function PerformanceTestTrait::collectNetworkData

Prepares data for assertions.

Parameters

array $messages: The chromedriver performance log messages.

\Drupal\Tests\PerformanceData $performance_data: An instance of the performance data value object.

File

core/tests/Drupal/Tests/PerformanceTestTrait.php, line 351

Class

PerformanceTestTrait

Provides various methods to aid in collecting performance data during tests.

Namespace

Code

private function collectNetworkData(array $messages, PerformanceData $performance_data) : void {
    $stylesheet_count = 0;
    $script_count = 0;
    $stylesheet_bytes = 0;
    $script_bytes = 0;
    $stylesheet_urls = [];
    $script_urls = [];
    // Collect the CSS and JavaScript responses from the network log build an
    // associative array so that if multiple page or AJAX requests have
    // requested styles and scripts, only unique files will be counted.
    foreach ($messages as $message) {
        if ($message['method'] === 'Network.responseReceived') {
            if ($message['params']['type'] === 'Stylesheet') {
                $url = $message['params']['response']['url'];
                $stylesheet_urls[$url] = $url;
            }
            if ($message['params']['type'] === 'Script') {
                $url = $message['params']['response']['url'];
                $script_urls[$url] = $url;
            }
        }
    }
    // Get the actual files from disk when calculating filesize, to ensure
    // consistency between testing environments. The performance log has
    // 'encodedDataLength' for network requests, however in the case that the
    // file has already been requested by the browser, this will be the length
    // of a HEAD response for 304 not modified or similar. Additionally, core's
    // aggregation adds the basepath to CSS aggregates, resulting in slightly
    // different file sizes depending on whether tests run in a subdirectory or
    // not.
    foreach ($stylesheet_urls as $url) {
        $stylesheet_count++;
        if ($GLOBALS['base_path'] === '/') {
            $filename = ltrim(parse_url($url, PHP_URL_PATH), '/');
            $stylesheet_bytes += strlen(file_get_contents($filename));
        }
        else {
            $filename = str_replace($GLOBALS['base_path'], '', parse_url($url, PHP_URL_PATH));
            // Strip the basepath from the contents of the file so that tests
            // running in a subdirectory get the same results.
            $stylesheet_bytes += strlen(str_replace($GLOBALS['base_path'], '/', file_get_contents($filename)));
        }
    }
    foreach ($script_urls as $url) {
        $script_count++;
        if ($GLOBALS['base_path'] === '/') {
            $filename = ltrim(parse_url($url, PHP_URL_PATH), '/');
        }
        else {
            $filename = str_replace($GLOBALS['base_path'], '', parse_url($url, PHP_URL_PATH));
        }
        $script_bytes += strlen(file_get_contents($filename));
    }
    $performance_data->setStylesheetCount($stylesheet_count);
    $performance_data->setStylesheetBytes($stylesheet_bytes);
    $performance_data->setScriptCount($script_count);
    $performance_data->setScriptBytes($script_bytes);
}