<?php
// $Id: captcha.pages.test,v 1.2 2008-06-04 08:24:38 soxofaan Exp $

/**
* @file Tests for the CAPTCHA functionality.
*/
class CaptchaPagesTest extends DrupalTestCase {

  /**
   * User with CAPTCHA administration permission
   */
  var $admin_user;

  /**
   * Untrusted (but authenticated) user
   */
  var $untrusted_user;

  /**
   * Drupal SimpleTest method: return metadata about the test.
   */
  function get_info() {
    return array(
      'name'  => t('CAPTCHA functionality'),
      'desc'  => t('Test the CAPTCHA functionality.'),
      'group' => t('CAPTCHA module'),
    );
  }

  /**
   * SimpleTest core method: code run before each and every test method.
   *
   * Optional. You only need this if you have setup tasks.
   */
  function setUp() {
    // Always call the setUp() function from the parent class.
    parent::setUp();

    // Make sure that CAPTCHA module is enabled.
    $this->drupalModuleEnable('captcha');

    // Create a filter admin user
    $permissions = array('administer CAPTCHA settings');
    $this->admin_user = $this->drupalCreateUserRolePerm($permissions);

    // Create a normal user for page creation
    $permissions = array();
    $this->untrusted_user = $this->drupalCreateUserRolePerm($permissions);
  }

  /**
   * SimpleTest core method: code run after each and every test method.
   *
   * Optional. You only need this if you have setup tasks.
   */
  function tearDown() {
    // Always call the tearDown() function from the parent class.
    parent::tearDown();
  }


  /**
   * Helper function to set a CAPTCHA on a form
   */
  function _set_captcha_point($form_id, $captcha_type = 'captcha/Math') {
    // log in as admin, but first disable the CAPTCHA module to avoid that
    // it would protect the login form
    $this->drupalModuleDisable('image_captcha');
    $this->drupalModuleDisable('captcha');
    $this->drupalLoginUser($this->admin_user);
    $this->drupalModuleEnable('captcha');
    // set CAPTCHA on login form
    $form_values = array(
      'captcha_point_form_id' => $form_id,
      'captcha_type' => $captcha_type,
    );
    $this->drupalPost('admin/user/captcha/captcha/captcha_point', $form_values, t('Save'));
    $this->assertText(t('Saved CAPTCHA point settings.'), t('Set CAPTCHA on form %form_id', array('%form_id' => $form_id)));
    // log out as admin
    $this->drupalGet('logout');
  }

  /**
   * Test CAPTCHA on user login form
   */
  function test_captcha_on_login_form() {
    // set a CAPTCHA on the login form
    $this->_set_captcha_point('user_login', 'captcha/Math');

    // log in untrusted_user with wront captcha_response
    // (based on DrupalTestCase->drupalLoginUser())
    $user = $this->untrusted_user;
    $this->drupalGet('user');
    $form_values = array(
      'name' => $user->name,
      'pass' => $user->pass_raw,
      'captcha_response' => '_',
    );
    $this->drupalPost('user', $form_values, t('Log in'));
    // check that the login failed
    $this->drupalGet('user');
    $this->assertNoText($user->name, t('CAPTCHA can prevent logging in'));

    // remove the CAPTCHA again from the login form
    /// @todo: restore to original CAPTCHA type instead of setting it to none
    $this->_set_captcha_point('user_login', 'none');
  }

}