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WIP template for unit testing
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David Mudrak
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mod/workshop/grading/noerrors/simpletest/teststrategy.php
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mod/workshop/grading/noerrors/simpletest/teststrategy.php
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Unit tests for (some of) mod/workshop/grading/noerrors/strategy.php
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*
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* @package mod-workshop
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* @copyright 2009 David Mudrak <david.mudrak@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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// Include the code to test
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require_once($CFG->dirroot . '/mod/workshop/grading/noerrors/strategy.php');
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global $DB;
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Mock::generate(get_class($DB), 'mockDB');
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/**
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* Test subclass that makes all the protected methods we want to test public
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*/
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class testable_workshop_noerrors_strategy extends workshop_noerrors_strategy {
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/** allows to set dimensions manually */
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public $dimensions = array();
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/**
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* This is where the calculation of suggested grade for submission is done
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*/
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public function calculate_peer_grade(array $grades) {
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return parent::calculate_peer_grade($grades);
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}
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}
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class workshop_noerrors_strategy_test extends UnitTestCase {
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/** real database */
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protected $realDB;
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/** workshop instance emulation */
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protected $workshop;
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/** instance of the strategy logic class being tested */
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protected $strategy;
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/**
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* Setup testing environment
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*/
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public function setUp() {
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global $DB;
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$this->realDB = $DB;
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$DB = new mockDB();
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$cm = (object)array('id' => 3);
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$course = (object)array('id' => 11);
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$workshop = (object)array('id' => 42, 'strategy' => 'noerrors');
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$this->workshop = new workshop($workshop, $cm, $course);
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$this->strategy = new testable_workshop_noerrors_strategy($this->workshop);
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}
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public function tearDown() {
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global $DB;
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$DB = $this->realDB;
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$this->workshop = null;
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$this->strategy = null;
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}
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public function test_calculate_peer_grade_null_grade() {
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// fixture set-up
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$this->dimensions = array();
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$grades = array();
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertNull($suggested);
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}
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public function test_calculate_peer_grade_one_numerical() {
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// fixture set-up
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$this->strategy->dimensions[1003] = (object)array('grade' => 20, 'weight' => 1);
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$grades[] = (object)array('dimensionid' => 1003, 'grade' => 5);
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual(5/20, $suggested);
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}
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public function test_calculate_peer_grade_negative_weight() {
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// fixture set-up
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$this->strategy->dimensions[1003] = (object)array('grade' => 20, 'weight' => -1);
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$grades[] = (object)array('dimensionid' => 1003, 'grade' => 20);
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$this->expectException('coding_exception');
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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}
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public function test_calculate_peer_grade_one_numerical_weighted() {
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// fixture set-up
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$this->strategy->dimensions[1003] = (object)array('grade' => 20, 'weight' => 3);
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$grades[] = (object)array('dimensionid' => 1003, 'grade' => 5);
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual(5/20, $suggested);
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}
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public function test_calculate_peer_grade_three_numericals_same_weight() {
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// fixture set-up
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$this->strategy->dimensions[1003] = (object)array('grade' =>20, 'weight' => 2);
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$this->strategy->dimensions[1004] = (object)array('grade' =>100, 'weight' => 2);
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$this->strategy->dimensions[1005] = (object)array('grade' =>10, 'weight' => 2);
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$grades[] = (object)array('dimensionid' => 1003, 'grade' => 11);
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$grades[] = (object)array('dimensionid' => 1004, 'grade' => 87);
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$grades[] = (object)array('dimensionid' => 1005, 'grade' => 10);
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual((11/20 + 87/100 + 10/10)/3, $suggested);
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}
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public function test_calculate_peer_grade_three_numericals_different_weights() {
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// fixture set-up
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$this->strategy->dimensions[1003] = (object)array('grade' =>15, 'weight' => 3);
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$this->strategy->dimensions[1004] = (object)array('grade' =>80, 'weight' => 1);
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$this->strategy->dimensions[1005] = (object)array('grade' =>5, 'weight' => 2);
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$grades[] = (object)array('dimensionid' => 1003, 'grade' => 7);
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$grades[] = (object)array('dimensionid' => 1004, 'grade' => 66);
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$grades[] = (object)array('dimensionid' => 1005, 'grade' => 4);
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual((7/15*3 + 66/80*1 + 4/5*2)/6, $suggested);
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}
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public function test_calculate_peer_grade_one_scale_max() {
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global $DB;
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// fixture set-up
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$mockscale = 'E,D,C,B,A';
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$this->strategy->dimensions[1008] = (object)array('grade' => -10, 'weight' => 1);
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$grades[] = (object)array('dimensionid' => 1008, 'grade' => 5);
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$DB->expectOnce('get_field', array("scales", "scale", array("id" => 10), MUST_EXIST));
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$DB->setReturnValue('get_field', $mockscale);
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual(1, $suggested);
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}
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public function test_calculate_peer_grade_one_scale_min_with_scale_caching() {
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global $DB;
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// fixture set-up
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$this->strategy->dimensions[1008] = (object)array('grade' => -10, 'weight' => 1);
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$grades[] = (object)array('dimensionid' => 1008, 'grade' => 1);
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$DB->expectNever('get_field', array("scales", "scale", array("id" => 10), MUST_EXIST)); // cached
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual(0, $suggested);
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}
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public function test_calculate_peer_grade_two_scales_weighted() {
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global $DB;
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// fixture set-up
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$mockscale13 = 'Poor,Good,Excellent';
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$mockscale17 = '-,*,**,***,****,*****,******';
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$this->strategy->dimensions[1012] = (object)array('grade' => -13, 'weight' => 2);
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$this->strategy->dimensions[1019] = (object)array('grade' => -17, 'weight' => 3);
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$grades[] = (object)array('dimensionid' => 1012, 'grade' => 2); // "Good"
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$grades[] = (object)array('dimensionid' => 1019, 'grade' => 5); // "****"
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$DB->expectAt(0, 'get_field', array("scales", "scale", array("id" => 13), MUST_EXIST));
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$DB->setReturnValueAt(0, 'get_field', $mockscale13);
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$DB->expectAt(1, 'get_field', array("scales", "scale", array("id" => 17), MUST_EXIST));
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$DB->setReturnValueAt(1, 'get_field', $mockscale17);
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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// validate
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$this->assertEqual((1/2*2 + 4/6*3)/5, $suggested);
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}
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public function test_calculate_peer_grade_scale_exception() {
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global $DB;
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// fixture set-up
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$mockscale13 = 'Poor,Good,Excellent';
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$this->strategy->dimensions[1012] = (object)array('grade' => -13, 'weight' => 1);
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$DB->expectNever('get_field', array("scales", "scale", array("id" => 13), MUST_EXIST)); // cached
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$grades[] = (object)array('dimensionid' => 1012, 'grade' => 4); // exceeds the number of scale items
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$this->expectException('coding_exception');
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// excercise SUT
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$suggested = $this->strategy->calculate_peer_grade($grades);
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}
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}
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