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Long Term Support Release
- Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
- Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
- PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
/question/engine/tests/ -> helpers.php (source)
Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401] [Versions 400 and 401] [Versions 401 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 * This file contains helper classes for testing the question engine. 19 * 20 * @package moodlecore 21 * @subpackage questionengine 22 * @copyright 2009 The Open University 23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 24 */ 25 26 27 defined('MOODLE_INTERNAL') || die(); 28 29 global $CFG; 30 require_once (__DIR__ . '/../lib.php'); 31 require_once($CFG->dirroot . '/lib/phpunit/lib.php'); 32 33 34 /** 35 * Makes some protected methods of question_attempt public to facilitate testing. 36 * 37 * @copyright 2009 The Open University 38 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 39 */ 40 class testable_question_attempt extends question_attempt { 41 public function add_step(question_attempt_step $step) { 42 parent::add_step($step); 43 } 44 public function set_min_fraction($fraction) { 45 $this->minfraction = $fraction; 46 } 47 public function set_max_fraction($fraction) { 48 $this->maxfraction = $fraction; 49 } 50 public function set_behaviour(question_behaviour $behaviour) { 51 $this->behaviour = $behaviour; 52 } 53 } 54 55 56 /** 57 * Test subclass to allow access to some protected data so that the correct 58 * behaviour can be verified. 59 * 60 * @copyright 2012 The Open University 61 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 62 */ 63 class testable_question_engine_unit_of_work extends question_engine_unit_of_work { 64 public function get_modified() { 65 return $this->modified; 66 } 67 68 public function get_attempts_added() { 69 return $this->attemptsadded; 70 } 71 72 public function get_attempts_modified() { 73 return $this->attemptsmodified; 74 } 75 76 public function get_steps_added() { 77 return $this->stepsadded; 78 } 79 80 public function get_steps_modified() { 81 return $this->stepsmodified; 82 } 83 84 public function get_steps_deleted() { 85 return $this->stepsdeleted; 86 } 87 88 public function get_metadata_added() { 89 return $this->metadataadded; 90 } 91 92 public function get_metadata_modified() { 93 return $this->metadatamodified; 94 } 95 } 96 97 98 /** 99 * Base class for question type test helpers. 100 * 101 * @copyright 2011 The Open University 102 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 103 */ 104 abstract class question_test_helper { 105 /** 106 * @return array of example question names that can be passed as the $which 107 * argument of {@link test_question_maker::make_question} when $qtype is 108 * this question type. 109 */ 110 abstract public function get_test_questions(); 111 112 /** 113 * Set up a form to create a question in $cat. This method also sets cat and contextid on $questiondata object. 114 * @param object $cat the category 115 * @param object $questiondata form initialisation requires question data. 116 * @return moodleform 117 */ 118 public static function get_question_editing_form($cat, $questiondata) { 119 $catcontext = context::instance_by_id($cat->contextid, MUST_EXIST); 120 $contexts = new core_question\local\bank\question_edit_contexts($catcontext); 121 $dataforformconstructor = new stdClass(); 122 $dataforformconstructor->createdby = $questiondata->createdby; 123 $dataforformconstructor->qtype = $questiondata->qtype; 124 $dataforformconstructor->contextid = $questiondata->contextid = $catcontext->id; 125 $dataforformconstructor->category = $questiondata->category = $cat->id; 126 $dataforformconstructor->status = $questiondata->status; 127 $dataforformconstructor->formoptions = new stdClass(); 128 $dataforformconstructor->formoptions->canmove = true; 129 $dataforformconstructor->formoptions->cansaveasnew = true; 130 $dataforformconstructor->formoptions->canedit = true; 131 $dataforformconstructor->formoptions->repeatelements = true; 132 $qtype = question_bank::get_qtype($questiondata->qtype); 133 return $qtype->create_editing_form('question.php', $dataforformconstructor, $cat, $contexts, true); 134 } 135 } 136 137 138 /** 139 * This class creates questions of various types, which can then be used when 140 * testing. 141 * 142 * @copyright 2009 The Open University 143 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 144 */ 145 class test_question_maker { 146 const STANDARD_OVERALL_CORRECT_FEEDBACK = 'Well done!'; 147 const STANDARD_OVERALL_PARTIALLYCORRECT_FEEDBACK = 148 'Parts, but only parts, of your response are correct.'; 149 const STANDARD_OVERALL_INCORRECT_FEEDBACK = 'That is not right at all.'; 150 151 /** @var array qtype => qtype test helper class. */ 152 protected static $testhelpers = array(); 153 154 /** 155 * Just make a question_attempt at a question. Useful for unit tests that 156 * need to pass a $qa to methods that call format_text. Probably not safe 157 * to use for anything beyond that. 158 * @param question_definition $question a question. 159 * @param number $maxmark the max mark to set. 160 * @return question_attempt the question attempt. 161 */ 162 public static function get_a_qa($question, $maxmark = 3) { 163 return new question_attempt($question, 13, null, $maxmark); 164 } 165 166 /** 167 * Initialise the common fields of a question of any type. 168 */ 169 public static function initialise_a_question($q) { 170 global $USER; 171 172 $q->id = 0; 173 $q->category = 0; 174 $q->idnumber = null; 175 $q->parent = 0; 176 $q->questiontextformat = FORMAT_HTML; 177 $q->generalfeedbackformat = FORMAT_HTML; 178 $q->defaultmark = 1; 179 $q->penalty = 0.3333333; 180 $q->length = 1; 181 $q->stamp = make_unique_id_code(); 182 $q->status = \core_question\local\bank\question_version_status::QUESTION_STATUS_READY; 183 $q->version = 1; 184 $q->timecreated = time(); 185 $q->timemodified = time(); 186 $q->createdby = $USER->id; 187 $q->modifiedby = $USER->id; 188 } 189 190 public static function initialise_question_data($qdata) { 191 global $USER; 192 193 $qdata->id = 0; 194 $qdata->category = 0; 195 $qdata->idnumber = null; 196 $qdata->contextid = 0; 197 $qdata->parent = 0; 198 $qdata->questiontextformat = FORMAT_HTML; 199 $qdata->generalfeedbackformat = FORMAT_HTML; 200 $qdata->defaultmark = 1; 201 $qdata->penalty = 0.3333333; 202 $qdata->length = 1; 203 $qdata->stamp = make_unique_id_code(); 204 $qdata->status = \core_question\local\bank\question_version_status::QUESTION_STATUS_READY; 205 $qdata->version = 1; 206 $qdata->timecreated = time(); 207 $qdata->timemodified = time(); 208 $qdata->createdby = $USER->id; 209 $qdata->modifiedby = $USER->id; 210 $qdata->hints = array(); 211 } 212 213 /** 214 * Get the test helper class for a particular question type. 215 * @param $qtype the question type name, e.g. 