Placeholders for test_build_full_ai_prompt unit test

Author: marcusgreen

tests/question_test.php

@@ -113,6 +113,9 @@ public function test_get_question_summary(): void {
      */
     public function test_build_full_ai_prompt(): void {
         $this->resetAfterTest();
+        if (!$this->islive) {
+                $this->markTestSkipped('No live connection to the AI system');
+        }
 
         $question = qtype_aitext_test_helper::make_aitext_question([]);
         set_config('prompt', 'in [responsetext] ', 'qtype_aitext');
@@ -121,6 +124,9 @@ public function test_build_full_ai_prompt(): void {
         set_config('jsonprompt', 'testprompt', 'qtype_aitext');
 
         $response = '<p> Thank you </p>';
+        $aiprompt = '';
+        $defaultmark = '';
+        $markscheme = '';
         $result = $question->build_full_ai_prompt($response, $aiprompt, $defaultmark, $markscheme);
 
         $this->assertStringContainsString('[[ Thank you ]]', $result);