<?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.
//
// Moodle is distributed in the hope that it will be useful,
// 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.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
>
/**
* Unit tests for the multianswer question definition class.
*
* @package qtype
* @subpackage multianswer
* @copyright 2011 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
global $CFG;
require_once($CFG->dirroot . '/question/engine/tests/helpers.php');
/**
* Unit tests for qtype_multianswer_question.
*
* @copyright 2011 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class qtype_multianswer_question_test extends advanced_testcase {
public function test_get_expected_data() {
$question = test_question_maker::make_question('multianswer');
$this->assertEquals(array('sub1_answer' => PARAM_RAW_TRIMMED,
'sub2_answer' => PARAM_RAW), $question->get_expected_data());
}
public function test_is_complete_response() {
$question = test_question_maker::make_question('multianswer');
$this->assertFalse($question->is_complete_response(array()));
$this->assertTrue($question->is_complete_response(array('sub1_answer' => 'Owl',
'sub2_answer' => '2')));
$this->assertTrue($question->is_complete_response(array('sub1_answer' => '0',
'sub2_answer' => 0)));
$this->assertFalse($question->is_complete_response(array('sub1_answer' => 'Owl')));
}
public function test_is_gradable_response() {
$question = test_question_maker::make_question('multianswer');
$this->assertFalse($question->is_gradable_response(array()));
$this->assertTrue($question->is_gradable_response(array('sub1_answer' => 'Owl',
'sub2_answer' => '2')));
$this->assertTrue($question->is_gradable_response(array('sub1_answer' => '0',
'sub2_answer' => 0)));
$this->assertTrue($question->is_gradable_response(array('sub1_answer' => 'Owl')));
}
public function test_grading() {
$question = test_question_maker::make_question('multianswer');
$question->start_attempt(new question_attempt_step(), 1);
$rightchoice = $question->subquestions[2]->get_correct_response();
$this->assertEquals(array(1, question_state::$gradedright), $question->grade_response(
array('sub1_answer' => 'Owl', 'sub2_answer' => reset($rightchoice))));
$this->assertEquals(array(0.5, question_state::$gradedpartial), $question->grade_response(
array('sub1_answer' => 'Owl')));
$this->assertEquals(array(0.5, question_state::$gradedpartial), $question->grade_response(
array('sub1_answer' => 'Goat', 'sub2_answer' => reset($rightchoice))));
$this->assertEquals(array(0, question_state::$gradedwrong), $question->grade_response(
array('sub1_answer' => 'Dog')));
}
public function test_get_correct_response() {
$question = test_question_maker::make_question('multianswer');
$question->start_attempt(new question_attempt_step(), 1);
$rightchoice = $question->subquestions[2]->get_correct_response();
$this->assertEquals(array('sub1_answer' => 'Owl', 'sub2_answer' => reset($rightchoice)),
$question->get_correct_response());
}
public function test_get_question_summary() {
$question = test_question_maker::make_question('multianswer');
// Bit of a hack to make testing easier.
$question->subquestions[2]->shuffleanswers = false;
$question->start_attempt(new question_attempt_step(), 1);
$qsummary = $question->get_question_summary();
$this->assertEquals('Complete this opening line of verse: "The _____ and the ' .
'{Bow-wow; Wiggly worm; Pussy-cat} went to sea".', $qsummary);
}
public function test_summarise_response() {
$question = test_question_maker::make_question('multianswer');
$question->start_attempt(new question_attempt_step(), 1);
$rightchoice = $question->subquestions[2]->get_correct_response();
$this->assertEquals(get_string('subqresponse', 'qtype_multianswer',
array('i' => 1, 'response' => 'Owl')) . '; ' .