'multichoice'. 216 * @return question_test_helper the test helper class. 217 */ 218 public static function get_test_helper($qtype) { 219 global $CFG; 220 221 if (array_key_exists($qtype, self::$testhelpers)) { 222 return self::$testhelpers[$qtype]; 223 } 224 225 $file = core_component::get_plugin_directory('qtype', $qtype) . '/tests/helper.php'; 226 if (!is_readable($file)) { 227 throw new coding_exception('Question type ' . $qtype . 228 ' does not have test helper code.'); 229 } 230 include_once($file); 231 232 $class = 'qtype_' . $qtype . '_test_helper'; 233 if (!class_exists($class)) { 234 throw new coding_exception('Class ' . $class . ' is not defined in ' . $file); 235 } 236 237 self::$testhelpers[$qtype] = new $class(); 238 return self::$testhelpers[$qtype]; 239 } 240 241 /** 242 * Call a method on a qtype_{$qtype}_test_helper class and return the result. 243 * 244 * @param string $methodtemplate e.g. 'make_{qtype}_question_{which}'; 245 * @param string $qtype the question type to get a test question for. 246 * @param string $which one of the names returned by the get_test_questions 247 * method of the relevant qtype_{$qtype}_test_helper class. 248 * @param unknown_type $which 249 */ 250 protected static function call_question_helper_method($methodtemplate, $qtype, $which = null) { 251 $helper = self::get_test_helper($qtype); 252 253 $available = $helper->get_test_questions(); 254 255 if (is_null($which)) { 256 $which = reset($available); 257 } else if (!in_array($which, $available)) { 258 throw new coding_exception('Example question ' . $which . ' of type ' . 259 $qtype . ' does not exist.'); 260 } 261 262 $method = str_replace(array('{qtype}', '{which}'), 263 array($qtype, $which), $methodtemplate); 264 265 if (!method_exists($helper, $method)) { 266 throw new coding_exception('Method ' . $method . ' does not exist on the ' . 267 $qtype . ' question type test helper class.'); 268 } 269 270 return $helper->$method(); 271 } 272 273 /** 274 * Question types can provide a number of test question defintions. 275 * They do this by creating a qtype_{$qtype}_test_helper class that extends 276 * question_test_helper. The get_test_questions method returns the list of 277 * test questions available for this question type. 278 * 279 * @param string $qtype the question type to get a test question for. 280 * @param string $which one of the names returned by the get_test_questions 281 * method of the relevant qtype_{$qtype}_test_helper class. 282 * @return question_definition the requested question object. 283 */ 284 public static function make_question($qtype, $which = null) { 285 return self::call_question_helper_method('make_{qtype}_question_{which}', 286 $qtype, $which); 287 } 288 289 /** 290 * Like {@link make_question()} but returns the datastructure from 291 * get_question_options instead of the question_definition object. 292 * 293 * @param string $qtype the question type to get a test question for. 294 * @param string $which one of the names returned by the get_test_questions 295 * method of the relevant qtype_{$qtype}_test_helper class. 296 * @return stdClass the requested question object. 297 */ 298 public static function get_question_data($qtype, $which = null) { 299 return self::call_question_helper_method('get_{qtype}_question_data_{which}', 300 $qtype, $which); 301 } 302 303 /** 304 * Like {@link make_question()} but returns the data what would be saved from 305 * the question editing form instead of the question_definition object. 306 * 307 * @param string $qtype the question type to get a test question for. 308 * @param string $which one of the names returned by the get_test_questions 309 * method of the relevant qtype_{$qtype}_test_helper class. 310 * @return stdClass the requested question object. 311 */ 312 public static function get_question_form_data($qtype, $which = null) { 313 return self::call_question_helper_method('get_{qtype}_question_form_data_{which}', 314 $qtype, $which); 315 } 316 317 /** 318 * Makes a multichoice question with choices 'A', 'B' and 'C' shuffled. 'A' 319 * is correct, defaultmark 1. 320 * @return qtype_multichoice_single_question 321 */ 322 public static function make_a_multichoice_single_question() { 323 question_bank::load_question_definition_classes('multichoice'); 324 $mc = new qtype_multichoice_single_question(); 325 self::initialise_a_question($mc); 326 $mc->name = 'Multi-choice question, single response'; 327 $mc->questiontext = 'The answer is A.'; 328 $mc->generalfeedback = 'You should have selected A.'; 329 $mc->qtype = question_bank::get_qtype('multichoice'); 330 331 $mc->shuffleanswers = 1; 332 $mc->answernumbering = 'abc'; 333 $mc->showstandardinstruction = 0; 334 335 $mc->answers = array( 336 13 => new question_answer(13, 'A', 1, 'A is right', FORMAT_HTML), 337 14 => new question_answer(14, 'B', -0.3333333, 'B is wrong', FORMAT_HTML), 338 15 => new question_answer(15, 'C', -0.3333333, 'C is wrong', FORMAT_HTML), 339 ); 340 341 return $mc; 342 } 343 344 /** 345 * Makes a multichoice question with choices 'A', 'B', 'C' and 'D' shuffled. 346 * 'A' and 'C' is correct, defaultmark 1. 347 * @return qtype_multichoice_multi_question 348 */ 349 public static function make_a_multichoice_multi_question() { 350 question_bank::load_question_definition_classes('multichoice'); 351 $mc = new qtype_multichoice_multi_question(); 352 self::initialise_a_question($mc); 353 $mc->name = 'Multi-choice question, multiple response'; 354 $mc->questiontext = 'The answer is A and C.'; 355 $mc->generalfeedback = 'You should have selected A and C.'; 356 $mc->qtype = question_bank::get_qtype('multichoice'); 357 358 $mc->shuffleanswers = 1; 359 $mc->answernumbering = 'abc'; 360 $mc->showstandardinstruction = 0; 361 362 self::set_standard_combined_feedback_fields($mc); 363 364 $mc->answers = array( 365 13 => new question_answer(13, 'A', 0.5, 'A is part of the right answer', FORMAT_HTML), 366 14 => new question_answer(14, 'B', -1, 'B is wrong', FORMAT_HTML), 367 15 => new question_answer(15, 'C', 0.5, 'C is part of the right answer', FORMAT_HTML), 368 16 => new question_answer(16, 'D', -1, 'D is wrong', FORMAT_HTML), 369 ); 370 371 return $mc; 372 } 373 374 /** 375 * Makes a matching question to classify 'Dog', 'Frog', 'Toad' and 'Cat' as 376 * 'Mammal', 'Amphibian' or 'Insect'. 