feat(acp-next): add directory snapshot service (#29241)

packages/opencode/test/acp-next/directory.test.ts

@@ -0,0 +1,185 @@
+import { describe, expect } from "bun:test"
+import { Directory } from "@/acp-next/directory"
+import { Command } from "@/command"
+import { ModelID, ProviderID } from "@/provider/schema"
+import { Provider } from "@/provider/provider"
+import { Effect, Layer } from "effect"
+import { it } from "../lib/effect"
+
+const command = (name: string): Command.Info => ({
+  name,
+  source: "command",
+  template: `run ${name}`,
+  hints: [],
+})
+
+const model = (providerID: ProviderID, id: string, variants?: Directory.ModelVariants): Provider.Model => ({
+  id: ModelID.make(id),
+  providerID,
+  api: {
+    id,
+    url: "https://example.com",
+    npm: "@ai-sdk/openai-compatible",
+  },
+  name: id,
+  family: "test",
+  capabilities: {
+    temperature: true,
+    reasoning: Boolean(variants),
+    attachment: false,
+    toolcall: true,
+    input: { text: true, audio: false, image: false, video: false, pdf: false },
+    output: { text: true, audio: false, image: false, video: false, pdf: false },
+    interleaved: false,
+  },
+  cost: {
+    input: 0,
+    output: 0,
+    cache: { read: 0, write: 0 },
+  },
+  limit: {
+    context: 128000,
+    output: 4096,
+  },
+  status: "active",
+  options: {},
+  headers: {},
+  release_date: "2026-01-01",
+  ...(variants ? { variants } : {}),
+})
+
+const snapshot = (directory: string) => {
+  const providerID = ProviderID.make(`provider-${directory}`)
+  const modelID = ModelID.make(`model-${directory}`)
+  const providers = {
+    [providerID]: {
+      id: providerID,
+      name: `Provider ${directory}`,
+      source: "config",
+      env: [],
+      options: {},
+      models: {
+        [modelID]: model(providerID, modelID, {
+          low: { reasoningEffort: "low" },
+          high: { reasoningEffort: "high" },
+        }),
+        [ModelID.make(`plain-${directory}`)]: model(providerID, `plain-${directory}`),
+      },
+    },
+  } satisfies Record<ProviderID, Provider.Info>
+
+  return Directory.build({
+    directory,
+    providers,
+    modes: [
+      { id: "build", name: `build-${directory}` },
+      { id: "plan", name: `plan-${directory}`, description: "plan first" },
+    ],
+    defaultModeID: "build",
+    commands: [command(`init-${directory}`), command(`review-${directory}`)],
+    defaultModel: { providerID, modelID },
+  })
+}
+
+const fakeLayer = (calls: string[]) =>
+  Directory.layer.pipe(
+    Layer.provide(
+      Layer.succeed(
+        Directory.Loader,
+        Directory.Loader.of({
+          load: (directory) =>
+            Effect.sync(() => {
+              calls.push(directory)
+              return snapshot(directory)
+            }),
+        }),
+      ),
+    ),
+  )
+
+describe("ACP next directory snapshot", () => {
+  it.effect("two concurrent callers share one load", () => {
+    const calls: string[] = []
+    return Effect.gen(function* () {
+      const directory = yield* Directory.Service
+      const [first, second] = yield* Effect.all([directory.get("alpha"), directory.get("alpha")], {
+        concurrency: "unbounded",
+      })
+
+      expect(calls).toEqual(["alpha"])
+      expect(first).toBe(second)
+    }).pipe(Effect.provide(fakeLayer(calls)))
+  })
+
+  it.effect("warm calls use cached data", () => {
+    const calls: string[] = []
+    return Effect.gen(function* () {
+      const directory = yield* Directory.Service
+      const first = yield* directory.get("alpha")
+      const second = yield* directory.get("alpha")
+
+      expect(calls).toEqual(["alpha"])
+      expect(first).toBe(second)
+    }).pipe(Effect.provide(fakeLayer(calls)))
+  })
+
+  it.effect("different directories get different snapshots", () => {
+    const calls: string[] = []
+    return Effect.gen(function* () {
+      const directory = yield* Directory.Service
+      const [alpha, beta] = yield* Effect.all([directory.get("alpha"), directory.get("beta")], {
+        concurrency: "unbounded",
+      })
+
+      expect(calls.toSorted()).toEqual(["alpha", "beta"])
+      expect(alpha.directory).toBe("alpha")
+      expect(beta.directory).toBe("beta")
+      expect(alpha.defaultModel?.providerID).not.toBe(beta.defaultModel?.providerID)
+    }).pipe(Effect.provide(fakeLayer(calls)))
+  })
+
+  it.effect("model variant lookup works", () =>
+    Effect.gen(function* () {
+      const directory = yield* Directory.Service
+      const alpha = yield* directory.get("alpha")
+      const model = alpha.defaultModel!
+
+      expect(directory.variants(alpha, model)).toEqual({
+        low: { reasoningEffort: "low" },
+        high: { reasoningEffort: "high" },
+      })
+      expect(directory.variants(alpha, { ...model, modelID: ModelID.make("missing") })).toBeUndefined()
+    }).pipe(Effect.provide(fakeLayer([]))),
+  )
+
+  it.effect("commands and modes are included", () =>
+    Effect.gen(function* () {
+      const directory = yield* Directory.Service
+      const alpha = yield* directory.get("alpha")
+
+      expect(alpha.availableCommands.map((item) => item.name)).toEqual(["init-alpha", "review-alpha"])
+      expect(alpha.availableModes).toEqual([
+        { id: "build", name: "build-alpha" },
+        { id: "plan", name: "plan-alpha", description: "plan first" },
+      ])
+      expect(alpha.defaultModeID).toBe("build")
+    }).pipe(Effect.provide(fakeLayer([]))),
+  )
+
+  it.effect("falls back when the default mode is not available", () =>
+    Effect.sync(() => {
+      expect(
+        Directory.build({
+          directory: "alpha",
+          providers: {},
+          modes: [
+            { id: "build", name: "Build" },
+            { id: "plan", name: "Plan" },
+          ],
+          defaultModeID: "hidden",
+          commands: [],
+        }).defaultModeID,
+      ).toBe("build")
+    }),
+  )
+})