fix(provider): omit deprecated Gemini sampling defaults (#38924)

Co-authored-by: Aiden Cline <rekram1-node@users.noreply.github.com>
2026-07-27 23:21:00 -05:00
parent d50b9e8f9a
commit 5e39051183
2 changed files with 80 additions and 7 deletions
@@ -3186,7 +3186,69 @@ describe("ProviderTransform.message - cache control on gateway", () => {

 describe("ProviderTransform.temperature - Cohere North", () => {
  test("defaults north-mini-code models to 1.0", () => {
-    expect(ProviderTransform.temperature({ id: "cohere/North-Mini-Code-1-0-latest" } as any)).toBe(1.0)
+    expect(
+      ProviderTransform.temperature({
+        id: "cohere/North-Mini-Code-1-0-latest",
+        api: { id: "North-Mini-Code-1-0-latest" },
+      } as any),
+    ).toBe(1.0)
+  })
+})
+
+describe("ProviderTransform sampling defaults - Gemini", () => {
+  const model = (id: string) =>
+    ({
+      id: `google/${id}`,
+      api: { id },
+    }) as any
+
+  const alias = (id: string, apiID: string) =>
+    ({
+      id,
+      api: { id: apiID },
+    }) as any
+
+  test.each([
+    "gemini-3.5-flash-lite",
+    "gemini-3-5-flash-lite",
+    "gemini-3.6-flash",
+    "gemini-3-6-flash",
+    "gemini-4-pro",
+    "gemini-future",
+  ])("omits deprecated sampling controls for %s", (id) => {
+    expect(ProviderTransform.temperature(model(id))).toBeUndefined()
+    expect(ProviderTransform.topP(model(id))).toBeUndefined()
+    expect(ProviderTransform.topK(model(id))).toBeUndefined()
+  })
+
+  test.each([
+    "gemini-2.5-flash",
+    "gemini-2.5-pro",
+    "gemini-2.5-flash-lite",
+    "gemini-2-5-flash-lite",
+    "gemini-3-flash-preview",
+    "gemini-3-pro-image",
+    "gemini-3.1-flash-lite",
+    "gemini-3.1-pro-preview",
+    "gemini-3-1-pro-preview",
+    "gemini-3.5-flash",
+    "gemini-3-5-flash",
+  ])("preserves sampling defaults for %s", (id) => {
+    expect(ProviderTransform.temperature(model(id))).toBe(1)
+    expect(ProviderTransform.topP(model(id))).toBe(0.95)
+    expect(ProviderTransform.topK(model(id))).toBe(64)
+  })
+
+  test("uses the API model ID for configured aliases", () => {
+    const deprecated = alias("google/gemini-3.5-flash", "google/gemini-3.6-flash")
+    expect(ProviderTransform.temperature(deprecated)).toBeUndefined()
+    expect(ProviderTransform.topP(deprecated)).toBeUndefined()
+    expect(ProviderTransform.topK(deprecated)).toBeUndefined()
+
+    const supported = alias("my-gemini", "google/gemini-2.5-flash")
+    expect(ProviderTransform.temperature(supported)).toBe(1)
+    expect(ProviderTransform.topP(supported)).toBe(0.95)
+    expect(ProviderTransform.topK(supported)).toBe(64)
  })
 })