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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          $this->setTimezone(self::TIMEZONE);
  61          core_date::set_default_server_timezone();
  62          $CFG->statsfirstrun           = 'all';
  63          $CFG->statslastdaily          = 0;
  64          $CFG->statslastexecution      = 0;
  65  
  66          // Figure out the broken day start so I can figure out when to the start time should be.
  67          $time   = time();
  68          // This nonsense needs to be rewritten.
  69          $date = new DateTime('now', core_date::get_server_timezone_object());
  70          $offset = $date->getOffset();
  71          $stime  = $time + $offset;
  72          $stime  = intval($stime / (60*60*24)) * 60*60*24;
  73          $stime -= $offset;
  74  
  75          $shour  = intval(($time - $stime) / (60*60));
  76  
  77          $CFG->statsruntimestarthour   = $shour;
  78          $CFG->statsruntimestartminute = 0;
  79  
  80          if ($DB->record_exists('user', array('username' => 'user1'))) {
  81              return;
  82          }
  83  
  84          // Set up the database.
  85          $datagen = self::getDataGenerator();
  86  
  87          $user1   = $datagen->create_user(array('username'=>'user1'));
  88          $user2   = $datagen->create_user(array('username'=>'user2'));
  89  
  90          $course1 = $datagen->create_course(array('shortname'=>'course1'));
  91          $datagen->enrol_user($user1->id, $course1->id);
  92  
  93          $this->generate_replacement_list();
  94  
  95          // Reset between tests.
  96          $this->resetAfterTest();
  97      }
  98  
  99      /**
 100       * Function to setup database.
 101       *
 102       * @param array $dataset An array of tables including the log table.
 103       * @param array $tables
 104       */
 105      protected function prepare_db($dataset, $tables) {
 106          global $DB;
 107  
 108          foreach ($tables as $tablename) {
 109              $DB->delete_records($tablename);
 110  
 111              foreach ($dataset as $name => $table) {
 112  
 113                  if ($tablename == $name) {
 114  
 115                      $rows = $table->getRowCount();
 116  
 117                      for ($i = 0; $i < $rows; $i++) {
 118                          $row = $table->getRow($i);
 119  
 120                          $DB->insert_record($tablename, $row, false, true);
 121                      }
 122                  }
 123              }
 124          }
 125      }
 126  
 127      /**
 128       * Load dataset from XML file.
 129       */
 130      protected function generate_replacement_list() {
 131          global $CFG, $DB;
 132  
 133          if ($this->replacements !== null) {
 134              return;
 135          }
 136  
 137          $this->setTimezone(self::TIMEZONE);
 138  
 139          $guest = $DB->get_record('user', array('id' => $CFG->siteguest));
 140          $user1 = $DB->get_record('user', array('username' => 'user1'));
 141          $user2 = $DB->get_record('user', array('username' => 'user2'));
 142  
 143          if (($guest === false) || ($user1 === false) || ($user2 === false)) {
 144              trigger_error('User setup incomplete', E_USER_ERROR);
 145          }
 146  
 147          $site    = $DB->get_record('course', array('id' => SITEID));
 148          $course1 = $DB->get_record('course', array('shortname' => 'course1'));
 149  
 150          if (($site === false) || ($course1 === false)) {
 151              trigger_error('Course setup incomplete', E_USER_ERROR);
 152          }
 153  
 154          $start      = stats_get_base_daily(self::DAY + 3600);
 155          $startnolog = stats_get_base_daily(stats_get_start_from('daily'));
 156          $gr         = get_guest_role();
 157          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 158  
 159          $this->replacements = array(
 160              // Start and end times.
 161              '[start_0]'          => $start -  14410,  // 4 hours before.
 162              '[start_1]'          => $start +  14410,  // 4 hours after.
 163              '[start_2]'          => $start +  14420,
 164              '[start_3]'          => $start +  14430,
 165              '[start_4]'          => $start + 100800, // 28 hours after.
 166              '[end]'              => stats_get_next_day_start($start),
 167              '[end_no_logs]'      => stats_get_next_day_start($startnolog),
 168  
 169              // User ids.
 170              '[guest_id]'         => $guest->id,
 171              '[user1_id]'         => $user1->id,
 172              '[user2_id]'         => $user2->id,
 173  
 174              // Course ids.
