Skip unsupported model test

Author: Folyd

aiscript-vm/src/ai/mod.rs

@@ -112,7 +112,7 @@ impl AiConfig {
                         })
                     }
                 }
-                m => Err(format!("Unsupported model `{m}`.")),
+                m => Err(format!("Unsupported model '{m}'.")),
             }
         } else {
             // Default is OpenAI model

tests/integration/ai/prompt.ai

@@ -1,3 +1,3 @@
 let p = "What is AIScript?";
 let a = prompt p;
-print(a); // expect: AI: What is AIScript?
+print(a); // expect: AI: What is AIScript?

tests/integration/ai/unsupported_model.ai

@@ -0,0 +1,6 @@
+// ignore
+let a = prompt {
+    input: "hi",
+    model: "invalid-model",
+};
+// expect runtime error: Unsupported model 'invalid-model'.