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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Tests for ../statslib.php
  19   *
  20   * @package    core_stats
  21   * @category   phpunit
  22   * @copyright  2012 Tyler Bannister
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  global $CFG;
  29  require_once($CFG->libdir . '/adminlib.php');
  30  require_once($CFG->libdir . '/statslib.php');
  31  require_once($CFG->libdir . '/cronlib.php');
  32  require_once (__DIR__ . '/fixtures/stats_events.php');
  33  
  34  /**
  35   * Test functions that affect daily stats.
  36   */
  37  class core_statslib_testcase extends advanced_testcase {
  38      /** The day to use for testing **/
  39      const DAY = 1272672000;
  40  
  41      /** The timezone to use for testing **/
  42      const TIMEZONE = 0;
  43  
  44      /** @var array The list of temporary tables created for the statistic calculations **/
  45      protected $tables = array('temp_log1', 'temp_log2', 'temp_stats_daily', 'temp_stats_user_daily');
  46  
  47      /** @var array The replacements to be used when loading XML files **/
  48      protected $replacements = null;
  49  
  50  
  51      /**
  52       * Setup function
  53       *   - Allow changes to CFG->debug for testing purposes.
  54       */
  55      protected function setUp() {
  56          global $CFG, $DB;
  57          parent::setUp();
  58  
  59          // Settings to force statistic to run during testing.
  60          $CFG->timezone                = self::TIMEZONE;
  61          $CFG->statsfirstrun           = 'all';
  62          $CFG->statslastdaily          = 0;
  63          $CFG->statslastexecution      = 0;
  64  
  65          // Figure out the broken day start so I can figure out when to the start time should be.
  66          $time   = time();
  67          $offset = get_timezone_offset($CFG->timezone);
  68          $stime  = $time + $offset;
  69          $stime  = intval($stime / (60*60*24)) * 60*60*24;
  70          $stime -= $offset;
  71  
  72          $shour  = intval(($time - $stime) / (60*60));
  73  
  74          $CFG->statsruntimestarthour   = $shour;
  75          $CFG->statsruntimestartminute = 0;
  76  
  77          if ($DB->record_exists('user', array('username' => 'user1'))) {
  78              return;
  79          }
  80  
  81          // Set up the database.
  82          $datagen = self::getDataGenerator();
  83  
  84          $user1   = $datagen->create_user(array('username'=>'user1'));
  85          $user2   = $datagen->create_user(array('username'=>'user2'));
  86  
  87          $course1 = $datagen->create_course(array('shortname'=>'course1'));
  88          $datagen->enrol_user($user1->id, $course1->id);
  89  
  90          $this->generate_replacement_list();
  91  
  92          // Reset between tests.
  93          $this->resetAfterTest();
  94      }
  95  
  96      /**
  97       * Function to setup database.
  98       *
  99       * @param array $dataset An array of tables including the log table.
 100       * @param array $tables
 101       */
 102      protected function prepare_db($dataset, $tables) {
 103          global $DB;
 104  
 105          foreach ($tables as $tablename) {
 106              $DB->delete_records($tablename);
 107  
 108              foreach ($dataset as $name => $table) {
 109  
 110                  if ($tablename == $name) {
 111  
 112                      $rows = $table->getRowCount();
 113  
 114                      for ($i = 0; $i < $rows; $i++) {
 115                          $row = $table->getRow($i);
 116  
 117                          $DB->insert_record($tablename, $row, false, true);
 118                      }
 119                  }
 120              }
 121          }
 122      }
 123  
 124      /**
 125       * Load dataset from XML file.
 126       */
 127      protected function generate_replacement_list() {
 128          global $CFG, $DB;
 129  
 130          if ($this->replacements !== null) {
 131              return;
 132          }
 133  
 134          $CFG->timezone = self::TIMEZONE;
 135  
 136          $guest = $DB->get_record('user', array('id' => $CFG->siteguest));
 137          $user1 = $DB->get_record('user', array('username' => 'user1'));
 138          $user2 = $DB->get_record('user', array('username' => 'user2'));
 139  
 140          if (($guest === false) || ($user1 === false) || ($user2 === false)) {
 141              trigger_error('User setup incomplete', E_USER_ERROR);
 142          }
 143  
 144          $site    = $DB->get_record('course', array('id' => SITEID));
 145          $course1 = $DB->get_record('course', array('shortname' => 'course1'));
 146  
 147          if (($site === false) || ($course1 === false)) {
 148              trigger_error('Course setup incomplete', E_USER_ERROR);
 149          }
 150  
 151          $offset = get_timezone_offset($CFG->timezone);
 152  
 153          $start      = stats_get_base_daily(self::DAY + 3600);
 154          $startnolog = stats_get_base_daily(stats_get_start_from('daily'));
 155          $gr         = get_guest_role();
 156          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 157  
 158          $this->replacements = array(
 159              // Start and end times.