 175              '[course1_id]'       => $course1->id,
 176              '[site_id]'          => SITEID,
 177  
 178              // Role ids.
 179              '[frontpage_roleid]' => (int) $CFG->defaultfrontpageroleid,
 180              '[guest_roleid]'     => $gr->id,
 181              '[student_roleid]'   => $studentrole->id,
 182          );
 183      }
 184  
 185      /**
 186       * Load dataset from XML file.
 187       *
 188       * @param string $file The name of the file to load
 189       * @return array
 190       */
 191      protected function load_xml_data_file($file) {
 192          static $replacements = null;
 193  
 194          $raw   = $this->createXMLDataSet($file);
 195          $clean = new PHPUnit_Extensions_Database_DataSet_ReplacementDataSet($raw);
 196  
 197          foreach ($this->replacements as $placeholder => $value) {
 198              $clean->addFullReplacement($placeholder, $value);
 199          }
 200  
 201          $logs = new PHPUnit_Extensions_Database_DataSet_DataSetFilter($clean);
 202          $logs->addIncludeTables(array('log'));
 203  
 204          $stats = new PHPUnit_Extensions_Database_DataSet_DataSetFilter($clean);
 205          $stats->addIncludeTables(array('stats_daily', 'stats_user_daily'));
 206  
 207          return array($logs, $stats);
 208      }
 209  
 210      /**
 211       * Provides the log data for test_statslib_cron_daily.
 212       *
 213       * @return array of fixture XML log file names.
 214       */
 215      public function daily_log_provider() {
 216          $logfiles = array();
 217          $fileno = array('00', '01', '02', '03', '04', '05', '06', '07', '08');
 218  
 219          foreach ($fileno as $no) {
 220              $logfiles[] = array("statslib-test{$no}.xml");
 221          }
 222  
 223          return $logfiles;
 224      }
 225  
 226      /**
 227       * Compare the expected stats to those in the database.
 228       *
 229       * @param array $expected
 230       * @param string $output
 231       */
 232      protected function verify_stats($expected, $output = '') {
 233          global $DB;
 234  
 235          // Note: We can not use $this->assertDataSetEqual($expected, $actual) because there's no
 236          //       $this->getConnection() in advanced_testcase.
 237  
 238          foreach ($expected as $type => $table) {
 239              $records = $DB->get_records($type);
 240  
 241              $rows = $table->getRowCount();
 242  
 243              $message = 'Incorrect number of results returned for '. $type;
 244  
 245              if ($output != '') {
 246                  $message .= "\nCron output:\n$output";
 247              }
 248  
 249              $this->assertCount($rows, $records, $message);
 250  
 251              for ($i = 0; $i < $rows; $i++) {
 252                  $row   = $table->getRow($i);
 253                  $found = 0;
 254  
 255                  foreach ($records as $key => $record) {
 256                      $record = (array) $record;
 257                      unset($record['id']);
 258                      $diff = array_merge(array_diff_assoc($row, $record),
 259                              array_diff_assoc($record, $row));
 260  
 261                      if (empty($diff)) {
 262                          $found = $key;
 263                          break;
 264                      }
 265                  }
 266  
 267                  $this->assertGreaterThan(0, $found, 'Expected log '. var_export($row, true)
 268                                          ." was not found in $type ". var_export($records, true));
 269                  unset($records[$found]);
 270              }
 271          }
 272      }
 273  
 274      /**
 275       * Test progress output when debug is on.
 276       */
 277      public function test_statslib_progress_debug() {
 278          set_debugging(DEBUG_ALL);
 279          $this->expectOutputString('1:0 ');
 280          stats_progress('init');
 281          stats_progress('1');
 282          $this->resetDebugging();
 283      }
 284  
 285      /**
 286       * Test progress output when debug is off.
 287       */
 288      public function test_statslib_progress_no_debug() {
 289          set_debugging(DEBUG_NONE);
 290          $this->expectOutputString('.');
 291          stats_progress('init');
 292          stats_progress('1');
 293          $this->resetDebugging();
 294      }
 295  
 296      /**
 297       * Test the function that gets the start date from the config.
