test(session): port llm.test.ts to it.instance (#28578)

packages/opencode/src/session/llm.ts

@@ -1,4 +1,5 @@
 import { Provider } from "@/provider/provider"
+import { serviceUse } from "@/effect/service-use"
 import * as Log from "@opencode-ai/core/util/log"
 import { Context, Effect, Layer } from "effect"
 import * as Stream from "effect/Stream"
@@ -54,6 +55,8 @@ export interface Interface {
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/LLM") {}
 
+export const use = serviceUse(Service)
+
 const live: Layer.Layer<
   Service,
   never,

packages/opencode/test/fixture/fixture.ts

@@ -119,7 +119,7 @@ export async function tmpdir<T>(options?: TmpDirOptions<T>) {
 }
 
 /** Effectful scoped tmpdir. Cleaned up when the scope closes. Make sure these stay in sync */
-export function tmpdirScoped(options?: { git?: boolean; config?: Partial<Config.Info> }) {
+export function tmpdirScoped(options?: { git?: boolean; config?: Partial<Config.Info> | (() => Partial<Config.Info>) }) {
   return Effect.gen(function* () {
     const spawner = yield* ChildProcessSpawner.ChildProcessSpawner
     const dirpath = sanitizePath(path.join(os.tmpdir(), "opencode-test-" + Math.random().toString(36).slice(2)))
@@ -146,10 +146,11 @@ export function tmpdirScoped(options?: { git?: boolean; config?: Partial<Config.
     }
 
     if (options?.config) {
+      const resolved = typeof options.config === "function" ? options.config() : options.config
       yield* Effect.promise(() =>
         fs.writeFile(
           path.join(dir, "opencode.json"),
-          JSON.stringify({ $schema: "https://opencode.ai/config.json", ...options.config }),
+          JSON.stringify({ $schema: "https://opencode.ai/config.json", ...resolved }),
         ),
       )
     }
@@ -180,7 +181,7 @@ export const disposeAllInstancesEffect = InstanceStore.Service.use((store) => st
 
 export function provideTmpdirInstance<A, E, R>(
   self: (path: string) => Effect.Effect<A, E, R>,
-  options?: { git?: boolean; config?: Partial<Config.Info> },
+  options?: { git?: boolean; config?: Partial<Config.Info> | (() => Partial<Config.Info>) },
 ) {
   return Effect.gen(function* () {
     const path = yield* tmpdirScoped(options)
@@ -204,7 +205,7 @@ export function provideTmpdirInstance<A, E, R>(
 export class TestInstance extends Context.Service<TestInstance, { readonly directory: string }>()("@test/Instance") {}
 
 export const withTmpdirInstance =
-  (options?: { git?: boolean; config?: Partial<Config.Info> }) =>
+  (options?: { git?: boolean; config?: Partial<Config.Info> | (() => Partial<Config.Info>) }) =>
   <A, E, R>(self: Effect.Effect<A, E, R>) =>
     Effect.gen(function* () {
       const directory = yield* tmpdirScoped(options)

packages/opencode/test/lib/effect.ts

@@ -8,7 +8,7 @@ import type { Config } from "@/config/config"
 import { TestInstance, withTmpdirInstance } from "../fixture/fixture"
 
 type Body<A, E, R> = Effect.Effect<A, E, R> | (() => Effect.Effect<A, E, R>)
-type InstanceOptions = { git?: boolean; config?: Partial<Config.Info> }
+type InstanceOptions = { git?: boolean; config?: Partial<Config.Info> | (() => Partial<Config.Info>) }
 
 function isInstanceOptions(options: InstanceOptions | number | TestOptions | undefined): options is InstanceOptions {
   return !!options && typeof options === "object" && ("git" in options || "config" in options)