377 * defaultmark 1. Stems are shuffled by default. 378 * @return qtype_match_question 379 */ 380 public static function make_a_matching_question() { 381 return self::make_question('match'); 382 } 383 384 /** 385 * Makes a truefalse question with correct ansewer true, defaultmark 1. 386 * @return qtype_essay_question 387 */ 388 public static function make_an_essay_question() { 389 question_bank::load_question_definition_classes('essay'); 390 $essay = new qtype_essay_question(); 391 self::initialise_a_question($essay); 392 $essay->name = 'Essay question'; 393 $essay->questiontext = 'Write an essay.'; 394 $essay->generalfeedback = 'I hope you wrote an interesting essay.'; 395 $essay->penalty = 0; 396 $essay->qtype = question_bank::get_qtype('essay'); 397 398 $essay->responseformat = 'editor'; 399 $essay->responserequired = 1; 400 $essay->responsefieldlines = 15; 401 $essay->attachments = 0; 402 $essay->attachmentsrequired = 0; 403 $essay->responsetemplate = ''; 404 $essay->responsetemplateformat = FORMAT_MOODLE; 405 $essay->graderinfo = ''; 406 $essay->graderinfoformat = FORMAT_MOODLE; 407 408 return $essay; 409 } 410 411 /** 412 * Add some standard overall feedback to a question. You need to use these 413 * specific feedback strings for the corresponding contains_..._feedback 414 * methods in {@link qbehaviour_walkthrough_test_base} to works. 415 * @param question_definition|stdClass $q the question to add the feedback to. 416 */ 417 public static function set_standard_combined_feedback_fields($q) { 418 $q->correctfeedback = self::STANDARD_OVERALL_CORRECT_FEEDBACK; 419 $q->correctfeedbackformat = FORMAT_HTML; 420 $q->partiallycorrectfeedback = self::STANDARD_OVERALL_PARTIALLYCORRECT_FEEDBACK; 421 $q->partiallycorrectfeedbackformat = FORMAT_HTML; 422 $q->shownumcorrect = true; 423 $q->incorrectfeedback = self::STANDARD_OVERALL_INCORRECT_FEEDBACK; 424 $q->incorrectfeedbackformat = FORMAT_HTML; 425 } 426 427 /** 428 * Add some standard overall feedback to a question's form data. 429 */ 430 public static function set_standard_combined_feedback_form_data($form) { 431 $form->correctfeedback = array('text' => self::STANDARD_OVERALL_CORRECT_FEEDBACK, 432 'format' => FORMAT_HTML); 433 $form->partiallycorrectfeedback = array('text' => self::STANDARD_OVERALL_PARTIALLYCORRECT_FEEDBACK, 434 'format' => FORMAT_HTML); 435 $form->shownumcorrect = true; 436 $form->incorrectfeedback = array('text' => self::STANDARD_OVERALL_INCORRECT_FEEDBACK, 437 'format' => FORMAT_HTML); 438 } 439 } 440 441 442 /** 443 * Helper for tests that need to simulate records loaded from the database. 444 * 445 * @copyright 2009 The Open University 446 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 447 */ 448 abstract class testing_db_record_builder { 449 public static function build_db_records(array $table) { 450 $columns = array_shift($table); 451 $records = array(); 452 foreach ($table as $row) { 453 if (count($row) != count($columns)) { 454 throw new coding_exception("Row contains the wrong number of fields."); 455 } 456 $rec = new stdClass(); 457 foreach ($columns as $i => $name) { 458 $rec->$name = $row[$i]; 459 } 460 $records[] = $rec; 461 } 462 return $records; 463 } 464 } 465 466 467 /** 468 * Helper base class for tests that need to simulate records loaded from the 469 * database. 470 * 471 * @copyright 2009 The Open University 472 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 473 */ 474 abstract class data_loading_method_test_base extends advanced_testcase { 475 public function build_db_records(array $table) { 476 return testing_db_record_builder::build_db_records($table); 477 } 478 } 479 480 481 abstract class question_testcase extends advanced_testcase { 482 483 /** 484 * Tolerance accepted in some unit tests when float operations are involved. 485 */ 486 const GRADE_DELTA = 0.00000005; 487 488 public function assert($expectation, $compare, $notused = '') { 489 490 if (get_class($expectation) === 'question_pattern_expectation') { 491 $this->assertMatchesRegularExpression($expectation->pattern, $compare, 492 'Expected regex ' . $expectation->pattern . ' not found in ' . $compare); 493 return; 494 495 } else if (get_class($expectation) === 'question_no_pattern_expectation') { 496 $this->assertDoesNotMatchRegularExpression($expectation->pattern, $compare, 497 'Unexpected regex ' . $expectation->pattern . ' found in ' . $compare); 498 return; 499 500 } else if (get_class($expectation) === 'question_contains_tag_with_attributes') { 501 $this->assertTag(array('tag'=>$expectation->tag, 'attributes'=>$expectation->expectedvalues), $compare, 502 'Looking for a ' . $expectation->tag . ' with attributes ' . html_writer::attributes($expectation->expectedvalues) . ' in ' . $compare); 503 foreach ($expectation->forbiddenvalues as $k=>$v) { 504 $attr = $expectation->expectedvalues; 505 $attr[$k] = $v; 506 $this->assertNotTag(array('tag'=>$expectation->tag, 'attributes'=>$attr), $compare, 507 $expectation->tag . ' had a ' . $k . ' attribute that should not be there in ' . $compare); 508 } 509 return; 510 511 } else if (get_class($expectation) === 'question_contains_tag_with_attribute') { 512 $attr = array($expectation->attribute=>$expectation->value); 513 $this->assertTag(array('tag'=>$expectation->tag, 'attributes'=>$attr), $compare, 514 'Looking for a ' . $expectation->tag . ' with attribute ' . html_writer::attributes($attr) . ' in ' . $compare); 515 return; 516 517 } else if (get_class($expectation) === 'question_does_not_contain_tag_with_attributes') { 518 $this->assertNotTag(array('tag'=>$expectation->tag, 'attributes'=>$expectation->attributes), $compare, 519 'Unexpected ' . $expectation->tag . ' with attributes ' . html_writer::attributes($expectation->attributes) . ' found in ' . $compare); 520 return; 521 522 } else if (get_class($expectation) === 'question_contains_select_expectation') { 523 $tag = array('tag'=>'select', 'attributes'=>array('name'=>$expectation->name), 524 'children'=>array('count'=>count($expectation->choices))); 525 if ($expectation->enabled === false) { 526 $tag['attributes']['disabled'] = 'disabled'; 527 } else if ($expectation->enabled === true) { 528 // TODO 529 } 530 foreach(array_keys($expectation->choices) as $value) { 531 if ($expectation->selected === $value) { 532 $tag['child'] = array('tag'=>'option', 