 160              '[start_0]'          => $start -  14410,  // 4 hours before.
 161              '[start_1]'          => $start +  14410,  // 4 hours after.
 162              '[start_2]'          => $start +  14420,
 163              '[start_3]'          => $start +  14430,
 164              '[start_4]'          => $start + 100800, // 28 hours after.
 165              '[end]'              => stats_get_next_day_start($start),
 166              '[end_no_logs]'      => stats_get_next_day_start($startnolog),
 167  
 168              // User ids.
 169              '[guest_id]'         => $guest->id,
 170              '[user1_id]'         => $user1->id,
 171              '[user2_id]'         => $user2->id,
 172  
 173              // Course ids.
 174              '[course1_id]'       => $course1->id,
 175              '[site_id]'          => SITEID,
 176  
 177              // Role ids.
 178              '[frontpage_roleid]' => (int) $CFG->defaultfrontpageroleid,
 179              '[guest_roleid]'     => $gr->id,
 180              '[student_roleid]'   => $studentrole->id,
 181          );
 182      }
 183  
 184      /**
 185       * Load dataset from XML file.
 186       *
 187       * @param string $file The name of the file to load
 188       * @return array
 189       */
 190      protected function load_xml_data_file($file) {
 191          static $replacements = null;
 192  
 193          $raw   = $this->createXMLDataSet($file);
 194          $clean = new PHPUnit_Extensions_Database_DataSet_ReplacementDataSet($raw);
 195  
 196          foreach ($this->replacements as $placeholder => $value) {
 197              $clean->addFullReplacement($placeholder, $value);
 198          }
 199  
 200          $logs = new PHPUnit_Extensions_Database_DataSet_DataSetFilter($clean);
 201          $logs->addIncludeTables(array('log'));
 202  
 203          $stats = new PHPUnit_Extensions_Database_DataSet_DataSetFilter($clean);
 204          $stats->addIncludeTables(array('stats_daily', 'stats_user_daily'));
 205  
 206          return array($logs, $stats);
 207      }
 208  
 209      /**
 210       * Provides the log data for test_statslib_cron_daily.
 211       *
 212       * @return array of fixture XML log file names.
 213       */
 214      public function daily_log_provider() {
 215          $logfiles = array();
 216          $fileno = array('00', '01', '02', '03', '04', '05', '06', '07', '08');
 217  
 218          foreach ($fileno as $no) {
 219              $logfiles[] = array("statslib-test{$no}.xml");
 220          }
 221  
 222          return $logfiles;
 223      }
 224  
 225      /**
 226       * Compare the expected stats to those in the database.
 227       *
 228       * @param array $expected
 229       * @param string $output
 230       */
 231      protected function verify_stats($expected, $output = '') {
 232          global $DB;
 233  
 234          // Note: We can not use $this->assertDataSetEqual($expected, $actual) because there's no
 235          //       $this->getConnection() in advanced_testcase.
 236  
 237          foreach ($expected as $type => $table) {
 238              $records = $DB->get_records($type);
 239  
 240              $rows = $table->getRowCount();
 241  
 242              $message = 'Incorrect number of results returned for '. $type;
 243  
 244              if ($output != '') {
 245                  $message .= "\nCron output:\n$output";
 246              }
 247  
 248              $this->assertCount($rows, $records, $message);
 249  
 250              for ($i = 0; $i < $rows; $i++) {
 251                  $row   = $table->getRow($i);
 252                  $found = 0;
 253  
 254                  foreach ($records as $key => $record) {
 255                      $record = (array) $record;
 256                      unset($record['id']);
 257                      $diff = array_merge(array_diff_assoc($row, $record),
 258                              array_diff_assoc($record, $row));
 259  
 260                      if (empty($diff)) {
 261                          $found = $key;
 262                          break;
 263                      }
 264                  }
 265  
 266                  $this->assertGreaterThan(0, $found, 'Expected log '. var_export($row, true)
 267                                          ." was not found in $type ". var_export($records, true));
 268                  unset($records[$found]);
 269              }
 270          }
 271      }
 272  
 273      /**
 274       * Test progress output when debug is on.
