Expect the warning

We expect this example to throw a warning, and should test that. Also, without
`expectWarning`, the test fails.

Author: ccreutzi

tests/texampleTests.m

@@ -61,8 +61,9 @@ function testUsingDALLEToEditImages(~)
             UsingDALLEToEditImages;
         end
 
-        function testAnalyzeSentimentinTextUsingChatGPTinJSONMode(~)
-            AnalyzeSentimentinTextUsingChatGPTinJSONMode;
+        function testAnalyzeSentimentinTextUsingChatGPTinJSONMode(testCase)
+            testCase.verifyWarning(@AnalyzeSentimentinTextUsingChatGPTinJSONMode,...
+                "llms:warningJsonInstruction");
         end
     end