diff --git a/src/agents/pi-embedded-runner/extra-params.google.test.ts b/src/agents/pi-embedded-runner/extra-params.google.test.ts
index 8409a68e4c1..92a2356d5f9 100644
--- a/src/agents/pi-embedded-runner/extra-params.google.test.ts
+++ b/src/agents/pi-embedded-runner/extra-params.google.test.ts
@@ -21,6 +21,22 @@ afterEach(() => {
   extraParamsTesting.resetProviderRuntimeDepsForTest();
 });
 
+function runGoogleExtraParamsCase(params?: { cfg?: unknown }) {
+  return runExtraParamsCase({
+    ...(params?.cfg ? { cfg: params.cfg as never } : {}),
+    applyProvider: "google",
+    applyModelId: "gemini-2.5-pro",
+    model: {
+      api: "google-generative-ai",
+      provider: "google",
+      id: "gemini-2.5-pro",
+    } as unknown as Model<"openai-completions">,
+    payload: {
+      contents: [],
+    },
+  });
+}
+
 describe("extra-params: Google thinking payload compatibility", () => {
   it("strips negative thinking budgets and fills Gemini 3.1 thinkingLevel", () => {
     const payload = runExtraParamsCase({
@@ -51,7 +67,7 @@ describe("extra-params: Google thinking payload compatibility", () => {
   });
 
   it("passes cachedContent through Google extra params", () => {
-    const { options } = runExtraParamsCase({
+    const { options } = runGoogleExtraParamsCase({
       cfg: {
         agents: {
           defaults: {
@@ -64,16 +80,6 @@ describe("extra-params: Google thinking payload compatibility", () => {
             },
           },
         },
-      } as never,
-      applyProvider: "google",
-      applyModelId: "gemini-2.5-pro",
-      model: {
-        api: "google-generative-ai",
-        provider: "google",
-        id: "gemini-2.5-pro",
-      } as unknown as Model<"openai-completions">,
-      payload: {
-        contents: [],
       },
     });
 
@@ -83,7 +89,7 @@ describe("extra-params: Google thinking payload compatibility", () => {
   });
 
   it("lets higher-precedence cachedContent override lower-precedence cached_content", () => {
-    const { options } = runExtraParamsCase({
+    const { options } = runGoogleExtraParamsCase({
       cfg: {
         agents: {
           defaults: {
@@ -99,16 +105,6 @@ describe("extra-params: Google thinking payload compatibility", () => {
             },
           },
         },
-      } as never,
-      applyProvider: "google",
-      applyModelId: "gemini-2.5-pro",
-      model: {
-        api: "google-generative-ai",
-        provider: "google",
-        id: "gemini-2.5-pro",
-      } as unknown as Model<"openai-completions">,
-      payload: {
-        contents: [],
       },
     });