writeWithColor example

  protected function setUpHtmlOutput() {
    if ($html_output_directory = getenv('BROWSERTEST_OUTPUT_DIRECTORY')) {
      // Initialize html output debugging.       $html_output_directory = rtrim($html_output_directory, '/');

      // Check if directory exists.       if (!is_dir($html_output_directory) || !is_writable($html_output_directory)) {
        $this->writeWithColor('bg-red, fg-black', "HTML output directory $html_output_directory is not a writable directory.");
      }
      else {
        // Convert to a canonicalized absolute pathname just in case the current         // working directory is changed.         $html_output_directory = realpath($html_output_directory);
        $this->browserOutputFile = tempnam($html_output_directory, 'browser_output_');
        if ($this->browserOutputFile) {
          touch($this->browserOutputFile);
        }
        else {
          $this->writeWithColor('bg-red, fg-black', "Unable to create a temporary file in $html_output_directory.");
        }