'attributes'=>array('value'=>$value, 'selected'=>'selected')); 533 } else { 534 $tag['child'] = array('tag'=>'option', 'attributes'=>array('value'=>$value)); 535 } 536 } 537 538 $this->assertTag($tag, $compare, 'expected select not found in ' . $compare); 539 return; 540 541 } else if (get_class($expectation) === 'question_check_specified_fields_expectation') { 542 $expect = (array)$expectation->expect; 543 $compare = (array)$compare; 544 foreach ($expect as $k=>$v) { 545 if (!array_key_exists($k, $compare)) { 546 $this->fail("Property {$k} does not exist"); 547 } 548 if ($v != $compare[$k]) { 549 $this->fail("Property {$k} is different"); 550 } 551 } 552 $this->assertTrue(true); 553 return; 554 555 } else if (get_class($expectation) === 'question_contains_tag_with_contents') { 556 $this->assertTag(array('tag'=>$expectation->tag, 'content'=>$expectation->content), $compare, 557 'Looking for a ' . $expectation->tag . ' with content ' . $expectation->content . ' in ' . $compare); 558 return; 559 } 560 561 throw new coding_exception('Unknown expectiontion:'.get_class($expectation)); 562 } 563 564 /** 565 * Use this function rather than assert when checking the value of options within a select element. 566 * 567 * @param question_contains_select_expectation $expectation The select expectation class 568 * @param string $html The rendered output to check against 569 */ 570 public function assert_select_options($expectation, $html) { 571 if (get_class($expectation) !== 'question_contains_select_expectation') { 572 throw new coding_exception('Unsuitable expectiontion: '.get_class($expectation)); 573 } 574 $dom = new DOMDocument(); 575 $dom->loadHTML($html); 576 $selects = $dom->getElementsByTagName('select'); 577 foreach ($selects as $select) { 578 if ($select->getAttribute('name') == $expectation->name) { 579 $options = $select->getElementsByTagName('option'); 580 foreach ($options as $key => $option) { 581 if ($key == 0) { 582 // Check the value of the first option. This is often 'Choose...' or a nbsp. 583 // Note it is necessary to pass a nbsp character in the test here and not just ' '. 584 // Many tests do not require checking of this option. 585 if (isset($expectation->choices[$option->getAttribute('value')])) { 586 $this->assertEquals($expectation->choices[$option->getAttribute('value')], $option->textContent); 587 } 588 continue; 589 } 590 // Check the value of the options in the select. 591 $this->assertEquals($expectation->choices[$option->getAttribute('value')], $option->textContent); 592 if ($expectation->selected && $option->getAttribute('value') == $expectation->selected) { 593 // Check the right option is selected. 594 $this->assertTrue(!empty($option->getAttribute('selected'))); 595 } 596 } 597 if ($expectation->enabled) { 598 // Check the select element is enabled. 599 $this->assertTrue(!$select->getAttribute('disabled')); 600 } 601 } 602 } 603 return; 604 } 605 } 606 607 608 class question_contains_tag_with_contents { 609 public $tag; 610 public $content; 611 public $message; 612 613 public function __construct($tag, $content, $message = '') { 614 $this->tag = $tag; 615 $this->content = $content; 616 $this->message = $message; 617 } 618 619 } 620 621 class question_check_specified_fields_expectation { 622 public $expect; 623 public $message; 624 625 function __construct($expected, $message = '') { 626 $this->expect = $expected; 627 $this->message = $message; 628 } 629 } 630 631 632 class question_contains_select_expectation { 633 public $name; 634 public $choices; 635 public $selected; 636 public $enabled; 637 public $message; 638 639 public function __construct($name, $choices, $selected = null, $enabled = null, $message = '') { 640 $this->name = $name; 641 $this->choices = $choices; 642 $this->selected = $selected; 643 $this->enabled = $enabled; 644 $this->message = $message; 645 } 646 } 647 648 649 class question_does_not_contain_tag_with_attributes { 650 public $tag; 651 public $attributes; 652 public $message; 653 654 public function __construct($tag, $attributes, $message = '') { 655 $this->tag = $tag; 656 $this->attributes = $attributes; 657 $this->message = $message; 658 } 659 } 660 661 662 class question_contains_tag_with_attribute { 663 public $tag; 664 public $attribute; 665 public $value; 666 public $message; 667 668 public function __construct($tag, $attribute, $value, $message = '') { 669 $this->tag = $tag; 670 $this->attribute = $attribute; 671 $this->value = $value; 672 $this->message = $message; 673 } 674 } 675 676 677 class question_contains_tag_with_attributes { 678 public $tag; 679 public $expectedvalues = array(); 680 public $forbiddenvalues = array(); 681 public $message; 682 683 public function __construct($tag, $expectedvalues, $forbiddenvalues=array(), $message = '') { 684 $this->tag = $tag; 685 $this->expectedvalues = $expectedvalues; 686 $this->forbiddenvalues = $forbiddenvalues; 687 $this->message = $message; 688 } 689 } 690 691 692 class question_pattern_expectation { 693 public $pattern; 694 public $message; 695 696 public function __construct($pattern, $message = '') { 697 $this->pattern = $pattern; 698 $this->message = $message; 699 } 700 } 701 702 703 class question_no_pattern_expectation { 704 public $pattern; 705 public $message; 706 707 public function __construct($pattern, $message = '') { 708 $this->pattern = $pattern; 709 $this->message = $message; 710 } 711 } 712 713 714 /** 715 * Helper base class for question walk-through tests. 716 * 717 * The purpose of tests that use this base class is to simulate the entire 718 * interaction of a student making an attempt at a question. Therefore, 719 * these are not really unit tests. They would more accurately be described 720 * as integration tests. However, whether they are unit tests or not, 721 * it works well to implement them in PHPUnit. 722 * 723 * Historically, tests like this were made because Moodle did not have anything 724 * like Behat for end-to-end testing. Even though we do now have Behat, it makes 725 * sense to keep these walk-through tests. They run massively faster than Behat 726 * tests, which gives you a much faster feedback loop while doing development. 727 * They also make it quite easy to test things like regrading the attempt after 728 * the question has been edited, which would be possible but very fiddly in Behat. 729 * 730 * Ideally, the full set of tests for the question class of a question type would be: 731 * 732 * 1. A lot of unit tests for each qtype_myqtype_question class method 733 * like grade_response, is_complete_response, is_same_response, ... 