trait BasicAuthTestTrait

trait BasicAuthTestTrait {
    
    /**
     * Retrieves a Drupal path or an absolute path using basic authentication.
     *
     * @param \Drupal\Core\Url|string $path
     *   Drupal path or URL to load into the internal browser.
     * @param string $username
     *   The username to use for basic authentication.
     * @param string $password
     *   The password to use for basic authentication.
     * @param array $options
     *   (optional) Options to be forwarded to the url generator.
     *
     * @return string
     *   The retrieved HTML string, also available as $this->getRawContent().
     */
    protected function basicAuthGet($path, $username, $password, array $options = []) {
        return $this->drupalGet($path, $options, $this->getBasicAuthHeaders($username, $password));
    }
    
    /**
     * Executes a form submission using basic authentication.
     *
     * @param string $path
     *   Location of the post form.
     * @param array $edit
     *   Field data in an associative array.
     * @param string $submit
     *   Value of the submit button whose click is to be emulated.
     * @param string $username
     *   The username to use for basic authentication.
     * @param string $password
     *   The password to use for basic authentication.
     * @param array $options
     *   Options to be forwarded to the url generator.
     * @param string $form_html_id
     *   (optional) HTML ID of the form to be submitted.
     * @param string $extra_post
     *   (optional) A string of additional data to append to the POST submission.
     *
     * @return string
     *   The retrieved HTML string.
     *
     * @see \Drupal\simpletest\WebTestBase::drupalPostForm()
     */
    protected function basicAuthPostForm($path, $edit, $submit, $username, $password, array $options = [], $form_html_id = NULL, $extra_post = NULL) {
        return $this->drupalPostForm($path, $edit, $submit, $options, $this->getBasicAuthHeaders($username, $password), $form_html_id, $extra_post);
    }
    
    /**
     * Returns HTTP headers that can be used for basic authentication in Curl.
     *
     * @param string $username
     *   The username to use for basic authentication.
     * @param string $password
     *   The password to use for basic authentication.
     *
     * @return array
     *   An array of raw request headers as used by curl_setopt().
     */
    protected function getBasicAuthHeaders($username, $password) {
        // Set up Curl to use basic authentication with the test user's credentials.
        return [
            'Authorization: Basic ' . base64_encode("{$username}:{$password}"),
        ];
    }

}