 275       */
 276      public function test_statslib_progress_debug() {
 277          set_debugging(DEBUG_ALL);
 278          $this->expectOutputString('1:0 ');
 279          stats_progress('init');
 280          stats_progress('1');
 281          $this->resetDebugging();
 282      }
 283  
 284      /**
 285       * Test progress output when debug is off.
 286       */
 287      public function test_statslib_progress_no_debug() {
 288          set_debugging(DEBUG_NONE);
 289          $this->expectOutputString('.');
 290          stats_progress('init');
 291          stats_progress('1');
 292          $this->resetDebugging();
 293      }
 294  
 295      /**
 296       * Test the function that gets the start date from the config.
 297       */
 298      public function test_statslib_get_start_from() {
 299          global $CFG, $DB;
 300  
 301          $dataset = $this->load_xml_data_file(__DIR__."/fixtures/statslib-test01.xml");
 302          $time = time();
 303          $DB->delete_records('log');
 304  
 305          // Don't ask.  I don't think get_timezone_offset works correctly.
 306          $day = self::DAY - get_timezone_offset($CFG->timezone);
 307  
 308          $CFG->statsfirstrun = 'all';
 309          // Allow 1 second difference in case we cross a second boundary.
 310          // Note: within 3 days of a DST change - -3 days != 3 * 24 hours (it may be more or less).
 311          $this->assertLessThanOrEqual(1, stats_get_start_from('daily') - strtotime('-3 days', $time), 'All start time');
 312  
 313          $this->prepare_db($dataset[0], array('log'));
 314          $records = $DB->get_records('log');
 315  
 316          $this->assertEquals($day + 14410, stats_get_start_from('daily'), 'Log entry start');
 317  
 318          $CFG->statsfirstrun = 'none';
 319          $this->assertLessThanOrEqual(1, stats_get_start_from('daily') - strtotime('-3 days', $time), 'None start time');
 320  
 321          $CFG->statsfirstrun = 14515200;
 322          $this->assertLessThanOrEqual(1, stats_get_start_from('daily') - ($time - (14515200)), 'Specified start time');
 323  
 324          $this->prepare_db($dataset[1], array('stats_daily'));
 325          $this->assertEquals($day + (24 * 3600), stats_get_start_from('daily'), 'Daily stats start time');
 326  
 327          // New log stores.
 328          $this->preventResetByRollback();
 329  
 330          $this->assertFileExists("$CFG->dirroot/$CFG->admin/tool/log/store/standard/version.php");
 331          set_config('enabled_stores', 'logstore_standard', 'tool_log');
 332          set_config('buffersize', 0, 'logstore_standard');
 333          set_config('logguests', 1, 'logstore_standard');
 334          get_log_manager(true);
 335  
 336          $this->assertEquals(0, $DB->count_records('logstore_standard_log'));
 337  
 338          $DB->delete_records('stats_daily');
 339          $CFG->statsfirstrun = 'all';
 340          $firstoldtime = $DB->get_field_sql('SELECT MIN(time) FROM {log}');
 341  
 342          $this->assertEquals($firstoldtime, stats_get_start_from('daily'));
 343  
 344          \core_tests\event\create_executed::create(array('context' => context_system::instance()))->trigger();
 345          \core_tests\event\read_executed::create(array('context' => context_system::instance()))->trigger();
 346          \core_tests\event\update_executed::create(array('context' => context_system::instance()))->trigger();
 347          \core_tests\event\delete_executed::create(array('context' => context_system::instance()))->trigger();
 348  
 349          // Fake the origin of events.
 350          $DB->set_field('logstore_standard_log', 'origin', 'web', array());
 351  
 352          $logs = $DB->get_records('logstore_standard_log');
 353          $this->assertCount(4, $logs);
 354  
 355          $firstnew = reset($logs);
 356          $this->assertGreaterThan($firstoldtime, $firstnew->timecreated);
 357          $DB->set_field('logstore_standard_log', 'timecreated', 10, array('id' => $firstnew->id));
 358          $this->assertEquals(10, stats_get_start_from('daily'));
 359  
 360          $DB->set_field('logstore_standard_log', 'timecreated', $firstnew->timecreated, array('id' => $firstnew->id));
 361          $DB->delete_records('log');
 362          $this->assertEquals($firstnew->timecreated, stats_get_start_from('daily'));
 363  
 364          set_config('enabled_stores', '', 'tool_log');
 365          get_log_manager(true);
 366      }
 367  
 368      /**
 369       * Test the function that calculates the start of the day.
