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Differences Between: [Versions 310 and 311] [Versions 39 and 311]

   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  namespace core;
  18  
  19  /**
  20   * Tests for {@link decompose_update_into_safe_changes()} and
  21   * {@link update_field_with_unique_index()}.
  22   *
  23   * @package   core
  24   * @copyright 2014 The Open University
  25   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26   */
  27  class datalib_update_with_unique_index_test extends \advanced_testcase {
  28  
  29      public function test_decompose_update_into_safe_changes_identity() {
  30          $this->assertEquals(array(), decompose_update_into_safe_changes(
  31                  array(1 => 1, 2 => 2), -1));
  32      }
  33  
  34      public function test_decompose_update_into_safe_changes_no_overlap() {
  35          $this->assertEquals(array(array(1, 3), array(2, 4)), decompose_update_into_safe_changes(
  36                  array(1 => 3, 2 => 4), -1));
  37      }
  38  
  39      public function test_decompose_update_into_safe_changes_shift() {
  40          $this->assertSame(array(array(3, 4), array(2, 3), array(1, 2)), decompose_update_into_safe_changes(
  41                  array(1 => 2, 2 => 3, 3 => 4), -1));
  42      }
  43  
  44      public function test_decompose_decompose_update_into_safe_changes_simple_swap() {
  45          $this->assertEquals(array(array(1, -1), array(2, 1), array(-1, 2)), decompose_update_into_safe_changes(
  46                  array(1 => 2, 2 => 1), -1));
  47      }
  48  
  49      public function test_decompose_update_into_safe_changes_cycle() {
  50          $this->assertEquals(array(array(1, -2), array(3, 1), array(2, 3), array(-2, 2)),
  51                  decompose_update_into_safe_changes(
  52                  array(1 => 2, 2 => 3 , 3 => 1), -2));
  53      }
  54  
  55      public function test_decompose_update_into_safe_changes_complex() {
  56          $this->assertEquals(array(array(9, 10), array(8, 9),
  57                  array(1, -1), array(5, 1), array(7, 5), array(-1, 7),
  58                  array(4, -1), array(6, 4), array(-1, 6)), decompose_update_into_safe_changes(
  59                  array(1 => 7, 2 => 2, 3 => 3, 4 => 6, 5 => 1, 6 => 4, 7 => 5, 8 => 9, 9 => 10), -1));
  60      }
  61  
  62      public function test_decompose_update_into_safe_changes_unused_value_id_used() {
  63          try {
  64              decompose_update_into_safe_changes(array(1 => 1), 1);
  65              $this->fail('Expected exception was not thrown');
  66          } catch (\coding_exception $e) {
  67              $this->assertEquals('Supposedly unused value 1 is actually used!', $e->a);
  68          }
  69      }
  70  
  71      public function test_decompose_update_into_safe_changes_string_values() {
  72          // Sometimes this happens when data has been loaded from the database.
  73          $this->assertEquals(array(array(1, -1), array(2, 1),
  74                      array(3, 2), array(4, 3), array(-1, 4)),
  75                  decompose_update_into_safe_changes(
  76                      array(1 => '4', 2 => '1', 3 => '2', 4 => '3'), -1));
  77      }
  78  
  79      public function test_reorder_rows() {
  80          global $DB;
  81          $dbman = $DB->get_manager();
  82          $this->resetAfterTest();
  83  
  84          $table = new \xmldb_table('test_table');
  85          $table->setComment("This is a test'n drop table. You can drop it safely");
  86          $tablename = $table->getName();
  87  
  88          $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
  89          $table->add_field('otherid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
  90          $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
  91          $table->add_field('otherdata', XMLDB_TYPE_TEXT, 'big', null, null, null);
  92          $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
  93          $table->add_key('unique', XMLDB_KEY_UNIQUE, array('otherid', 'sortorder'));
  94          $dbman->create_table($table);
  95  
  96          // Rows intentionally added in a slightly 'random' order.
  97          // Note we are testing hat the otherid = 1 rows don't get messed up,
  98          // as well as testing that the otherid = 2 rows are updated correctly.
  99          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 1, 'otherdata' => 'To become 4'));
 100          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 2, 'otherdata' => 'To become 1'));
 101          $DB->insert_record($tablename, array('otherid' => 1, 'sortorder' => 1, 'otherdata' => 'Other 1'));
 102          $DB->insert_record($tablename, array('otherid' => 1, 'sortorder' => 2, 'otherdata' => 'Other 2'));
 103          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 3, 'otherdata' => 'To stay at 3'));
 104          $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 4, 'otherdata' => 'To become 2'));
 105  
 106          update_field_with_unique_index($tablename, 'sortorder',
 107                  array(1 => 4, 2 => 1, 3 => 3, 4 => 2), array('otherid' => 2));
 108  
 109          $this->assertEquals(array(
 110                  3 => (object) array('id' => 3, 'otherid' => 1, 'sortorder' => 1, 'otherdata' => 'Other 1'),
 111                  4 => (object) array('id' => 4, 'otherid' => 1, 'sortorder' => 2, 'otherdata' => 'Other 2'),
 112              ), $DB->get_records($tablename, array('otherid' => 1), 'sortorder'));
 113          $this->assertEquals(array(
 114                  2 => (object) array('id' => 2, 'otherid' => 2, 'sortorder' => 1, 'otherdata' => 'To become 1'),
 115                  6 => (object) array('id' => 6, 'otherid' => 2, 'sortorder' => 2, 'otherdata' => 'To become 2'),
 116                  5 => (object) array('id' => 5, 'otherid' => 2, 'sortorder' => 3, 'otherdata' => 'To stay at 3'),
 117                  1 => (object) array('id' => 1, 'otherid' => 2, 'sortorder' => 4, 'otherdata' => 'To become 4'),
 118              ), $DB->get_records($tablename, array('otherid' => 2), 'sortorder'));
 119      }
 120  }