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<?php |
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namespace MOrtola\BehatSEOContexts\Context; |
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use Behat\Mink\Element\NodeElement; |
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use Behat\Mink\Exception\UnsupportedDriverActionException; |
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use Behat\Symfony2Extension\Driver\KernelDriver; |
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use PHPUnit\Framework\Assert; |
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class PerformanceContext extends BaseContext |
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{ |
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const RES_EXT = [ |
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'PNG' => 'png', |
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'HTML' => 'html', |
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'JPEG' => 'jpeg', |
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'GIF' => 'gif', |
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'ICO' => 'ico', |
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'JAVASCRIPT' => 'js', |
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'CSS' => 'css', |
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'CSS_INLINE_HEAD' => 'css-inline-head', |
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'CSS_LINK_HEAD' => 'css-link-head', |
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]; |
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/** |
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* @throws \Exception |
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* |
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* @Then /^Javascript code should load (async|defer)$/ |
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*/ |
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public function javascriptFilesShouldLoadAsync() |
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{ |
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foreach ($this->getPageResources(self::RES_EXT['JAVASCRIPT']) as $scriptElement) { |
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Assert::assertTrue( |
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$scriptElement->hasAttribute('async') || $scriptElement->hasAttribute('defer'), |
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sprintf( |
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'Javascript file %s is render blocking in %s', |
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$this->getResourceUrl($scriptElement, self::RES_EXT['JAVASCRIPT']), |
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$this->getCurrentUrl() |
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) |
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); |
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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 getPageResources(string $resourceType, bool $selfHosted = true): array |
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{ |
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if (!$xpath = $this->getResourceXpath($resourceType)) { |
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return []; |
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} |
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if ($selfHosted) { |
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$xpath = preg_replace( |
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'/\[contains\(@(.*),/', |
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sprintf('[(starts-with(@$1,"%s") or starts-with(@$1,"/")) and contains(@$1,', $this->webUrl), |
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$xpath |
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); |
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} |
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return $this->getSession()->getPage()->findAll('xpath', $xpath); |
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} |
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private function getResourceXpath(string $resourceType): string |
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{ |
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if (in_array($resourceType, [self::RES_EXT['JPEG'], self::RES_EXT['PNG'], self::RES_EXT['GIF']])) { |
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return sprintf('//img[contains(@src,".%s")]', $resourceType); |
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} |
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if (in_array($resourceType, [self::RES_EXT['ICO'], self::RES_EXT['CSS']])) { |
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return sprintf('//link[contains(@href,".%s")]', $resourceType); |
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} |
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if (self::RES_EXT['JAVASCRIPT'] === $resourceType) { |
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return '//script[contains(@src,".js")]'; |
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} |
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if (self::RES_EXT['CSS_INLINE_HEAD'] === $resourceType) { |
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return '//head//style'; |
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} |
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if (self::RES_EXT['CSS_LINK_HEAD'] === $resourceType) { |
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return '//head//link[contains(@href,".css")]'; |
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} |
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return ''; |
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} |
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/** |
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* @throws \Exception |
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*/ |
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private function getResourceUrl(NodeElement $element, string $resourceType): string |
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{ |
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$this->assertResourceTypeIsValid($resourceType); |
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if (in_array($resourceType, [ |
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self::RES_EXT['PNG'], |
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self::RES_EXT['JPEG'], |
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self::RES_EXT['GIF'], |
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self::RES_EXT['JAVASCRIPT'] |
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])) { |
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return $element->getAttribute('src'); |
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} |
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if (in_array($resourceType, [self::RES_EXT['CSS'], self::RES_EXT['ICO']])) { |
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return $element->getAttribute('href'); |
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} |
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throw new \Exception( |
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sprintf('%s resource type url is not implemented', $resourceType) |
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); |
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} |
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private function assertResourceTypeIsValid(string $resourceType) |
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{ |
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if (!in_array($resourceType, self::RES_EXT)) { |
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throw new \InvalidArgumentException( |
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sprintf( |
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'%s resource type is not valid. Allowed types are: %s', |
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$resourceType, |
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implode(',', self::RES_EXT) |
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) |
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); |
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} |
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} |
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/** |
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* @throws \Exception |
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* |
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* @Then HTML code should be minified |
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*/ |
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public function htmlShouldBeMinified() |
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{ |
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$this->assertContentIsMinified( |
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$this->getSession()->getPage()->getContent(), |
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$this->minimizeHtml($this->getSession()->getPage()->getContent()) |
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); |
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} |