 370       *
 371       * NOTE: I don't think this is the way this function should work.
 372       *       This test documents the current functionality.
 373       */
 374      public function test_statslib_get_base_daily() {
 375          global $CFG;
 376  
 377          for ($x = 0; $x < 24; $x += 1) {
 378              $CFG->timezone = $x;
 379  
 380              $start = 1272672000 - ($x * 3600);
 381              if ($x >= 20) {
 382                  $start += (24 * 3600);
 383              }
 384  
 385              $this->assertEquals($start, stats_get_base_daily(1272686410), "Timezone $x check");
 386          }
 387      }
 388  
 389      /**
 390       * Test the function that gets the start of the next day.
 391       */
 392      public function test_statslib_get_next_day_start() {
 393          global $CFG;
 394  
 395          $CFG->timezone = 0;
 396          $this->assertEquals(1272758400, stats_get_next_day_start(1272686410));
 397      }
 398  
 399      /**
 400       * Test the function that gets the action names.
 401       *
 402       * Note: The function results depend on installed modules.  The hard coded lists are the
 403       *       defaults for a new Moodle 2.3 install.
 404       */
 405      public function test_statslib_get_action_names() {
 406          $basepostactions = array (
 407              0 => 'add',
 408              1 => 'delete',
 409              2 => 'edit',
 410              3 => 'add mod',
 411              4 => 'delete mod',
 412              5 => 'edit sectionenrol',
 413              6 => 'loginas',
 414              7 => 'new',
 415              8 => 'unenrol',
 416              9 => 'update',
 417              10 => 'update mod',
 418              11 => 'upload',
 419              12 => 'submit',
 420              13 => 'submit for grading',
 421              14 => 'talk',
 422              15 => 'choose',
 423              16 => 'choose again',
 424              17 => 'record delete',
 425              18 => 'add discussion',
 426              19 => 'add post',
 427              20 => 'delete discussion',
 428              21 => 'delete post',
 429              22 => 'move discussion',
 430              23 => 'prune post',
 431              24 => 'update post',
 432              25 => 'add category',
 433              26 => 'add entry',
 434              27 => 'approve entry',
 435              28 => 'delete category',
 436              29 => 'delete entry',
 437              30 => 'edit category',
 438              31 => 'update entry',
 439              32 => 'end',
 440              33 => 'start',
 441              34 => 'attempt',
 442              35 => 'close attempt',
 443              36 => 'preview',
 444              37 => 'editquestions',
 445              38 => 'delete attempt',
 446              39 => 'manualgrade',
 447          );
 448  
 449           $baseviewactions = array (
 450              0 => 'view',
 451              1 => 'view all',
 452              2 => 'history',
 453              3 => 'view submission',
 454              4 => 'view feedback',
 455              5 => 'print',
 456              6 => 'report',
 457              7 => 'view discussion',
 458              8 => 'search',
 459              9 => 'forum',
 460              10 => 'forums',
 461              11 => 'subscribers',
 462              12 => 'view forum',
 463              13 => 'view entry',
 464              14 => 'review',
 465              15 => 'pre-view',
 466              16 => 'download',
 467              17 => 'view form',
 468              18 => 'view graph',
 469              19 => 'view report',
 470          );
 471  
 472          $postactions = stats_get_action_names('post');
 473  
 474          foreach ($basepostactions as $action) {
 475              $this->assertContains($action, $postactions);
 476          }
 477  
 478          $viewactions = stats_get_action_names('view');
 479  
 480          foreach ($baseviewactions as $action) {
 481              $this->assertContains($action, $viewactions);
 482          }
 483      }
 484  
 485      /**
 486       * Test the temporary table creation and deletion.
