Add unit tests for QuizSpreadsheetService

7 tests covering generateTemplate(), quizToXlsx(), and xlsxToQuiz():
- valid XLSX output and MIME type
- template without example reimports as empty
- template example data survives a reimport
- round-trip (export → reimport) preserves questions, answers, and correct flags
- empty quiz exports and reimports cleanly
- invalid MIME type throws InvalidArgumentException
- question with no answers throws SpreadsheetDataException with error list

src/Entity/GivenAnswer.php

@@ -31,14 +31,14 @@ class GivenAnswer
     public function __construct(
         #[ORM\JoinColumn(nullable: false)]
         #[ORM\ManyToOne(inversedBy: 'givenAnswers')]
-        private(set) Candidate $candidate,
+        public private(set) Candidate $candidate,
 
         #[ORM\JoinColumn(nullable: false, onDelete: 'CASCADE')]
         #[ORM\ManyToOne]
-        private(set) Quiz $quiz,
+        public private(set) Quiz $quiz,
 
         #[ORM\JoinColumn(nullable: false)]
         #[ORM\ManyToOne(inversedBy: 'givenAnswers')]
-        private(set) Answer $answer,
+        public private(set) Answer $answer,
     ) {}
 }

tests/Service/QuizSpreadsheetServiceTest.php

@@ -0,0 +1,182 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tvdt\Tests\Service;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\File\File;
+use Tvdt\Entity\Answer;
+use Tvdt\Entity\Question;
+use Tvdt\Entity\Quiz;
+use Tvdt\Exception\SpreadsheetDataException;
+use Tvdt\Service\QuizSpreadsheetService;
+
+use function Safe\file_put_contents;
+use function Safe\ob_get_clean;
+use function Safe\ob_start;
+use function Safe\unlink;
+
+#[CoversClass(QuizSpreadsheetService::class)]
+final class QuizSpreadsheetServiceTest extends TestCase
+{
+    private QuizSpreadsheetService $subject;
+
+    /** @var list<string> */
+    private array $tempFiles = [];
+
+    protected function setUp(): void
+    {
+        $this->subject = new QuizSpreadsheetService();
+    }
+
+    protected function tearDown(): void
+    {
+        foreach ($this->tempFiles as $path) {
+            if (file_exists($path)) {
+                unlink($path);
+            }
+        }
+    }
+
+    public function testGenerateTemplateProducesValidXlsx(): void
+    {
+        $path = $this->captureXlsx($this->subject->generateTemplate());
+
+        $this->assertSame(
+            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+            new File($path)->getMimeType(),
+        );
+    }
+
+    public function testGenerateTemplateWithoutExampleHasNoQuestions(): void
+    {
+        $path = $this->captureXlsx($this->subject->generateTemplate(fillExample: false));
+
+        $quiz = new Quiz();
+        $this->subject->xlsxToQuiz($quiz, new File($path));
+
+        $this->assertCount(0, $quiz->questions);
+    }
+
+    public function testGenerateTemplateExampleCanBeReimported(): void
+    {
+        $path = $this->captureXlsx($this->subject->generateTemplate(fillExample: true));
+
+        $quiz = new Quiz();
+        $this->subject->xlsxToQuiz($quiz, new File($path));
+
+        $this->assertCount(1, $quiz->questions);
+
+        /** @var Question $question */
+        $question = $quiz->questions->first();
+        $this->assertSame('Is de mol een man of een vrouw?', $question->question);
+        $this->assertCount(2, $question->answers);
+    }
+
+    public function testQuizToXlsxEmptyQuizImportsWithNoQuestions(): void
+    {
+        $path = $this->captureXlsx($this->subject->quizToXlsx(new Quiz()));
+
+        $imported = new Quiz();
+        $this->subject->xlsxToQuiz($imported, new File($path));
+
+        $this->assertCount(0, $imported->questions);
+    }
+
+    public function testQuizToXlsxRoundTrip(): void
+    {
+        $original = $this->makeQuiz();
+        $path = $this->captureXlsx($this->subject->quizToXlsx($original));
+
+        $imported = new Quiz();
+        $this->subject->xlsxToQuiz($imported, new File($path));
+
+        $this->assertCount(2, $imported->questions);
+
+        /** @var Question $first */
+        $first = $imported->questions->first();
+        $this->assertSame('Who is de Mol?', $first->question);
+        $this->assertCount(2, $first->answers);
+
+        $answers = $first->answers->toArray();
+        $this->assertSame('Alice', $answers[0]->text);
+        $this->assertFalse($answers[0]->isRightAnswer);
+        $this->assertSame('Bob', $answers[1]->text);
+        $this->assertTrue($answers[1]->isRightAnswer);
+
+        /** @var Question $second */
+        $second = $imported->questions->last();
+        $this->assertSame('What did de Mol sabotage?', $second->question);
+        $this->assertCount(3, $second->answers);
+    }
+
+    public function testXlsxToQuizThrowsOnInvalidMimeType(): void
+    {
+        $path = $this->createTempPath('.txt');
+        file_put_contents($path, 'not a spreadsheet');
+
+        $this->expectException(\InvalidArgumentException::class);
+        $this->subject->xlsxToQuiz(new Quiz(), new File($path));
+    }
+
+    public function testXlsxToQuizThrowsOnQuestionWithNoAnswers(): void
+    {
+        $quiz = new Quiz();
+        $question = new Question();
+        $question->question = 'Unanswered question';
+        $question->ordering = 1;
+        $quiz->addQuestion($question);
+
+        $path = $this->captureXlsx($this->subject->quizToXlsx($quiz));
+
+        try {
+            $this->subject->xlsxToQuiz(new Quiz(), new File($path));
+            $this->fail('Expected SpreadsheetDataException to be thrown');
+        } catch (SpreadsheetDataException $e) {
+            $this->assertNotEmpty($e->errors);
+        }
+    }
+
+    private function makeQuiz(): Quiz
+    {
+        $quiz = new Quiz();
+
+        $q1 = new Question();
+        $q1->question = 'Who is de Mol?';
+        $q1->ordering = 1;
+        $q1->addAnswer(new Answer('Alice', isRightAnswer: false));
+        $q1->addAnswer(new Answer('Bob', isRightAnswer: true));
+
+        $q2 = new Question();
+        $q2->question = 'What did de Mol sabotage?';
+        $q2->ordering = 2;
+        $q2->addAnswer(new Answer('The boat', isRightAnswer: true));
+        $q2->addAnswer(new Answer('The car', isRightAnswer: false));
+        $q2->addAnswer(new Answer('Nothing', isRightAnswer: false));
+
+        $quiz->addQuestion($q1);
+        $quiz->addQuestion($q2);
+
+        return $quiz;
+    }
+
+    private function captureXlsx(\Closure $closure): string
+    {
+        $path = $this->createTempPath('.xlsx');
+        ob_start();
+        $closure();
+        file_put_contents($path, ob_get_clean());
+
+        return $path;
+    }
+
+    private function createTempPath(string $suffix): string
+    {
+        $path = sys_get_temp_dir().\DIRECTORY_SEPARATOR.uniqid('tvdt_test_', more_entropy: true).$suffix;
+        $this->tempFiles[] = $path;
+
+        return $path;
+    }
+}