Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

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// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

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// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

namespace core;

/**

 * Tests for {@link decompose_update_into_safe_changes()} and

 * {@link update_field_with_unique_index()}.

 *

 * @package   core

 * @copyright 2014 The Open University

 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class datalib_update_with_unique_index_test extends \advanced_testcase {

    public function test_decompose_update_into_safe_changes_identity() {

        $this->assertEquals(array(), decompose_update_into_safe_changes(

                array(1 => 1, 2 => 2), -1));

    }

    public function test_decompose_update_into_safe_changes_no_overlap() {

        $this->assertEquals(array(array(1, 3), array(2, 4)), decompose_update_into_safe_changes(

                array(1 => 3, 2 => 4), -1));

    }

    public function test_decompose_update_into_safe_changes_shift() {

        $this->assertSame(array(array(3, 4), array(2, 3), array(1, 2)), decompose_update_into_safe_changes(

                array(1 => 2, 2 => 3, 3 => 4), -1));

    }

    public function test_decompose_decompose_update_into_safe_changes_simple_swap() {

        $this->assertEquals(array(array(1, -1), array(2, 1), array(-1, 2)), decompose_update_into_safe_changes(

                array(1 => 2, 2 => 1), -1));

    }

    public function test_decompose_update_into_safe_changes_cycle() {

        $this->assertEquals(array(array(1, -2), array(3, 1), array(2, 3), array(-2, 2)),

                decompose_update_into_safe_changes(

                array(1 => 2, 2 => 3 , 3 => 1), -2));

    }

    public function test_decompose_update_into_safe_changes_complex() {

        $this->assertEquals(array(array(9, 10), array(8, 9),

                array(1, -1), array(5, 1), array(7, 5), array(-1, 7),

                array(4, -1), array(6, 4), array(-1, 6)), decompose_update_into_safe_changes(

                array(1 => 7, 2 => 2, 3 => 3, 4 => 6, 5 => 1, 6 => 4, 7 => 5, 8 => 9, 9 => 10), -1));

    }

    public function test_decompose_update_into_safe_changes_unused_value_id_used() {

        try {

            decompose_update_into_safe_changes(array(1 => 1), 1);

            $this->fail('Expected exception was not thrown');

        } catch (\coding_exception $e) {

            $this->assertEquals('Supposedly unused value 1 is actually used!', $e->a);

        }

    }

    public function test_decompose_update_into_safe_changes_string_values() {

        // Sometimes this happens when data has been loaded from the database.

        $this->assertEquals(array(array(1, -1), array(2, 1),

                    array(3, 2), array(4, 3), array(-1, 4)),

                decompose_update_into_safe_changes(

                    array(1 => '4', 2 => '1', 3 => '2', 4 => '3'), -1));

    }

    public function test_reorder_rows() {

        global $DB;

        $dbman = $DB->get_manager();

        $this->resetAfterTest();

        $table = new \xmldb_table('test_table');

        $table->setComment("This is a test'n drop table. You can drop it safely");

        $tablename = $table->getName();

        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);

        $table->add_field('otherid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');

        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');

        $table->add_field('otherdata', XMLDB_TYPE_TEXT, 'big', null, null, null);

        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));

        $table->add_key('unique', XMLDB_KEY_UNIQUE, array('otherid', 'sortorder'));

        $dbman->create_table($table);

        // Rows intentionally added in a slightly 'random' order.

        // Note we are testing hat the otherid = 1 rows don't get messed up,

        // as well as testing that the otherid = 2 rows are updated correctly.

        $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 1, 'otherdata' => 'To become 4'));

        $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 2, 'otherdata' => 'To become 1'));

        $DB->insert_record($tablename, array('otherid' => 1, 'sortorder' => 1, 'otherdata' => 'Other 1'));

        $DB->insert_record($tablename, array('otherid' => 1, 'sortorder' => 2, 'otherdata' => 'Other 2'));

        $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 3, 'otherdata' => 'To stay at 3'));

        $DB->insert_record($tablename, array('otherid' => 2, 'sortorder' => 4, 'otherdata' => 'To become 2'));

        update_field_with_unique_index($tablename, 'sortorder',

                array(1 => 4, 2 => 1, 3 => 3, 4 => 2), array('otherid' => 2));

        $this->assertEquals(array(

                3 => (object) array('id' => 3, 'otherid' => 1, 'sortorder' => 1, 'otherdata' => 'Other 1'),

                4 => (object) array('id' => 4, 'otherid' => 1, 'sortorder' => 2, 'otherdata' => 'Other 2'),

            ), $DB->get_records($tablename, array('otherid' => 1), 'sortorder'));

        $this->assertEquals(array(

                2 => (object) array('id' => 2, 'otherid' => 2, 'sortorder' => 1, 'otherdata' => 'To become 1'),

                6 => (object) array('id' => 6, 'otherid' => 2, 'sortorder' => 2, 'otherdata' => 'To become 2'),

                5 => (object) array('id' => 5, 'otherid' => 2, 'sortorder' => 3, 'otherdata' => 'To stay at 3'),

                1 => (object) array('id' => 1, 'otherid' => 2, 'sortorder' => 4, 'otherdata' => 'To become 4'),

            ), $DB->get_records($tablename, array('otherid' => 2), 'sortorder'));

    }

}