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Differences Between: [Versions 310 and 311] [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403]

   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 {@link decompose_update_into_safe_changes()} and
  19   * {@link update_field_with_unique_index()}.
  20   *
  21   * @package   core
  22   * @copyright 2014 The Open University
  23   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  
  29  /**
  30   * Tests for {@link decompose_update_into_safe_changes()} and
  31   * {@link update_field_with_unique_index()}.
  32   *
  33   * @copyright 2014 The Open University
  34   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class datalib_update_with_unique_index_testcase extends advanced_testcase {
  37  
  38      public function test_decompose_update_into_safe_changes_identity() {
  39          $this->assertEquals(array(), decompose_update_into_safe_changes(
  40                  array(1 => 1, 2 => 2), -1));
  41      }
  42  
  43      public function test_decompose_update_into_safe_changes_no_overlap() {
  44          $this->assertEquals(array(array(1, 3), array(2, 4)), decompose_update_into_safe_changes(
  45                  array(1 => 3, 2 => 4), -1));
  46      }
  47  
  48      public function test_decompose_update_into_safe_changes_shift() {
  49          $this->assertSame(array(array(3, 4), array(2, 3), array(1, 2)), decompose_update_into_safe_changes(
  50                  array(1 => 2, 2 => 3, 3 => 4), -1));
  51      }
  52  
  53      public function test_decompose_decompose_update_into_safe_changes_simple_swap() {
  54          $this->assertEquals(array(array(1, -1), array(2, 1), array(-1, 2)), decompose_update_into_safe_changes(
  55                  array(1 => 2, 2 => 1), -1));
  56      }
  57  
  58      public function test_decompose_update_into_safe_changes_cycle() {
  59          $this->assertEquals(array(array(1, -2), array(3, 1), array(2, 3), array(-2, 2)),
  60                  decompose_update_into_safe_changes(
  61                  array(1 => 2, 2 => 3 , 3 => 1), -2));
  62      }
  63  
  64      public function test_decompose_update_into_safe_changes_complex() {
  65          $this->assertEquals(array(array(9, 10), array(8, 9),
  66                  array(1, -1), array(5, 1), array(7, 5), array(-1, 7),
  67                  array(4, -1), array(6, 4), array(-1, 6)), decompose_update_into_safe_changes(
  68                  array(1 => 7, 2 => 2, 3 => 3, 4 => 6, 5 => 1, 6 => 4, 7 => 5, 8 => 9, 9 => 10), -1));
  69      }
  70  
  71      public function test_decompose_update_into_safe_changes_unused_value_id_used() {
  72          try {
  73              decompose_update_into_safe_changes(array(1 => 1), 1);
  74              $this->fail('Expected exception was not thrown');
  75          } catch (coding_exception $e) {
  76              $this->assertEquals('Supposedly unused value 1 is actually used!', $e->a);
  77          }
  78      }
  79  
  80      public function test_decompose_update_into_safe_changes_string_values() {
  81          // Sometimes this happens when data has been loaded from the database.
  82          $this->assertEquals(array(array(1, -1), array(2, 1),
  83                      array(3, 2), array(4, 3), array(-1, 4)),
  84                  decompose_update_into_safe_changes(
  85                      array(1 => '4', 2 => '1', 3 => '2', 4 => '3'), -1));
  86      }
  87  
  88      public function test_reorder_rows() {
  89          global $DB;
  90          $dbman = $DB->get_manager();
  91          $this->resetAfterTest();
  92  
  93          $table = new xmldb_table('test_table');
  94          $table->setComment("This is a test'n drop table. You can drop it safely");
  95          $tablename = $table->getName();
  96  
  97          $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
  98          $table->add_field('otherid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
  99          $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
 100          $table->add_field('otherdata', XMLDB_TYPE_TEXT, 'big', null, null, null);
 101          $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
 102          $table->add_key('unique', XMLDB_KEY_UNIQUE, array('otherid', 'sortorder'));
 103          $dbman->create_table($table);
 104  
 105          // Rows intentionally added in a slightly 'random' order.
 106          // Note we are testing hat the otherid = 1 rows don't get messed up,
 107          // as well as testing that the otherid = 2 rows are updated correctly.
 108          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 1, 'otherdata' => 'To become 4'));
 109          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 2, 'otherdata' => 'To become 1'));
 110          $DB->insert_record($tablename, array('otherid' => 1, 'sortorder' => 1, 'otherdata' => 'Other 1'));
 111          $DB->insert_record($tablename, array('otherid' => 1, 'sortorder' => 2, 'otherdata' => 'Other 2'));
 112          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 3, 'otherdata' => 'To stay at 3'));
 113          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 4, 'otherdata' => 'To become 2'));
 114  
 115          update_field_with_unique_index($tablename, 'sortorder',
 116                  array(1 => 4, 2 => 1, 3 => 3, 4 => 2), array('otherid' => 2));
 117  
 118          $this->assertEquals(array(
 119                  3 => (object) array('id' => 3, 'otherid' => 1, 'sortorder' => 1, 'otherdata' => 'Other 1'),
 120                  4 => (object) array('id' => 4, 'otherid' => 1, 'sortorder' => 2, 'otherdata' => 'Other 2'),
 121              ), $DB->get_records($tablename, array('otherid' => 1), 'sortorder'));
 122          $this->assertEquals(array(
 123                  2 => (object) array('id' => 2, 'otherid' => 2, 'sortorder' => 1, 'otherdata' => 'To become 1'),
 124                  6 => (object) array('id' => 6, 'otherid' => 2, 'sortorder' => 2, 'otherdata' => 'To become 2'),
 125                  5 => (object) array('id' => 5, 'otherid' => 2, 'sortorder' => 3, 'otherdata' => 'To stay at 3'),
 126                  1 => (object) array('id' => 1, 'otherid' => 2, 'sortorder' => 4, 'otherdata' => 'To become 4'),
 127              ), $DB->get_records($tablename, array('otherid' => 2), 'sortorder'));
 128      }
 129  }