734 * 735 * 2. Several of these walk-through tests, to test the end-to-end interaction 736 * of a student with a question, for example with different behaviours. 737 * 738 * 3. Just one Behat test, using question preview, to verify that everything 739 * is plugged together correctly and works when used through the UI. 740 * 741 * What one would expect to see in one of these walk-through tests is: 742 * 743 * // 1. Set up a question: $q. 744 * 745 * // 2. A call to $this->start_attempt_at_question($q, ...); with the relevant options. 746 * 747 * // 3. Some number of calls to $this->process_submission passing an array of simulated 748 * // POST data that matches what would be sent back be submitting a form that contains 749 * // the form fields that are output by rendering the question. This is like clicking 750 * // the 'Check' button in a question, or navigating to the next page in a quiz. 751 * 752 * // 4. A call to $this->finish(); which is the equivalent of clicking 753 * // 'Submit all and finish' in the quiz. 754 * 755 * // 5. After each of steps 2-4 above, one would expect to see a certain amount of 756 * // validation of the state of the question and how the question is rendered, 757 * // using methods like $this->check_current_state(), $this->check_current_output, etc. 758 * 759 * The best way to work out how to write tests like this is probably to look at 760 * some examples in other question types or question behaviours. 761 * 762 * In writing these tests, it is worth noting the following points: 763 * 764 * a) The easiest mistake to make is at step 3. You need to ensure that your 765 * simulated post data actually matches what gets sent back when the 766 * question is submitted in the browser. Try checking it against the 767 * HTTP POST requests you see in your browser when the question is submitted. 768 * Some question types have a $q->prepare_simulated_post_data() method that 769 * can help with this. 770 * 771 * b) In the past, tests like these used to contain even more repetitive code, 772 * and so they were re-factored to add the helper methods like 773 * start_attempt_at_question, process_submission, finish. That change had 774 * good effects, like reducing duplicate code. However, there were down-sides. 775 * The extra layers of indirection hide what is going on, which means these 776 * tests are harder to understand until you know what the helpers are doing. 777 * If you want an interesting exercise, take one of the walk-through tests, 778 * and inline all the helpers. This might be a good way to understand more about 779 * the question engine API. However, having made the everything-inlined code 780 * and learned from the process, you should then just throw it away. 781 * 782 * c) The way check_current_output works is weird. When these tests were first written 783 * Moodle used SimpleTest for unit tests and check_current_output os written in a 784 * style that made sense there. When we moved to PHPUnit, a quick and dirty 785 * conversion was done. That was a pragmatic move at the time, and we just have 786 * to live with the result. Sorry. (And: don't copy that style for new things.) 787 * 788 * @copyright 2009 The Open University 789 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 790 */ 791 abstract class qbehaviour_walkthrough_test_base extends question_testcase { 792 /** @var question_display_options */ 793 protected $displayoptions; 794 /** @var question_usage_by_activity */ 795 protected $quba; 796 /** @var integer */ 797 798 protected $slot; 799 /** 800 * @var string after {@link render()} has been called, this contains the 801 * display of the question in its current state. 802 */ 803 protected $currentoutput = ''; 804 805 protected function setUp(): void { 806 parent::setUp(); 807 $this->resetAfterTest(true); 808 809 $this->displayoptions = new question_display_options(); 810 $this->quba = question_engine::make_questions_usage_by_activity('unit_test', 811 context_system::instance()); 812 } 813 814 protected function tearDown(): void { 815 $this->displayoptions = null; 816 $this->quba = null; 817 parent::tearDown(); 818 } 819 820 protected function start_attempt_at_question($question, $preferredbehaviour, 821 $maxmark = null, $variant = 1) { 822 $this->quba->set_preferred_behaviour($preferredbehaviour); 823 $this->slot = $this->quba->add_question($question, $maxmark); 824 $this->quba->start_question($this->slot, $variant); 825 } 826 827 /** 828 * Convert an array of data destined for one question to the equivalent POST data. 829 * @param array $data the data for the quetsion. 830 * @return array the complete post data. 831 */ 832 protected function response_data_to_post($data) { 833 $prefix = $this->quba->get_field_prefix($this->slot); 834 $fulldata = array( 835 'slots' => $this->slot, 836 $prefix . ':sequencecheck' => $this->get_question_attempt()->get_sequence_check_count(), 837 ); 838 foreach ($data as $name => $value) { 839 $fulldata[$prefix . $name] = $value; 840 } 841 return $fulldata; 842 } 843 844 protected function process_submission($data) { 845 // Backwards compatibility. 846 reset($data); 847 if (count($data) == 1 && key($data) === '-finish') { 848 $this->finish(); 849 } 850 851 $this->quba->process_all_actions(time(), $this->response_data_to_post($data)); 852 } 853 854 protected function process_autosave($data) { 855 $this->quba->process_all_autosaves(null, $this->response_data_to_post($data)); 856 } 857 858 protected function finish() { 859 $this->quba->finish_all_questions(); 860 } 861 862 protected function manual_grade($comment, $mark, $commentformat = null) { 863 $this->quba->manual_grade($this->slot, $comment, $mark, $commentformat); 864 } 865 866 protected function save_quba(moodle_database $db = null) { 867 question_engine::save_questions_usage_by_activity($this->quba, $db); 868 } 869 870 protected function load_quba(moodle_database $db = null) { 871 $this->quba = question_engine::load_questions_usage_by_activity($this->quba->get_id(), $db); 872 } 873 874 protected function delete_quba() { 875 question_engine::delete_questions_usage_by_activity($this->quba->get_id()); 876 $this->quba = null; 877 } 878 879 /** 880 * Asserts if the manual comment for the question is equal to the provided arguments. 