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<?php declare(strict_types=1); |
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namespace MOrtola\BehatSEOContexts\Context; |
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use Behat\Mink\Element\NodeElement; |
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use Matriphe\ISO639\ISO639; |
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use Webmozart\Assert\Assert; |
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class LocalizationContext extends BaseContext |
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{ |
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/** |
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* @Then the page hreflang markup should be valid |
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*/ |
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public function thePageHreflangMarkupShouldBeValid(): void |
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{ |
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$this->assertHreflangExists(); |
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$this->assertHreflangValidSelfReference(); |
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$this->assertHreflangValidIsoCodes(); |
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$this->assertHreflangCoherentXDefault(); |
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$this->assertHreflangValidReciprocal(); |
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} |
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private function assertHreflangExists(): void |
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{ |
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Assert::notEmpty( |
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$this->getHreflangElements(), |
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sprintf('No hreflang meta tags have been found in %s', $this->getCurrentUrl()) |
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); |
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} |
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/** |
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* @return NodeElement[] |
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*/ |
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private function getHreflangElements(): array |
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{ |
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return $this->getSession()->getPage()->findAll( |
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'xpath', |
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'//head/link[@rel="alternate" and @hreflang]' |
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); |
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} |
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private function assertHreflangValidSelfReference(): void |
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{ |
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$selfReferenceFound = false; |
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foreach ($this->getHreflangElements() as $hreflangMetaTag) { |
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$alternateLink = $hreflangMetaTag->getAttribute('href'); |
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if ($alternateLink === $this->getCurrentUrl()) { |
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$selfReferenceFound = true; |
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} |
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} |
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Assert::true( |
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$selfReferenceFound, |
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sprintf('No self-referencing hreflang meta tag has been found in %s', $this->getCurrentUrl()) |
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); |
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} |
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private function assertHreflangValidIsoCodes(): void |
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{ |
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$localeIsoValidator = new ISO639(); |
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foreach ($this->getHreflangElements() as $hreflangMetaTag) { |
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$alternateLocale = $hreflangMetaTag->getAttribute('hreflang'); |
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if ('x-default' === $alternateLocale) { |
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continue; |
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} |
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Assert::notEmpty( |
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$alternateLocale, |
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'hreflang locale should not be empty.' |
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); |
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Assert::notEmpty( |
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$localeIsoValidator->languageByCode1($alternateLocale), |
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sprintf( |
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'Wrong locale ISO-639-1 code "%s" in hreflang meta tag in url %s: %s', |
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$alternateLocale, |
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$this->getCurrentUrl(), |
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$this->getOuterHtml($hreflangMetaTag) |
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) |
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); |
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} |
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} |
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private function assertHreflangCoherentXDefault(): void |
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{ |
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foreach ($this->getHreflangElements() as $hreflangMetaTag) { |
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if ('x-default' === $hreflangMetaTag->getAttribute('hreflang')) { |
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$xDefault = $hreflangMetaTag->getAttribute('href'); |
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} |
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} |
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if (!isset($xDefault)) { |
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return; |
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} |
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foreach ($this->getHreflangElements() as $hreflangMetaTag) { |
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if ('x-default' !== $hreflangMetaTag->getAttribute('hreflang')) { |
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$href = $hreflangMetaTag->getAttribute('href'); |
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Assert::notNull($href); |
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$this->getSession()->visit($href); |
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$hreflangAltDefault = $this->getSession()->getPage()->find( |
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'xpath', |
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'//head/link[@rel="alternate" and @hreflang="x-default"]' |
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); |
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Assert::notNull($hreflangAltDefault); |
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Assert::eq( |
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$xDefault, |
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$hreflangAltDefault->getAttribute('href') |
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); |
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$this->getSession()->back(); |
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} |
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} |
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} |
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private function assertHreflangValidReciprocal(): void |
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{ |
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$currentPageHreflangLinks = []; |
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foreach ($this->getHreflangElements() as $hreflangElement) { |
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$currentPageHreflangLinks[$hreflangElement->getAttribute('hreflang')] = $hreflangElement->getAttribute( |
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'href' |
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); |
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} |
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foreach ($currentPageHreflangLinks as $currentPageHreflangLink) { |
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if ($currentPageHreflangLink === $this->getCurrentUrl()) { |
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continue; |
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} |
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if ($currentPageHreflangLink) { |
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$this->getSession()->visit($currentPageHreflangLink); |
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} |
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$referencedPageHreflangLinks = []; |
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foreach ($this->getHreflangElements() as $hreflangElement) { |
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$referencedPageHreflangLinks[$hreflangElement->getAttribute( |
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'hreflang' |
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)] = $hreflangElement->getAttribute('href'); |
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} |
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$this->getSession()->back(); |
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Assert::eq( |
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$currentPageHreflangLinks, |
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$referencedPageHreflangLinks, |
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'Missing or not coherent hreflang reciprocal links.' |
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); |
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} |
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} |
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/** |
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* @Then the page hreflang markup should not be valid |
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*/ |
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162
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public function thePageHreflangMarkupShouldNotBeValid(): void |
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{ |
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$this->assertInverse( |
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[$this, 'thePageHreflangMarkupShouldBeValid'], |
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'hreflang markup should not be valid.' |
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); |
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} |
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} |
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marcortola /
behat-seo-contexts
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