 487       */
 488      public function test_statslib_temp_table_create_and_drop() {
 489          global $DB;
 490  
 491          foreach ($this->tables as $table) {
 492              $this->assertFalse($DB->get_manager()->table_exists($table));
 493          }
 494  
 495          stats_temp_table_create();
 496  
 497          foreach ($this->tables as $table) {
 498              $this->assertTrue($DB->get_manager()->table_exists($table));
 499          }
 500  
 501          stats_temp_table_drop();
 502  
 503          foreach ($this->tables as $table) {
 504              $this->assertFalse($DB->get_manager()->table_exists($table));
 505          }
 506      }
 507  
 508      /**
 509       * Test the temporary table creation and deletion.
 510       *
 511       * @depends test_statslib_temp_table_create_and_drop
 512       */
 513      public function test_statslib_temp_table_fill() {
 514          global $CFG, $DB, $USER;
 515  
 516          $dataset = $this->load_xml_data_file(__DIR__."/fixtures/statslib-test09.xml");
 517  
 518          $this->prepare_db($dataset[0], array('log'));
 519  
 520          $start = self::DAY - get_timezone_offset($CFG->timezone);
 521          $end   = $start + (24 * 3600);
 522  
 523          stats_temp_table_create();
 524          stats_temp_table_fill($start, $end);
 525  
 526          $this->assertEquals(1, $DB->count_records('temp_log1'));
 527          $this->assertEquals(1, $DB->count_records('temp_log2'));
 528  
 529          stats_temp_table_drop();
 530  
 531          // New log stores.
 532          $this->preventResetByRollback();
 533          stats_temp_table_create();
 534  
 535          $course = $this->getDataGenerator()->create_course();
 536          $context = context_course::instance($course->id);
 537          $fcontext = context_course::instance(SITEID);
 538          $user = $this->getDataGenerator()->create_user();
 539          $this->setUser($user);
 540  
 541          $this->assertFileExists("$CFG->dirroot/$CFG->admin/tool/log/store/standard/version.php");
 542          set_config('enabled_stores', 'logstore_standard', 'tool_log');
 543          set_config('buffersize', 0, 'logstore_standard');
 544          set_config('logguests', 1, 'logstore_standard');
 545          get_log_manager(true);
 546  
 547          $DB->delete_records('logstore_standard_log');
 548  
 549          \core_tests\event\create_executed::create(array('context' => $fcontext, 'courseid' => SITEID))->trigger();
 550          \core_tests\event\read_executed::create(array('context' => $context, 'courseid' => $course->id))->trigger();
 551          \core_tests\event\update_executed::create(array('context' => context_system::instance()))->trigger();
 552          \core_tests\event\delete_executed::create(array('context' => context_system::instance()))->trigger();
 553  
 554          \core\event\user_loggedin::create(
 555              array(
 556                  'userid' => $USER->id,
 557                  'objectid' => $USER->id,
 558                  'other' => array('username' => $USER->username),
 559              )
 560          )->trigger();
 561  
 562          $DB->set_field('logstore_standard_log', 'timecreated', 10);
 563  
 564          $this->assertEquals(5, $DB->count_records('logstore_standard_log'));
 565  
 566          \core_tests\event\delete_executed::create(array('context' => context_system::instance()))->trigger();
 567          \core_tests\event\delete_executed::create(array('context' => context_system::instance()))->trigger();
 568  
 569          // Fake the origin of events.
 570          $DB->set_field('logstore_standard_log', 'origin', 'web', array());
 571  
 572          $this->assertEquals(7, $DB->count_records('logstore_standard_log'));
 573  
 574          stats_temp_table_fill(9, 11);
 575  
 576          $logs1 = $DB->get_records('temp_log1');
 577          $logs2 = $DB->get_records('temp_log2');
 578          $this->assertCount(5, $logs1);
 579          $this->assertCount(5, $logs2);
 580          // The order of records in the temp tables is not guaranteed...
 581  
 582          $viewcount = 0;
 583          $updatecount = 0;
 584          $logincount = 0;
 585          foreach ($logs1 as $log) {
 586              if ($log->course == $course->id) {
 587                  $this->assertEquals('view', $log->action);
 588                  $viewcount++;
 589              } else {
 590                  $this->assertTrue(in_array($log->action, array('update', 'login')));
 591                  if ($log->action === 'update') {
 592                      $updatecount++;
 593                  } else {
 594                      $logincount++;
 595                  }
 596                  $this->assertEquals(SITEID, $log->course);
 597              }
 598              $this->assertEquals($user->id, $log->userid);
 599          }
 600          $this->assertEquals(1, $viewcount);
 601          $this->assertEquals(3, $updatecount);
 602          $this->assertEquals(1, $logincount);
 603  
 604          set_config('enabled_stores', '', 'tool_log');
 605          get_log_manager(true);
 606          stats_temp_table_drop();
 607      }
 608  
 609      /**
 610       * Test the temporary table creation and deletion.