get_string('subqresponse', 'qtype_multianswer',
array('i' => 2, 'response' => 'Pussy-cat')), $question->summarise_response(
array('sub1_answer' => 'Owl', 'sub2_answer' => reset($rightchoice))));
}
public function test_get_num_parts_right() {
$question = test_question_maker::make_question('multianswer');
$question->start_attempt(new question_attempt_step(), 1);
$rightchoice = $question->subquestions[2]->get_correct_response();
$right = reset($rightchoice);
$response = array('sub1_answer' => 'Frog', 'sub2_answer' => $right);
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(1, $numpartsright);
$this->assertEquals(2, $numparts);
$response = array('sub1_answer' => 'Owl', 'sub2_answer' => $right);
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(2, $numpartsright);
$response = array('sub1_answer' => 'Dog', 'sub2_answer' => 3);
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(0, $numpartsright);
$response = array('sub1_answer' => 'Owl');
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(1, $numpartsright);
$response = array('sub1_answer' => 'Dog');
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(0, $numpartsright);
$response = array('sub2_answer' => $right);
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(1, $numpartsright);
}
public function test_get_num_parts_right_fourmc() {
// Create a multianswer question with four mcq.
$question = test_question_maker::make_question('multianswer', 'fourmc');
$question->start_attempt(new question_attempt_step(), 1);
$response = array('sub1_answer' => '1', 'sub2_answer' => '1',
'sub3_answer' => '1', 'sub4_answer' => '1');
list($numpartsright, $numparts) = $question->get_num_parts_right($response);
$this->assertEquals(2, $numpartsright);
}
public function test_clear_wrong_from_response() {
$question = test_question_maker::make_question('multianswer');
$question->start_attempt(new question_attempt_step(), 1);
$rightchoice = $question->subquestions[2]->get_correct_response();
$right = reset($rightchoice);
$response = array('sub1_answer' => 'Frog', 'sub2_answer' => $right);
$this->assertEquals($question->clear_wrong_from_response($response),
array('sub1_answer' => '', 'sub2_answer' => $right));
$response = array('sub1_answer' => 'Owl', 'sub2_answer' => $right);
$this->assertEquals($question->clear_wrong_from_response($response),
array('sub1_answer' => 'Owl', 'sub2_answer' => $right));
$response = array('sub1_answer' => 'Dog', 'sub2_answer' => 3);
$this->assertEquals($question->clear_wrong_from_response($response),
array('sub1_answer' => '', 'sub2_answer' => ''));
$response = array('sub1_answer' => 'Owl');
$this->assertEquals($question->clear_wrong_from_response($response),
array('sub1_answer' => 'Owl'));
$response = array('sub2_answer' => $right);
$this->assertEquals($question->clear_wrong_from_response($response),
array('sub2_answer' => $right));
}
public function test_compute_final_grade() {
$question = test_question_maker::make_question('multianswer');
// Set penalty to 0.2 to ease calculations.
$question->penalty = 0.2;
// Set subquestion 2 defaultmark to 2, to make it a better test,
// even thought (at the moment) that never happens for real.
$question->subquestions[2]->defaultmark = 2;
$question->start_attempt(new question_attempt_step(), 1);
// Compute right and wrong response for subquestion 2.
$rightchoice = $question->subquestions[2]->get_correct_response();
$right = reset($rightchoice);
$wrong = ($right + 1) % 3;
// Get subquestion 1 right at 2nd try and subquestion 2 right at 3rd try.
$responses = array(0 => array('sub1_answer' => 'Dog', 'sub2_answer' => $wrong),
1 => array('sub1_answer' => 'Owl', 'sub2_answer' => $wrong),
2 => array('sub1_answer' => 'Owl', 'sub2_answer' => $right),
);
$finalgrade = $question->compute_final_grade($responses, 1);
< $this->assertEqualsWithDelta(1 / 3 * (1 - 0.2) + 2 / 3 * (1 - 2 * 0.2), $finalgrade, question_testcase::GRADE_DELTA);
> $this->assertEquals(1 / 3 * (1 - 0.2) + 2 / 3 * (1 - 2 * 0.2), $finalgrade);
// Get subquestion 1 right at 3rd try and subquestion 2 right at 2nd try.
