MDL-82875 question export: test for not exporting hidden questions

question/format/aiken/tests/qformat_aiken_export_test.php

@@ -21,6 +21,8 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+use core_question\local\bank\question_version_status;
+
 defined('MOODLE_INTERNAL') || die();
 
 global $CFG;
@@ -111,4 +113,44 @@ public function test_export_multiline_question() {
 EOT;
         $this->assert_same_aiken($expectedoutput, $exporter->exportprocess());
     }
+
+    public function test_hidden_question_not_exported(): void {
+        $this->resetAfterTest();
+        $this->setAdminUser();
+
+        // Create a new course category and a new course in that.
+        $category = $this->getDataGenerator()->create_category();
+        $course = $this->getDataGenerator()->create_course(['category' => $category->id]);
+        $generator = $this->getDataGenerator()->get_plugin_generator('core_question');
+        $context = context_coursecat::instance($category->id);
+        $cat = $generator->create_question_category(['contextid' => $context->id]);
+
+        // Create a visible and a hidden question.
+        $generator->create_question('multichoice', 'one_of_four', [
+            'category' => $cat->id,
+            'questiontext' => ['text' => 'This question is the visible one.', 'format' => FORMAT_HTML],
+        ]);
+        $generator->create_question('multichoice', 'one_of_four', [
+            'category' => $cat->id,
+            'questiontext' => ['text' => 'This question is the hidden one.', 'format' => FORMAT_HTML],
+            'status' => question_version_status::QUESTION_STATUS_HIDDEN,
+        ]);
+
+        // Prepared the expected result.
+        $expectedoutput = <<<EOT
+This question is the visible one.
+A) One
+B) Two
+C) Three
+D) Four
+ANSWER: A
+
+EOT;
+
+        // Do the export and verify.
+        $exporter = new qformat_aiken();
+        $exporter->category = $cat;
+        $exporter->setCourse($course);
+        $this->assert_same_aiken($expectedoutput, $exporter->exportprocess());
+    }
 }