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<?php
// $Id$

/**
 * @file
 * Provides SimpleTests for core session handling functionality.
 */

class SessionTestCase extends DrupalWebTestCase {
  /**
   * Implementation of getInfo().
   */
  function getInfo() {
    return array(
      'name' => t('Session tests'),
      'description' => t('Drupal session handling tests.'),
      'group' => t('Session')
    );
  }

  /**
   * Implementation of setUp().
   */
  function setUp() {
    parent::setUp('session_test');
  }

  /**
   * Tests for session_save_session().
   */
  function testSessionSaveSession() {
    $this->assertTrue(session_save_session(), t('session_save_session() correctly returns TRUE when initially called with no arguments.'), t('Session'));
    $this->assertFalse(session_save_session(FALSE), t('session_save_session() correctly returns FALSE when called with FALSE.'), t('Session'));
    $this->assertFalse(session_save_session(), t('session_save_session() correctly returns FALSE when saving has been disabled.'), t('Session'));
    $this->assertTrue(session_save_session(TRUE), t('session_save_session() correctly returns TRUE when called with TRUE.'), t('Session'));
    $this->assertTrue(session_save_session(), t('session_save_session() correctly returns TRUE when saving has been enabled.'), t('Session'));
  }

  /**
   * Test data persistence via the session_test module callbacks. Also tests
   * sess_count() since session data is already generated here.
   */
  function testDataPersistence() {
    $user = $this->drupalCreateUser(array('access content'));
    // Enable sessions.
    $this->sessionReset($user->uid);

    $this->drupalLogin($user);
    $this->session_count_authenticated = $this->session_count++;

    $value_1 = $this->randomName();
    $this->drupalGet('session-test/set/' . $value_1);
    $this->assertText($value_1, t('The session value was stored.'), t('Session'));
    $this->drupalGet('session-test/get');
    $this->assertText($value_1, t('Session correctly returned the stored data for an authenticated user.'), t('Session'));

    // Attempt to write over val_1. If session_save_session(FALSE) is working.
    // properly, val_1 will still be set.
    $value_2 = $this->randomName();
    $this->drupalGet('session-test/no-set/' . $value_2);
    $this->assertText($value_2, t('The session value was correctly passed to session-test/no-set.'), t('Session'));
    $this->drupalGet('session-test/get');
    $this->assertText($value_1, t('Session data is not saved for session_save_session(FALSE).'), t('Session'));

    // Switch browser cookie to anonymous user, then back to user 1.
    $this->sessionReset();
    $this->sessionReset($user->uid);
    $this->assertText($value_1, t('Session data persists through browser close.'), t('Session'));

    // Logout the user and make sure the stored value no longer persists.
    $this->drupalLogout();
    $this->sessionReset();
    $this->drupalGet('session-test/get');
    // Session count should go up since we're accessing anonymously now.
    $this->session_count_anonymous = $this->session_count++;
    $this->assertNoText($value_1, t("After logout, previous user's session data is not available."), t('Session'));

    $value_3 = $this->randomName();
    $this->drupalGet('session-test/set/' . $value_3);
    $this->assertText($value_3, t('Session data stored for anonymous user.'), t('Session'));
    $this->drupalGet('session-test/get');
    $this->assertText($value_3, t('Session correctly returned the stored data for an anonymous user.'), t('Session'));

    $value_4 = $this->randomName();
    $this->drupalGet('session-test/no-set/' . $value_4);
    $this->assertText($value_4, t('The session value was correctly passed to session-test/no-set.'), t('Session'));
    $this->drupalGet('session-test/get');
    $this->assertText($value_3, t('Session data is not saved for session_save_session(FALSE).'), t('Session'));

    // Logout and get first user back in. Sessions shouldn't persist through
    // logout, so the data won't be on the page.
    $this->drupalLogin($user);
    $this->sessionReset($user->uid);
    $this->drupalGet('session-test/get');
    $this->assertNoText($value_1, t('Session has persisted for an authenticated user after logging out and then back in.'), t('Session'));

    // Logout and create another user.
    $user2 = $this->drupalCreateUser(array('access content'));
    $this->sessionReset($user2->uid);
    $this->drupalLogin($user2);
    $this->session_count_authenticated = $this->session_count++;

    // Perform sess_count tests here in order to use the session data already generated.
    // Test absolute count.
    $anonymous = sess_count(0, TRUE);
    $authenticated = sess_count(0, FALSE);
    $this->assertEqual($anonymous + $authenticated, $this->session_count, t('Correctly counted @count total sessions.', array('@count' => $this->session_count)), t('Session'));

    // Test anonymous count.
    $this->assertEqual($anonymous, $this->session_count_anonymous, t('Correctly counted @count anonymous sessions.', array('@count' => $anonymous)), t('Session'));

    // Test authenticated count.
    $this->assertEqual($authenticated, $this->session_count_authenticated, t('Correctly counted @count authenticated sessions.', array('@count' => $authenticated)), t('Session'));

    // Should return 0 sessions from 1 second from now.
    $this->assertEqual(sess_count(time() + 1), 0, t('Correctly returned 0 sessions newer than the current time.'), t('Session'));

  }

  /**
   * Reset the cookie file so that it refers to the specified user.
   *
   * @param $uid User id to set as the active session.
   */
  function sessionReset($uid = 0) {
    // Close the internal browser.
    $this->curlClose();

    // Change cookie file for user.
    $this->cookie_file = file_directory_temp() . '/cookie.' . $uid . '.txt';
    $this->curl_options[CURLOPT_COOKIEFILE] = $this->cookie_file;
    $this->curl_options[CURLOPT_COOKIESESSION] = TRUE;
    $this->drupalGet('session-test/get');
    $this->assertResponse(200, t('Session test module is correctly enabled.'), t('Session'));
  }
}