Serialize tests that generate locally

Author: mattt

Tests/AnyLanguageModelTests/LlamaLanguageModelTests.swift

@@ -6,6 +6,7 @@ import Testing
 #if Llama
     @Suite(
         "LlamaLanguageModel",
+        .serialized,
         .enabled(if: ProcessInfo.processInfo.environment["LLAMA_MODEL_PATH"] != nil)
     )
     struct LlamaLanguageModelTests {

Tests/AnyLanguageModelTests/OllamaLanguageModelTests.swift

@@ -3,7 +3,11 @@ import Testing
 
 @testable import AnyLanguageModel
 
-@Suite("OllamaLanguageModel", .enabled(if: ProcessInfo.processInfo.environment["CI"] == nil))
+@Suite(
+    "OllamaLanguageModel",
+    .serialized,
+    .enabled(if: ProcessInfo.processInfo.environment["CI"] == nil)
+)
 struct OllamaLanguageModelTests {
     let model = OllamaLanguageModel(model: "qwen3:8b")
 

Tests/AnyLanguageModelTests/SystemLanguageModelTests.swift

@@ -10,7 +10,10 @@ import AnyLanguageModel
         }
     }()
 
-    @Suite("SystemLanguageModel", .enabled(if: isSystemLanguageModelAvailable))
+    @Suite(
+        "SystemLanguageModel",
+        .enabled(if: isSystemLanguageModelAvailable)
+    )
     struct SystemLanguageModelTests {
         @available(macOS 26.0, *)
         @Test func basicResponse() async throws {