881 * @param $comment Comment text 882 * @param $commentformat Comment format 883 */ 884 protected function check_comment($comment, $commentformat) { 885 $actualcomment = $this->quba->get_question_attempt($this->slot)->get_manual_comment(); 886 887 $this->assertEquals( 888 [$comment, $commentformat], 889 [$actualcomment[0], $actualcomment[1]] 890 ); 891 } 892 893 protected function check_current_state($state) { 894 $this->assertEquals($state, $this->quba->get_question_state($this->slot), 895 'Questions is in the wrong state.'); 896 } 897 898 protected function check_current_mark($mark) { 899 if (is_null($mark)) { 900 $this->assertNull($this->quba->get_question_mark($this->slot)); 901 } else { 902 if ($mark == 0) { 903 // PHP will think a null mark and a mark of 0 are equal, 904 // so explicity check not null in this case. 905 $this->assertNotNull($this->quba->get_question_mark($this->slot)); 906 } 907 $this->assertEqualsWithDelta($mark, $this->quba->get_question_mark($this->slot), 908 0.000001, 'Expected mark and actual mark differ.'); 909 } 910 } 911 912 /** 913 * Generate the HTML rendering of the question in its current state in 914 * $this->currentoutput so that it can be verified. 915 */ 916 protected function render() { 917 $this->currentoutput = $this->quba->render_question($this->slot, $this->displayoptions); 918 } 919 920 protected function check_output_contains_text_input($name, $value = null, $enabled = true) { 921 $attributes = array( 922 'type' => 'text', 923 'name' => $this->quba->get_field_prefix($this->slot) . $name, 924 ); 925 if (!is_null($value)) { 926 $attributes['value'] = $value; 927 } 928 if (!$enabled) { 929 $attributes['readonly'] = 'readonly'; 930 } 931 $matcher = $this->get_tag_matcher('input', $attributes); 932 $this->assertTag($matcher, $this->currentoutput, 933 'Looking for an input with attributes ' . html_writer::attributes($attributes) . ' in ' . $this->currentoutput); 934 935 if ($enabled) { 936 $matcher['attributes']['readonly'] = 'readonly'; 937 $this->assertNotTag($matcher, $this->currentoutput, 938 'input with attributes ' . html_writer::attributes($attributes) . 939 ' should not be read-only in ' . $this->currentoutput); 940 } 941 } 942 943 protected function check_output_contains_text_input_with_class($name, $class = null) { 944 $attributes = array( 945 'type' => 'text', 946 'name' => $this->quba->get_field_prefix($this->slot) . $name, 947 ); 948 if (!is_null($class)) { 949 $attributes['class'] = 'regexp:/\b' . $class . '\b/'; 950 } 951 952 $matcher = $this->get_tag_matcher('input', $attributes); 953 $this->assertTag($matcher, $this->currentoutput, 954 'Looking for an input with attributes ' . html_writer::attributes($attributes) . ' in ' . $this->currentoutput); 955 } 956 957 protected function check_output_does_not_contain_text_input_with_class($name, $class = null) { 958 $attributes = array( 959 'type' => 'text', 960 'name' => $this->quba->get_field_prefix($this->slot) . $name, 961 ); 962 if (!is_null($class)) { 963 $attributes['class'] = 'regexp:/\b' . $class . '\b/'; 964 } 965 966 $matcher = $this->get_tag_matcher('input', $attributes); 967 $this->assertNotTag($matcher, $this->currentoutput, 968 'Unexpected input with attributes ' . html_writer::attributes($attributes) . ' found in ' . $this->currentoutput); 969 } 970 971 protected function check_output_contains_hidden_input($name, $value) { 972 $attributes = array( 973 'type' => 'hidden', 974 'name' => $this->quba->get_field_prefix($this->slot) . $name, 975 'value' => $value, 976 ); 977 $this->assertTag($this->get_tag_matcher('input', $attributes), $this->currentoutput, 978 'Looking for a hidden input with attributes ' . html_writer::attributes($attributes) . ' in ' . $this->currentoutput); 979 } 980 981 protected function check_output_contains($string) { 982 $this->render(); 983 $this->assertStringContainsString($string, $this->currentoutput, 984 'Expected string ' . $string . ' not found in ' . $this->currentoutput); 985 } 986 987 protected function check_output_does_not_contain($string) { 988 $this->render(); 989 $this->assertStringNotContainsString($string, $this->currentoutput, 990 'String ' . $string . ' unexpectedly found in ' . $this->currentoutput); 991 } 992 993 protected function check_output_contains_lang_string($identifier, $component = '', $a = null) { 994 $this->check_output_contains(get_string($identifier, $component, $a)); 995 } 996 997 protected function get_tag_matcher($tag, $attributes) { 998 return array( 999 'tag' => $tag, 1000 'attributes' => $attributes, 1001 ); 1002 } 1003 1004 /** 1005 * @param $condition one or more Expectations. (users varargs). 1006 */ 1007 protected function check_current_output() { 1008 $html = $this->quba->render_question($this->slot, $this->displayoptions); 1009 foreach (func_get_args() as $condition) { 1010 $this->assert($condition, $html); 1011 } 1012 } 1013 1014 /** 1015 * Use this function rather than check_current_output for select expectations where 1016 * checking the value of the options is required. check_current_output only checks 1017 * that the right number of options are available. 1018 * 1019 * @param question_contains_select_expectation $expectations One or more expectations. 1020 */ 1021 protected function check_output_contains_selectoptions(...$expectations) { 1022 $html = $this->quba->render_question($this->slot, $this->displayoptions); 1023 foreach ($expectations as $expectation) { 1024 $this->assert_select_options($expectation, $html); 1025 } 1026 } 1027 1028 protected function get_question_attempt() { 1029 return $this->quba->get_question_attempt($this->slot); 1030 } 1031 1032 protected function get_step_count() { 1033 return $this->get_question_attempt()->get_num_steps(); 1034 } 1035 1036 protected function check_step_count($expectednumsteps) { 1037 $this->assertEquals($expectednumsteps, $this->get_step_count()); 1038 } 1039 1040 protected function get_step($stepnum) { 1041 return $this->get_question_attempt()->get_step($stepnum); 1042 } 1043 1044 protected function get_contains_question_text_expectation($question) { 1045 return new question_pattern_expectation('/' . preg_quote($question->questiontext, '/') . '/'); 1046 } 1047 1048 protected function get_contains_general_feedback_expectation($question) { 1049 return new question_pattern_expectation('/' . preg_quote($question->generalfeedback, '/') . '/'); 1050 } 1051 1052 protected function get_does_not_contain_correctness_expectation() { 1053 return new question_no_pattern_expectation('/class=\"correctness/'); 1054 } 1055 1056 protected function get_contains_correct_expectation() { 1057 return new question_pattern_expectation('/' . preg_quote(get_string('correct', 'question'), '/') . '/'); 1058 } 1059 1060 protected function get_contains_partcorrect_expectation() { 1061 return new question_pattern_expectation('/' . 