public function testCartesianResponsesWithSameValue()
 {
     $res = ArrayUtil::cartesianProduct([[['a' => 1], ['b' => 2]], [['a' => 3], ['c' => 4]]]);
     $this->assertTrue(count($res) === 4);
     $this->assertEquals($res[0], [['a' => 1], ['a' => 3]]);
     $this->assertEquals($res[1], [['a' => 1], ['c' => 4]]);
     $this->assertEquals($res[2], [['b' => 2], ['a' => 3]]);
     $this->assertEquals($res[3], [['b' => 2], ['c' => 4]]);
 }
 public function testMergedTextInteraction()
 {
     $file = $this->getFixtureFileContents('interactions/textentryinteraction.xml');
     list($item, $questions) = $this->mapper->parse($file);
     /** @var \LearnosityQti\Entities\Item\item $item */
     $this->assertInstanceOf('LearnosityQti\\Entities\\Item\\item', $item);
     $this->assertTrue($item->get_reference() === 'res_AA-FIB_B13_CH1_geoc_f1f1');
     $this->assertTrue($item->get_status() === 'published');
     $this->assertTrue(count($item->get_questionReferences()) === 1);
     $this->assertTrue(substr_count($item->get_content(), '<span class="learnosity-response question-' . $item->get_questionReferences()[0] . '"></span>') === 1);
     $this->assertTrue(count($questions) === 1);
     $q = $questions[0];
     $this->assertInstanceOf('\\LearnosityQti\\Entities\\Question', $q);
     /* @var $q \LearnosityQti\Entities\Question */
     $this->assertTrue($q->get_type() === 'clozetext');
     /* @var $questionType \LearnosityQti\Entities\QuestionTypes\clozetext */
     $questionType = $q->get_data();
     $this->assertInstanceOf('\\LearnosityQti\\Entities\\QuestionTypes\\clozetext', $questionType);
     $this->assertEmpty($questionType->get_stimulus());
     $this->assertTrue($questionType->get_type() === 'clozetext');
     $this->assertTrue(substr_count($questionType->get_template(), '{{response}}') === 2);
     /* @var $validation \LearnosityQti\Entities\QuestionTypes\clozetext_validation */
     $validation = $questionType->get_validation();
     $this->assertInstanceOf('\\LearnosityQti\\Entities\\QuestionTypes\\clozetext_validation', $validation);
     $this->assertEquals($validation->get_scoring_type(), 'exactMatch');
     /* @var $validResponse \LearnosityQti\Entities\QuestionTypes\clozetext_validation_valid_response */
     $validResponse = $validation->get_valid_response();
     $this->assertInstanceOf('\\LearnosityQti\\Entities\\QuestionTypes\\clozetext_validation_valid_response', $validResponse);
     $this->assertEquals(6, $validResponse->get_score());
     $options = [];
     $options[] = $validResponse->get_value();
     $altResponses = $validation->get_alt_responses();
     $this->assertTrue(count($altResponses) === 3);
     /* @var $altResponse \LearnosityQti\Entities\QuestionTypes\clozetext_validation_alt_responses_item */
     foreach ($altResponses as $altResponse) {
         $this->assertInstanceOf('\\LearnosityQti\\Entities\\QuestionTypes\\clozetext_validation_alt_responses_item', $altResponse);
         $options[] = $altResponse->get_value();
     }
     $this->assertEquals(5, $altResponses[0]->get_score());
     $this->assertEquals(5, $altResponses[1]->get_score());
     $this->assertEquals(4, $altResponses[2]->get_score());
     $expectedOptions = ArrayUtil::cartesianProduct([['a', 'b'], ['OHMYGOD', 'x7']]);
     $matchCount = 0;
     foreach ($expectedOptions as $expectedKey => $expectedValue) {
         foreach ($options as $optionKey => $optionValue) {
             $diff = array_diff($expectedValue, $optionValue);
             if (!$diff) {
                 $matchCount++;
             }
         }
     }
     $this->assertEquals($matchCount, count($options));
 }
 protected function getMatchCorrectTemplateValidation()
 {
     $gapIdentifiersIndexMap = array_flip($this->gapIdentifiers);
     $responses = [];
     $responseIndexSet = [];
     foreach ($this->responseDeclaration->getCorrectResponse()->getValues() as $value) {
         /** @var QtiDirectedPair $valuePair */
         $valuePair = $value->getValue();
         // Map response value and index based from `QtiDirectedPair` Value, try to guess which one is which since they
         // apparently can swap :(
         if (isset($this->possibleResponses[$valuePair->getFirst()]) && isset($gapIdentifiersIndexMap[$valuePair->getSecond()])) {
             $responseValue = $this->possibleResponses[$valuePair->getFirst()];
             $responseIndex = $gapIdentifiersIndexMap[$valuePair->getSecond()];
         } else {
             if (isset($this->possibleResponses[$valuePair->getSecond()]) && isset($gapIdentifiersIndexMap[$valuePair->getFirst()])) {
                 $responseValue = $this->possibleResponses[$valuePair->getSecond()];
                 $responseIndex = $gapIdentifiersIndexMap[$valuePair->getFirst()];
             } else {
                 throw new MappingException('Fail to match identifiers on Value from `correctResponse`');
             }
         }
         // Check for duplicated response
         if (!$this->isDuplicatedResponse) {
             if (!isset($responseIndexSet[$responseValue])) {
                 $responseIndexSet[$responseValue] = true;
             } else {
                 $this->isDuplicatedResponse = true;
             }
         }
         // Build ValidResponse object array in the correct order matching the `gap` elements
         $responses[$responseIndex][] = new ValidResponse(1, [$responseValue]);
     }
     $this->assertEachGapHasCorrespondingValidResponses($responses);
     $responses = ArrayUtil::cartesianProduct($responses);
     $responses = array_map(function ($combination) {
         $value = [];
         /** @var ValidResponse $response */
         foreach ($combination as $response) {
             $value = array_merge($value, $response->getValue());
         }
         return new ValidResponse(1, $value);
     }, $responses);
     return ValidationBuilder\ValidationBuilder::build($this->questionTypeName, 'exactMatch', $responses);
 }