Codeception\Command\GeneratePhpunitBootstrap::getXmlFileContent PHP Method

    protected function getXmlFileContent($suitesEntries, $testsPath, $previousConfig = null)
    {
        $template = <<<'XML'
<phpunit
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.5/phpunit.xsd"
         backupGlobals="true"
         backupStaticAttributes="false"
         bootstrap="{{{bootstrapPath}}}"
         cacheTokens="false"
         colors="false"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         forceCoversAnnotation="false"
         mapTestClassNameToCoveredClassName="false"
         printerClass="PHPUnit_TextUI_ResultPrinter"
         processIsolation="false"
         stopOnError="false"
         stopOnFailure="false"
         stopOnIncomplete="false"
         stopOnSkipped="false"
         stopOnRisky="false"
         testSuiteLoaderClass="PHPUnit_Runner_StandardTestSuiteLoader"
         timeoutForSmallTests="1"
         timeoutForMediumTests="10"
         timeoutForLargeTests="60"
         verbose="false">
 <testsuites>
    {{{testSuites}}}
</testsuites>
</phpunit>
XML;
        if (is_a($previousConfig, 'SimpleXMLElement')) {
            /** @var \SimpleXMLElement $previousConfig */
            $attrs = (array) $previousConfig->attributes();
            $attrs = reset($attrs);
            if (!empty($attrs)) {
                $new = simplexml_load_string($template);
                $newAttrs = (array) $new->attributes();
                $newAttrs = reset($newAttrs);
                $keep = array_keys(array_intersect_key($attrs, $newAttrs));
                $attrs = array_merge($newAttrs, $attrs);
                array_walk($attrs, function ($value, $key) use(&$new, $keep) {
                    if (in_array($key, $keep)) {
                        $new->attributes()->{$key} = $value;
                    } else {
                        unset($new->attributes()->{$key});
                    }
                });
                $template = $new->saveXML();
            }
        }
        return $this->compileTemplate(['testSuites' => implode("\n", $suitesEntries), 'bootstrapPath' => $this->bootstrapFilePath($testsPath)], $template);
    }