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private function assertContentIsMinified(string $content, string $contentMinified) |
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{ |
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Assert::assertTrue( |
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$content == $contentMinified, |
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'Code is not minified.' |
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); |
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} |
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private function minimizeCss(string $css): string |
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{ |
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return preg_replace( |
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[ |
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'#("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\')|\/\*(?!\!)(?>.*?\*\/)|^\s*|\s*$#s', |
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'#("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\'|\/\*(?>.*?\*\/))|\s*+;\s*+(})\s*+|\s*+([*$~^| |
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]?+=|[{};,>~+]|\s*+-(?![0-9\.])|!important\b)\s*+|([[(:])\s++|\s++([])])|\s++(:)\s*+(?!(?>[^{}"\']++| |
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"(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\')*+{)|^\s++|\s++\z|(\s)\s+#si', |
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], |
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['$1', '$1$2$3$4$5$6$7'], |
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$css |
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); |
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} |
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private function minimizeJs(string $js): string |
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{ |
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return preg_replace( |
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[ |
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'#\s*("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\')\s*|\s*\/\*(?!\!|@cc_on)(?>[\s\S]*?\*\/)\s*| |
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\s*(?<![\:\=])\/\/.*(?=[\n\r]|$)|^\s*|\s*$#', |
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'#("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\'|\/\*(?>.*?\*\/)|\/(?!\/)[^\n\r]*?\/(?=[\s.,;]| |
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[gimuy]|$))|\s*([!%&*\(\)\-=+\[\]\{\}|;:,.<>?\/])\s*#s', |
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], |
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['$1', '$1$2'], |
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$js |
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); |
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} |
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private function minimizeHtml(string $html): string |
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{ |
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return preg_replace( |
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'/(?<=>)\s+|\s+(?=<)/', |
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'', |
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$html |
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); |
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} |
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/** |
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* @throws \Exception |
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* |
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* @Then CSS code should load deferred |
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*/ |
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public function cssFilesShouldLoadDeferred() |
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{ |
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Assert::assertEmpty( |
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$this->getPageResources(self::RES_EXT['CSS_LINK_HEAD'], true), |
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sprintf( |
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'Some self hosted css files are loading in head in %s', |
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$this->getCurrentUrl() |
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) |
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); |
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} |
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/** |
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* @throws \Exception |
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* |
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* @Then critical CSS code should exist in head |
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*/ |
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public function criticalCssShouldExistInHead() |
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{ |
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Assert::assertNotEmpty( |
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$this->getPageResources(self::RES_EXT['CSS_INLINE_HEAD']), |
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sprintf( |
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'No inline css is loading in head in %s', |
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$this->getCurrentUrl() |
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) |
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); |
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} |
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212
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/** |
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* @Then HTML code should not be minified |
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*/ |
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public function htmlShouldNotBeMinified() |
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{ |
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$this->assertInverse( |
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[$this, 'htmlShouldBeMinified'], |
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'HTML should not be minified.' |
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); |
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} |
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223
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/** |
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224
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* @Then /^(CSS|Javascript) code should not be minified$/ |
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*/ |
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public function cssOrJavascriptFilesShouldNotBeMinified(string $resourceType) |
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{ |
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$this->assertInverse( |
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function () use ($resourceType) { |
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$this->cssOrJavascriptFilesShouldBeMinified($resourceType); |
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}, |
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sprintf('%s should not be minified.', $resourceType) |
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); |
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} |
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/** |
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* @throws \Exception |
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* @throws UnsupportedDriverActionException |
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* |
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240
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* @Then /^(CSS|Javascript) code should be minified$/ |
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*/ |
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public function cssOrJavascriptFilesShouldBeMinified(string $resourceType) |
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{ |
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$this->doesNotSupportDriver(KernelDriver::class); |
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$resourceType = 'Javascript' === $resourceType ? 'js' : 'css'; |
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248
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foreach ($this->getPageResources($resourceType) as $element) { |
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$this->getSession()->visit($this->getResourceUrl($element, $resourceType)); |
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251
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$this->assertContentIsMinified( |
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$this->getSession()->getPage()->getContent(), |
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'js' === $resourceType ? |
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$this->minimizeJs($this->getSession()->getPage()->getContent()) |
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: $this->minimizeCss($this->getSession()->getPage()->getContent()) |
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); |
