Refactor LLM route-first provider API (#28523)

packages/llm/test/endpoint.test.ts

@@ -1,37 +1,40 @@
 import { describe, expect, test } from "bun:test"
 import { LLM } from "../src"
+import * as OpenAIChat from "../src/protocols/openai-chat"
 import { Endpoint } from "../src/route"
+import { Model } from "../src/schema"
 
-const request = (input: { readonly baseURL: string; readonly queryParams?: Record<string, string> }) =>
+const request = () =>
   LLM.request({
-    model: LLM.model({
+    model: Model.make({
       id: "model-1",
       provider: "test",
-      route: "test-route",
-      baseURL: input.baseURL,
-      queryParams: input.queryParams,
+      route: OpenAIChat.route,
     }),
     prompt: "hello",
   })
 
 describe("Endpoint", () => {
   test("appends a static path to the model's baseURL", () => {
-    const url = Endpoint.render(Endpoint.path("/chat"), {
-      request: request({ baseURL: "https://api.example.test/v1/" }),
+    const url = Endpoint.render(Endpoint.path("/chat", { baseURL: "https://api.example.test/v1/" }), {
+      request: request(),
       body: {},
     })
 
     expect(url.toString()).toBe("https://api.example.test/v1/chat")
   })
 
-  test("model query params are appended to the rendered URL", () => {
-    const url = Endpoint.render(Endpoint.path("/chat?alt=sse"), {
-      request: request({
+  test("endpoint query params are appended to the rendered URL", () => {
+    const url = Endpoint.render(
+      Endpoint.path("/chat?alt=sse", {
         baseURL: "https://custom.example.test/root/",
-        queryParams: { "api-version": "2026-01-01", alt: "json" },
+        query: { "api-version": "2026-01-01", alt: "json" },
       }),
-      body: {},
-    })
+      {
+        request: request(),
+        body: {},
+      },
+    )
 
     expect(url.toString()).toBe("https://custom.example.test/root/chat?alt=json&api-version=2026-01-01")
   })
@@ -40,9 +43,10 @@ describe("Endpoint", () => {
     const url = Endpoint.render(
       Endpoint.path<{ readonly modelId: string }>(
         ({ body }) => `/model/${encodeURIComponent(body.modelId)}/converse-stream`,
+        { baseURL: "https://bedrock-runtime.us-east-1.amazonaws.com" },
       ),
       {
-        request: request({ baseURL: "https://bedrock-runtime.us-east-1.amazonaws.com" }),
+        request: request(),
         body: { modelId: "us.amazon.nova-micro-v1:0" },
       },
     )