 611       *
 612       * @depends test_statslib_temp_table_create_and_drop
 613       */
 614      public function test_statslib_temp_table_setup() {
 615          global $DB;
 616  
 617          $logs = array();
 618          $this->prepare_db($logs, array('log'));
 619  
 620          stats_temp_table_create();
 621          stats_temp_table_setup();
 622  
 623          $this->assertEquals(1, $DB->count_records('temp_enroled'));
 624  
 625          stats_temp_table_drop();
 626      }
 627  
 628      /**
 629       * Test the function that clean out the temporary tables.
 630       *
 631       * @depends test_statslib_temp_table_create_and_drop
 632       */
 633      public function test_statslib_temp_table_clean() {
 634          global $DB;
 635  
 636          $rows = array(
 637              'temp_log1'             => array('id' => 1, 'course' => 1),
 638              'temp_log2'             => array('id' => 1, 'course' => 1),
 639              'temp_stats_daily'      => array('id' => 1, 'courseid' => 1),
 640              'temp_stats_user_daily' => array('id' => 1, 'courseid' => 1),
 641          );
 642  
 643          stats_temp_table_create();
 644  
 645          foreach ($rows as $table => $row) {
 646              $DB->insert_record_raw($table, $row);
 647              $this->assertEquals(1, $DB->count_records($table));
 648          }
 649  
 650          stats_temp_table_clean();
 651  
 652          foreach ($rows as $table => $row) {
 653              $this->assertEquals(0, $DB->count_records($table));
 654          }
 655  
 656          $this->assertEquals(1, $DB->count_records('stats_daily'));
 657          $this->assertEquals(1, $DB->count_records('stats_user_daily'));
 658  
 659          stats_temp_table_drop();
 660      }
 661  
 662      /**
 663       * Test the daily stats function.
 664       *
 665       * @depends test_statslib_get_base_daily
 666       * @depends test_statslib_get_next_day_start
 667       * @depends test_statslib_get_start_from
 668       * @depends test_statslib_temp_table_create_and_drop
 669       * @depends test_statslib_temp_table_setup
 670       * @depends test_statslib_temp_table_fill
 671       * @dataProvider daily_log_provider
 672       */
 673      public function test_statslib_cron_daily($xmlfile) {
 674          global $CFG, $DB;
 675  
 676          $dataset = $this->load_xml_data_file(__DIR__."/fixtures/{$xmlfile}");
 677  
 678          list($logs, $stats) = $dataset;
 679          $this->prepare_db($logs, array('log'));
 680  
 681          // Stats cron daily uses mtrace, turn on buffering to silence output.
 682          ob_start();
 683          stats_cron_daily(1);
 684          $output = ob_get_contents();
 685          ob_end_clean();
 686  
 687          $this->verify_stats($stats, $output);
 688      }
 689  
 690      /**
 691       * Test the daily stats function.
 692       *
 693       * @depends test_statslib_get_base_daily
 694       * @depends test_statslib_get_next_day_start
 695       */
 696      public function test_statslib_cron_daily_no_default_profile_id() {
 697          global $CFG, $DB;
 698          $CFG->defaultfrontpageroleid = 0;
 699  
 700          $course1  = $DB->get_record('course', array('shortname' => 'course1'));
 701          $guestid  = $CFG->siteguest;
 702          $start    = stats_get_base_daily(1272758400);
 703          $end      = stats_get_next_day_start($start);
 704          $fpid     = (int) $CFG->defaultfrontpageroleid;
 705          $gr       = get_guest_role();
 706  
 707          $dataset = $this->load_xml_data_file(__DIR__."/fixtures/statslib-test10.xml");
 708  
 709          $this->prepare_db($dataset[0], array('log'));
 710  
 711          // Stats cron daily uses mtrace, turn on buffering to silence output.
 712          ob_start();
 713          stats_cron_daily($maxdays=1);
 714          $output = ob_get_contents();
 715          ob_end_clean();
 716  
 717          $this->verify_stats($dataset[1], $output);
 718      }
 719  }