$responses = array(0 => array('sub1_answer' => 'Dog', 'sub2_answer' => $wrong),
1 => array('sub1_answer' => 'Cat', 'sub2_answer' => $right),
2 => array('sub1_answer' => 'Owl', 'sub2_answer' => $right),
3 => array('sub1_answer' => 'Owl', 'sub2_answer' => $right),
);
$finalgrade = $question->compute_final_grade($responses, 1);
< $this->assertEqualsWithDelta(1 / 3 * (1 - 2 * 0.2) + 2 / 3 * (1 - 0.2), $finalgrade, question_testcase::GRADE_DELTA);
> $this->assertEquals(1 / 3 * (1 - 2 * 0.2) + 2 / 3 * (1 - 0.2), $finalgrade);
// Get subquestion 1 right at 4th try and subquestion 2 right at 1st try.
$responses = array(0 => array('sub1_answer' => 'Dog', 'sub2_answer' => $right),
1 => array('sub1_answer' => 'Dog', 'sub2_answer' => $right),
2 => array('sub1_answer' => 'Dog', 'sub2_answer' => $right),
3 => array('sub1_answer' => 'Owl', 'sub2_answer' => $right),
);
$finalgrade = $question->compute_final_grade($responses, 1);
< $this->assertEqualsWithDelta(1 / 3 * (1 - 3 * 0.2) + 2 / 3, $finalgrade, question_testcase::GRADE_DELTA);
> $this->assertEquals(1 / 3 * (1 - 3 * 0.2) + 2 / 3, $finalgrade);
// Get subquestion 1 right at 4th try and subquestion 2 right 3rd try.
// Subquestion 2 was right at 1st try, but last change is at 3rd try.
$responses = array(0 => array('sub1_answer' => 'Dog', 'sub2_answer' => $right),
1 => array('sub1_answer' => 'Cat', 'sub2_answer' => $wrong),
2 => array('sub1_answer' => 'Frog', 'sub2_answer' => $right),
3 => array('sub1_answer' => 'Owl', 'sub2_answer' => $right),
);
$finalgrade = $question->compute_final_grade($responses, 1);
< $this->assertEqualsWithDelta(1 / 3 * (1 - 3 * 0.2) + 2 / 3 * (1 - 2 * 0.2), $finalgrade, question_testcase::GRADE_DELTA);
> $this->assertEquals(1 / 3 * (1 - 3 * 0.2) + 2 / 3 * (1 - 2 * 0.2), $finalgrade);
// Incomplete responses. Subquestion 1 is right at 4th try and subquestion 2 at 3rd try.
$responses = array(0 => array('sub1_answer' => 'Dog'),
1 => array('sub1_answer' => 'Cat'),
2 => array('sub1_answer' => 'Frog', 'sub2_answer' => $right),
3 => array('sub1_answer' => 'Owl', 'sub2_answer' => $right),
);
$finalgrade = $question->compute_final_grade($responses, 1);
< $this->assertEqualsWithDelta(1 / 3 * (1 - 3 * 0.2) + 2 / 3 * (1 - 2 * 0.2), $finalgrade, question_testcase::GRADE_DELTA);
> $this->assertEquals(1 / 3 * (1 - 3 * 0.2) + 2 / 3 * (1 - 2 * 0.2), $finalgrade);
> }
>
> /**
> * test_get_question_definition_for_external_rendering
> */
> public function test_get_question_definition_for_external_rendering() {
> $this->resetAfterTest();
>
> $question = test_question_maker::make_question('multianswer');
> $question->start_attempt(new question_attempt_step(), 1);
> $qa = test_question_maker::get_a_qa($question);
> $displayoptions = new question_display_options();
>
> $options = $question->get_question_definition_for_external_rendering($qa, $displayoptions);
> $this->assertNull($options);
}
}