 298       */
 299      public function test_statslib_get_start_from() {
 300          global $CFG, $DB;
 301  
 302          $dataset = $this->load_xml_data_file(__DIR__."/fixtures/statslib-test01.xml");
 303          $DB->delete_records('log');
 304  
 305          $date = new DateTime('now', core_date::get_server_timezone_object());
 306          $day = self::DAY - $date->getOffset();
 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 + DAYSECS, 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 < 13; $x += 1) {
 378              $this->setTimezone($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          $this->setTimezone(0);
 394          $this->assertEquals(1272758400, stats_get_next_day_start(1272686410));
 395      }
 396  
 397      /**
 398       * Test the function that gets the action names.
 399       *
 400       * Note: The function results depend on installed modules.  The hard coded lists are the
 401       *       defaults for a new Moodle 2.3 install.
 402       */
 403      public function test_statslib_get_action_names() {
 404          $basepostactions = array (
 405              0 => 'add',
 406              1 => 'delete',
 407              2 => 'edit',
 408              3 => 'add mod',
 409              4 => 'delete mod',
 410              5 => 'edit sectionenrol',
 411              6 => 'loginas',
 412              7 => 'new',
 413              8 => 'unenrol',
 414              9 => 'update',
 415              10 => 'update mod',
 416              11 => 'upload',
 417              12 => 'submit',
 418              13 => 'submit for grading',
 419              14 => 'talk',
 420              15 => 'choose',
 421              16 => 'choose again',
 422              17 => 'record delete',
 423              18 => 'add discussion',
 424              19 => 'add post',
 425              20 => 'delete discussion',
 426              21 => 'delete post',
 427              22 => 'move discussion',
 428              23 => 'prune post',
 429              24 => 'update post',
 430              25 => 'add category',
 431              26 => 'add entry',
 432              27 => 'approve entry',
 433              28 => 'delete category',
 434              29 => 'delete entry',
 435              30 => 'edit category',
 436              31 => 'update entry',
 437              32 => 'end',
 438              33 => 'start',
 439              34 => 'attempt',
 440              35 => 'close attempt',
 441              36 => 'preview',
 442              37 => 'editquestions',
 443              38 => 'delete attempt',
 444              39 => 'manualgrade',
 445          );
 446  
 447           $baseviewactions = array (
 448              0 => 'view',
 449              1 => 'view all',
 450              2 => 'history',
 451              3 => 'view submission',
 452              4 => 'view feedback',
 453              5 => 'print',
 454              6 => 'report',
 455              7 => 'view discussion',
 456              8 => 'search',
 457              9 => 'forum',
 458              10 => 'forums',
 459              11 => 'subscribers',
 460              12 => 'view forum',
 461              13 => 'view entry',
 462              14 => 'review',
 463              15 => 'pre-view',
 464              16 => 'download',
 465              17 => 'view form',
 466              18 => 'view graph',
 467              19 => 'view report',
 468          );
 469  
 470          $postactions = stats_get_action_names('post');
 471  
 472          foreach ($basepostactions as $action) {
 473              $this->assertContains($action, $postactions);
 474          }
 475  
 476          $viewactions = stats_get_action_names('view');
 477  
 478          foreach ($baseviewactions as $action) {
 479              $this->assertContains($action, $viewactions);
 480          }
 481      }
 482  
 483      /**
 484       * Test the temporary table creation and deletion.
 485       */
 486      public function test_statslib_temp_table_create_and_drop() {
 487          global $DB;
 488  
 489          foreach ($this->tables as $table) {
 490              $this->assertFalse($DB->get_manager()->table_exists($table));
 491          }
 492  
 493          stats_temp_table_create();
 494  
 495          foreach ($this->tables as $table) {
 496              $this->assertTrue($DB->get_manager()->table_exists($table));
 497          }
 498  
 499          stats_temp_table_drop();
 500  
 501          foreach ($this->tables as $table) {
 502              $this->assertFalse($DB->get_manager()->table_exists($table));
 503          }
 504      }
 505  
 506      /**
 507       * Test the temporary table creation and deletion.
 508       *
 509       * @depends test_statslib_temp_table_create_and_drop
 510       */
 511      public function test_statslib_temp_table_fill() {
 512          global $CFG, $DB, $USER;
 513  
 514          $dataset = $this->load_xml_data_file(__DIR__."/fixtures/statslib-test09.xml");
 515  
 516          $this->prepare_db($dataset[0], array('log'));
 517  
 518          // This nonsense needs to be rewritten.
 519          $date = new DateTime('now', core_date::get_server_timezone_object());
 520          $start = self::DAY - $date->getOffset();
 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  }