<?php
// $Id: poormanscron.test,v 1.3 2010-01-18 19:50:51 davereid Exp $

/**
 * @file
 * Unit tests for the poormanscron module.
 */

class PoormanscronUnitTest extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Poormanscron functionality',
      'description' => 'Tests the poormanscron module.',
      'group' => 'Poormanscron',
    );
  }

  function setUp() {
    parent::setUp('poormanscron');
    $this->admin_user = $this->drupalCreateUser(array('administer site configuration'));
  }

  /**
   * Ensure that the cron image callback to run it automatically is working.
   *
   * In these tests we do not use REQUEST_TIME to track start time, because we
   * need the exact time when cron is triggered.
   */
  function testCronThreshold() {
    // Ensure cron does not run when the cron threshold is enabled and was
    // not passed.
    $cron_last = time();
    $cron_safe_threshold = 100;
    variable_set('cron_last', $cron_last);
    variable_set('cron_safe_threshold', $cron_safe_threshold);
    $this->drupalGet('');
    $this->assertRaw('"runNext":' . ($cron_last + $cron_safe_threshold));
    $this->drupalGet('poormanscron/run-cron-check');
    $this->assertExpiresHeader($cron_last + $cron_safe_threshold);
    $this->assertTrue($cron_last == variable_get('cron_last', 0), t('Cron does not run when the cron threshold is not passed.'));

    // Test if cron runs when the cron threshold was passed.
    $cron_last = time() - 200;
    variable_set('cron_last', $cron_last);
    $this->drupalGet('');
    $this->assertRaw('"runNext":' . ($cron_last + $cron_safe_threshold));
    $this->drupalGet('poormanscron/run-cron-check');
    $this->assertExpiresHeader(variable_get('cron_last', 0) + $cron_safe_threshold);
    $this->assertTrue($cron_last < variable_get('cron_last', 0), t('Cron runs when the cron threshold is passed.'));

    // Disable the cron threshold through the interface.
    $this->drupalLogin($this->admin_user);
    $this->drupalPost('admin/config/system/site-information', array('cron_safe_threshold' => 0), t('Save configuration'));
    $this->assertText(t('The configuration options have been saved.'));
    $this->drupalLogout();

    // Test if cron does not run when the cron threshold is disabled.
    $cron_last = time() - 200;
    variable_set('cron_last', $cron_last);
    $this->drupalGet('');
    $this->assertNoRaw('runNext');
    $this->drupalGet('poormanscron/run-cron-check');
    $this->assertResponse(403);
    $this->assertTrue($cron_last == variable_get('cron_last', NULL), t('Cron does not run when the cron threshold is disabled.'));
  }

  /**
   * Assert that the Expires header is a specific timestamp.
   *
   * @param $timestamp
   *   The timestamp value to match against the header.
   */
  private function assertExpiresHeader($timestamp) {
    $expires = $this->drupalGetHeader('Expires');
    $expires = strtotime($expires);
    $this->assertEqual($expires, $timestamp, t('Expires header expected @expected got @actual.', array('@expected' => $timestamp, '@actual' => $expires)));
  }
}