1062 preg_quote(get_string('partiallycorrect', 'question'), '/') . '/'); 1063 } 1064 1065 protected function get_contains_incorrect_expectation() { 1066 return new question_pattern_expectation('/' . preg_quote(get_string('incorrect', 'question'), '/') . '/'); 1067 } 1068 1069 protected function get_contains_standard_correct_combined_feedback_expectation() { 1070 return new question_pattern_expectation('/' . 1071 preg_quote(test_question_maker::STANDARD_OVERALL_CORRECT_FEEDBACK, '/') . '/'); 1072 } 1073 1074 protected function get_contains_standard_partiallycorrect_combined_feedback_expectation() { 1075 return new question_pattern_expectation('/' . 1076 preg_quote(test_question_maker::STANDARD_OVERALL_PARTIALLYCORRECT_FEEDBACK, '/') . '/'); 1077 } 1078 1079 protected function get_contains_standard_incorrect_combined_feedback_expectation() { 1080 return new question_pattern_expectation('/' . 1081 preg_quote(test_question_maker::STANDARD_OVERALL_INCORRECT_FEEDBACK, '/') . '/'); 1082 } 1083 1084 protected function get_does_not_contain_feedback_expectation() { 1085 return new question_no_pattern_expectation('/class="feedback"/'); 1086 } 1087 1088 protected function get_does_not_contain_num_parts_correct() { 1089 return new question_no_pattern_expectation('/class="numpartscorrect"/'); 1090 } 1091 1092 protected function get_contains_num_parts_correct($num) { 1093 $a = new stdClass(); 1094 $a->num = $num; 1095 return new question_pattern_expectation('/<div class="numpartscorrect">' . 1096 preg_quote(get_string('yougotnright', 'question', $a), '/') . '/'); 1097 } 1098 1099 protected function get_does_not_contain_specific_feedback_expectation() { 1100 return new question_no_pattern_expectation('/class="specificfeedback"/'); 1101 } 1102 1103 protected function get_contains_validation_error_expectation() { 1104 return new question_contains_tag_with_attribute('div', 'class', 'validationerror'); 1105 } 1106 1107 protected function get_does_not_contain_validation_error_expectation() { 1108 return new question_no_pattern_expectation('/class="validationerror"/'); 1109 } 1110 1111 protected function get_contains_mark_summary($mark) { 1112 $a = new stdClass(); 1113 $a->mark = format_float($mark, $this->displayoptions->markdp); 1114 $a->max = format_float($this->quba->get_question_max_mark($this->slot), 1115 $this->displayoptions->markdp); 1116 return new question_pattern_expectation('/' . 1117 preg_quote(get_string('markoutofmax', 'question', $a), '/') . '/'); 1118 } 1119 1120 protected function get_contains_marked_out_of_summary() { 1121 $max = format_float($this->quba->get_question_max_mark($this->slot), 1122 $this->displayoptions->markdp); 1123 return new question_pattern_expectation('/' . 1124 preg_quote(get_string('markedoutofmax', 'question', $max), '/') . '/'); 1125 } 1126 1127 protected function get_does_not_contain_mark_summary() { 1128 return new question_no_pattern_expectation('/<div class="grade">/'); 1129 } 1130 1131 protected function get_contains_checkbox_expectation($baseattr, $enabled, $checked) { 1132 $expectedattributes = $baseattr; 1133 $forbiddenattributes = array(); 1134 $expectedattributes['type'] = 'checkbox'; 1135 if ($enabled === true) { 1136 $forbiddenattributes['disabled'] = 'disabled'; 1137 } else if ($enabled === false) { 1138 $expectedattributes['disabled'] = 'disabled'; 1139 } 1140 if ($checked === true) { 1141 $expectedattributes['checked'] = 'checked'; 1142 } else if ($checked === false) { 1143 $forbiddenattributes['checked'] = 'checked'; 1144 } 1145 return new question_contains_tag_with_attributes('input', $expectedattributes, $forbiddenattributes); 1146 } 1147 1148 protected function get_contains_mc_checkbox_expectation($index, $enabled = null, 1149 $checked = null) { 1150 return $this->get_contains_checkbox_expectation(array( 1151 'name' => $this->quba->get_field_prefix($this->slot) . $index, 1152 'value' => 1, 1153 ), $enabled, $checked); 1154 } 1155 1156 protected function get_contains_radio_expectation($baseattr, $enabled, $checked) { 1157 $expectedattributes = $baseattr; 1158 $forbiddenattributes = array(); 1159 $expectedattributes['type'] = 'radio'; 1160 if ($enabled === true) { 1161 $forbiddenattributes['disabled'] = 'disabled'; 1162 } else if ($enabled === false) { 1163 $expectedattributes['disabled'] = 'disabled'; 1164 } 1165 if ($checked === true) { 1166 $expectedattributes['checked'] = 'checked'; 1167 } else if ($checked === false) { 1168 $forbiddenattributes['checked'] = 'checked'; 1169 } 1170 return new question_contains_tag_with_attributes('input', $expectedattributes, $forbiddenattributes); 1171 } 1172 1173 protected function get_contains_mc_radio_expectation($index, $enabled = null, $checked = null) { 1174 return $this->get_contains_radio_expectation(array( 1175 'name' => $this->quba->get_field_prefix($this->slot) . 'answer', 1176 'value' => $index, 1177 ), $enabled, $checked); 1178 } 1179 1180 protected function get_contains_hidden_expectation($name, $value = null) { 1181 $expectedattributes = array('type' => 'hidden', 'name' => s($name)); 1182 if (!is_null($value)) { 1183 $expectedattributes['value'] = s($value); 1184 } 1185 return new question_contains_tag_with_attributes('input', $expectedattributes); 1186 } 1187 1188 protected function get_does_not_contain_hidden_expectation($name, $value = null) { 1189 $expectedattributes = array('type' => 'hidden', 'name' => s($name)); 1190 if (!is_null($value)) { 1191 $expectedattributes['value'] = s($value); 1192 } 1193 return new question_does_not_contain_tag_with_attributes('input', $expectedattributes); 1194 } 1195 1196 protected function get_contains_tf_true_radio_expectation($enabled = null, $checked = null) { 1197 return $this->get_contains_radio_expectation(array( 1198 'name' => $this->quba->get_field_prefix($this->slot) . 'answer', 1199 'value' => 1, 1200 ), $enabled, $checked); 1201 } 1202 1203 protected function get_contains_tf_false_radio_expectation($enabled = null, $checked = null) { 1204 return $this->get_contains_radio_expectation(array( 1205 'name' => $this->quba->get_field_prefix($this->slot) . 