($crawler->text(), $this->expectedText);
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function failureDescription($crawler): string
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{
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return 'the Crawler '.$this->toString();
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}
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}

‎Test/Constraint/CrawlerSelectorTextSame.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Test\Constraint;
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use PHPUnit\Framework\Constraint\Constraint;
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use Symfony\Component\DomCrawler\Crawler;
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final class CrawlerSelectorTextSame extends Constraint
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{
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private $selector;
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private $expectedText;
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public function __construct(string $selector, string $expectedText)
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{
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$this->selector = $selector;
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$this->expectedText = $expectedText;
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}
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/**
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* {@inheritdoc}
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*/
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public function toString(): string
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{
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return sprintf('has a node matching selector "%s" with content "%s"', $this->selector, $this->expectedText);
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function matches($crawler): bool
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{
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$crawler = $crawler->filter($this->selector);
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if (!\count($crawler)) {
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return false;
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}
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return $this->expectedText === trim($crawler->text());
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}
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/**
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* @param Crawler $crawler
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*
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* {@inheritdoc}
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*/
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protected function failureDescription($crawler): string
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{
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return 'the Crawler '.$this->toString();
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}
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}

‎Tests/Test/Constraint/CrawlerSelectorAttributeValueSameTest.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Tests\Test\Constraint;
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use PHPUnit\Framework\ExpectationFailedException;
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use PHPUnit\Framework\TestCase;
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use PHPUnit\Framework\TestFailure;
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use Symfony\Component\DomCrawler\Crawler;
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use Symfony\Component\DomCrawler\Test\Constraint\CrawlerSelectorAttributeValueSame;
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class CrawlerSelectorAttributeValueSameTest extends TestCase
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{
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public function testConstraint(): void
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{
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$constraint = new CrawlerSelectorAttributeValueSame('input[name="username"]', 'value', 'Fabien');
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$this->assertTrue($constraint->evaluate(new Crawler('<html><body><form><input type="text" name="username" value="Fabien">'), '', true));
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$this->assertFalse($constraint->evaluate(new Crawler('<html><head><title>Bar'), '', true));
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try {
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$constraint->evaluate(new Crawler('<html><head><title>Bar'));
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} catch (ExpectationFailedException $e) {
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$this->assertEquals("Failed asserting that the Crawler has a node matching selector \"input[name=\"username\"]\" with attribute \"value\" of value \"Fabien\".\n", TestFailure::exceptionToString($e));
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return;
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}
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$this->fail();
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}
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}

‎Tests/Test/Constraint/CrawlerSelectorExistsTest.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Tests\Test\Constraint;
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use PHPUnit\Framework\ExpectationFailedException;
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use PHPUnit\Framework\TestCase;
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use PHPUnit\Framework\TestFailure;
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use Symfony\Component\DomCrawler\Crawler;
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use Symfony\Component\DomCrawler\Test\Constraint\CrawlerSelectorExists;
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class CrawlerSelectorExistsTest extends TestCase
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{
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public function testConstraint(): void
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{
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$constraint = new CrawlerSelectorExists('title');
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$this->assertTrue($constraint->evaluate(new Crawler('<html><head><title>'), '', true));
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$constraint = new CrawlerSelectorExists('h1');
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$this->assertFalse($constraint->evaluate(new Crawler('<html><head><title>'), '', true));
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try {
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$constraint->evaluate(new Crawler('<html><head><title>'));
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} catch (ExpectationFailedException $e) {
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$this->assertEquals("Failed asserting that the Crawler matches selector \"h1\".\n", TestFailure::exceptionToString($e));
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return;
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}
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$this->fail();
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}
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}

‎Tests/Test/Constraint/CrawlerSelectorTextContainsTest.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
9+
* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DomCrawler\Tests\Test\Constraint;
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use PHPUnit\Framework\ExpectationFailedException;
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use PHPUnit\Framework\TestCase;
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use PHPUnit\Framework\TestFailure;
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use Symfony\Component\DomCrawler\Crawler;
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use Symfony\Component\DomCrawler\Test\Constraint\CrawlerSelectorTextContains;
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class CrawlerSelectorTextContainsTest extends TestCase
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{
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public function testConstraint(): void
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{
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$constraint = new CrawlerSelectorTextContains('title', 'Foo');
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$this->assertTrue($constraint->evaluate(new Crawler('<html><head><title>Foobar'), '', true));
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$this->assertFalse($constraint->evaluate(new Crawler('<html><head><title>Bar'), '', true));
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try {
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$constraint->evaluate(new Crawler('<html><head><title>Bar'));
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} catch (ExpectationFailedException $e) {
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$this->assertEquals("Failed asserting that the Crawler has a node matching selector \"title\" with content containing \"Foo\".\n", TestFailure::exceptionToString($e));
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return;
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}
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$this->fail();
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}
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}

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