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258
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$this->getSession()->back(); |
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} |
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} |
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261
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262
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/** |
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263
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* @Then critical CSS code should not exist in head |
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264
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*/ |
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265
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public function criticalCssShouldNotExistInHead() |
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266
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{ |
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267
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$this->assertInverse( |
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268
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[$this, 'criticalCssShouldExistInHead'], |
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269
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'Critical CSS exist in head.' |
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270
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); |
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271
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} |
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272
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273
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/** |
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274
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* @Then /^browser cache should not be enabled for (png|jpeg|gif|ico|js|css) resources$/ |
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275
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*/ |
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276
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public function browserCacheMustNotBeEnabledForCssResources(string $resourceType) |
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277
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{ |
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278
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$this->assertInverse( |
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279
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function () use ($resourceType) { |
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280
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$this->browserCacheMustBeEnabledForResources($resourceType); |
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281
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}, |
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282
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sprintf('Browser cache is enabled for %s resources.', $resourceType) |
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283
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); |
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284
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} |
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285
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286
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/** |
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287
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* @throws \Exception |
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288
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* |
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289
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* @Then /^browser cache should be enabled for (png|jpeg|gif|ico|js|css) resources$/ |
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290
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*/ |
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291
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public function browserCacheMustBeEnabledForResources(string $resourceType) |
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292
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{ |
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293
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$this->doesNotSupportDriver(KernelDriver::class); |
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294
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295
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$element = $this->getPageResources($resourceType); |
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296
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$element = 0 < count($element) ? current($element) : null; |
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297
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298
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$this->getSession()->visit($this->getResourceUrl($element, $resourceType)); |
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299
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300
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Assert::assertTrue( |
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301
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isset($this->getSession()->getResponseHeaders()['Cache-Control']), |
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302
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sprintf( |
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303
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'Browser cache is not enabled for %s resources. Cache-Control HTTP header was not received.', |
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304
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$resourceType |
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305
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) |
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306
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); |
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307
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308
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Assert::assertNotContains( |
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309
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'-no', |
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310
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$this->getSession()->getResponseHeaders()['Cache-Control'], |
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311
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sprintf( |
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312
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'Browser cache is not enabled for %s resources. Cache-Control HTTP header is "no-cache".', |
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313
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$resourceType |
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314
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) |
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315
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); |
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316
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317
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$this->getSession()->back(); |
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318
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} |
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319
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320
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/** |
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321
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* @Then /^Javascript code should not load (async|defer)$/ |
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322
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*/ |
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323
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public function jsShouldNotLoadAsyncOr() |
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324
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{ |
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325
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$this->assertInverse( |
|
326
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[$this, 'javascriptFilesShouldLoadAsync'], |
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327
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'All JS files load async.' |
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328
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); |
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329
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} |
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330
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} |
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331
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|
marcortola /
behat-seo-contexts
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