'answer', 1206 'value' => 0, 1207 ), $enabled, $checked); 1208 } 1209 1210 protected function get_contains_cbm_radio_expectation($certainty, $enabled = null, 1211 $checked = null) { 1212 return $this->get_contains_radio_expectation(array( 1213 'name' => $this->quba->get_field_prefix($this->slot) . '-certainty', 1214 'value' => $certainty, 1215 ), $enabled, $checked); 1216 } 1217 1218 protected function get_contains_button_expectation($name, $value = null, $enabled = null) { 1219 $expectedattributes = array( 1220 'type' => 'submit', 1221 'name' => $name, 1222 ); 1223 $forbiddenattributes = array(); 1224 if (!is_null($value)) { 1225 $expectedattributes['value'] = $value; 1226 } 1227 if ($enabled === true) { 1228 $forbiddenattributes['disabled'] = 'disabled'; 1229 } else if ($enabled === false) { 1230 $expectedattributes['disabled'] = 'disabled'; 1231 } 1232 return new question_contains_tag_with_attributes('button', $expectedattributes, $forbiddenattributes); 1233 } 1234 1235 /** 1236 * Returns an epectation that a string contains the HTML of a button with 1237 * name {question-attempt prefix}-submit, and eiter enabled or not. 1238 * @param bool $enabled if not null, check the enabled/disabled state of the button. True = enabled. 1239 * @return question_contains_tag_with_attributes an expectation for use with check_current_output. 1240 */ 1241 protected function get_contains_submit_button_expectation($enabled = null) { 1242 return $this->get_contains_button_expectation( 1243 $this->quba->get_field_prefix($this->slot) . '-submit', null, $enabled); 1244 } 1245 1246 /** 1247 * Returns an epectation that a string does not contain the HTML of a button with 1248 * name {question-attempt prefix}-submit. 1249 * @return question_contains_tag_with_attributes an expectation for use with check_current_output. 1250 */ 1251 protected function get_does_not_contain_submit_button_expectation() { 1252 return new question_no_pattern_expectation('/name="' . 1253 $this->quba->get_field_prefix($this->slot) . '-submit"/'); 1254 } 1255 1256 protected function get_tries_remaining_expectation($n) { 1257 return new question_pattern_expectation('/' . 1258 preg_quote(get_string('triesremaining', 'qbehaviour_interactive', $n), '/') . '/'); 1259 } 1260 1261 protected function get_invalid_answer_expectation() { 1262 return new question_pattern_expectation('/' . 1263 preg_quote(get_string('invalidanswer', 'question'), '/') . '/'); 1264 } 1265 1266 protected function get_contains_try_again_button_expectation($enabled = null) { 1267 $expectedattributes = array( 1268 'type' => 'submit', 1269 'name' => $this->quba->get_field_prefix($this->slot) . '-tryagain', 1270 ); 1271 $forbiddenattributes = array(); 1272 if ($enabled === true) { 1273 $forbiddenattributes['disabled'] = 'disabled'; 1274 } else if ($enabled === false) { 1275 $expectedattributes['disabled'] = 'disabled'; 1276 } 1277 return new question_contains_tag_with_attributes('input', $expectedattributes, $forbiddenattributes); 1278 } 1279 1280 protected function get_does_not_contain_try_again_button_expectation() { 1281 return new question_no_pattern_expectation('/name="' . 1282 $this->quba->get_field_prefix($this->slot) . '-tryagain"/'); 1283 } 1284 1285 protected function get_contains_select_expectation($name, $choices, 1286 $selected = null, $enabled = null) { 1287 $fullname = $this->quba->get_field_prefix($this->slot) . $name; 1288 return new question_contains_select_expectation($fullname, $choices, $selected, $enabled); 1289 } 1290 1291 protected function get_mc_right_answer_index($mc) { 1292 $order = $mc->get_order($this->get_question_attempt()); 1293 foreach ($order as $i => $ansid) { 1294 if ($mc->answers[$ansid]->fraction == 1) { 1295 return $i; 1296 } 1297 } 1298 $this->fail('This multiple choice question does not seem to have a right answer!'); 1299 } 1300 1301 protected function get_no_hint_visible_expectation() { 1302 return new question_no_pattern_expectation('/class="hint"/'); 1303 } 1304 1305 protected function get_contains_hint_expectation($hinttext) { 1306 // Does not currently verify hint text. 1307 return new question_contains_tag_with_attribute('div', 'class', 'hint'); 1308 } 1309 1310 /** 1311 * Returns an expectation that a string contains a corrupted question notification. 1312 * 1313 * @return question_pattern_expectation an expectation for use with check_current_output. 1314 */ 1315 protected function get_contains_corruption_notification() { 1316 return new question_pattern_expectation('/' . preg_quote(get_string('corruptedquestion', 'qtype_multianswer'), '/') . '/'); 1317 } 1318 1319 /** 1320 * Returns an expectation that a string contains a corrupted subquestion message. 1321 * 1322 * @return question_pattern_expectation an expectation for use with check_current_output. 1323 */ 1324 protected function get_contains_corrupted_subquestion_message() { 1325 return new question_pattern_expectation('/' . preg_quote(get_string('missingsubquestion', 'qtype_multianswer'), '/') . '/'); 1326 } 1327 } 1328 1329 /** 1330 * Simple class that implements the {@link moodle_recordset} API based on an 1331 * array of test data. 1332 * 1333 * See the {@link question_attempt_step_db_test} class in 1334 * question/engine/tests/testquestionattemptstep.php for an example of how 1335 * this is used. 1336 * 1337 * @copyright 2011 The Open University 1338 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 1339 */ 1340 class question_test_recordset extends moodle_recordset { 1341 protected $records; 1342 1343 /** 1344 * Constructor 1345 * @param $table as for {@link testing_db_record_builder::build_db_records()} 1346 * but does not need a unique first column. 1347 */ 1348 public function __construct(array $table) { 1349 $columns = array_shift($table); 1350 $this->records = array(); 1351 foreach ($table as $row) { 1352 if (count($row) != count($columns)) { 1353 throw new coding_exception("Row contains the wrong number of fields."); 1354 } 1355 $rec = array(); 1356 foreach ($columns as $i => $name) { 1357 $rec[$name] = $row[$i]; 1358 } 1359 $this->records[] = $rec; 1360 } 1361 reset($this->records); 1362 } 1363 1364 public function __destruct() { 1365 $this->close(); 1366 } 1367 1368 #[\ReturnTypeWillChange] 1369 public function current() { 1370 return (object) current($this->records); 1371 } 1372 1373 #[\ReturnTypeWillChange] 1374 public function key() { 1375 if (is_null(key($this->records))) { 1376 return false; 1377 } 1378 $current = current($this->records); 1379 return reset($current); 1380 } 1381 1382 public function next(): void { 1383 next($this->records); 1384 } 1385 1386 public function valid(): bool { 1387 return !is_null(key($this->records)); 1388 } 1389 1390 public function close() { 1391 $this->records = null; 1392 } 1393 }
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