feat(cli): expand acp v1 support (#38325)

packages/cli/test/acp/event-behavior.test.ts

@@ -439,6 +439,7 @@ describe("acp event behavior", () => {
       sessionID: "ses_cancel",
       cwd: "/workspace",
       start: { type: "input", id: "input_cancel" },
+      writeTextFile: false,
       control,
       submit: async (signal) => {
         await fixture.client.session.prompt(
@@ -481,6 +482,7 @@ describe("acp event behavior", () => {
       sessionID: "ses_cancel_admission",
       cwd: "/workspace",
       start: { type: "input", id: "input_cancel_admission" },
+      writeTextFile: false,
       control,
       submit: (signal) =>
         fixture.client.session.prompt(
@@ -566,6 +568,7 @@ function turn(input: {
     sessionID: input.sessionID,
     cwd: "/workspace",
     start: { type: "input", id: input.inputID },
+    writeTextFile: false,
     control: { cancelled: false, admission: new AbortController() },
     submit: (signal) =>
       input.fixture.client.session.prompt({ sessionID: input.sessionID, id: input.inputID, text: "hello" }, { signal }),

packages/cli/test/acp/event.test.ts

@@ -96,6 +96,7 @@ test("acp prompt resolves after ordered turn updates", async () => {
       sessionID: "ses_test",
       cwd: "/workspace",
       start: { type: "input", id },
+      writeTextFile: false,
       control: { cancelled: false, admission: new AbortController() },
       submit: () => client.session.prompt({ sessionID: "ses_test", id, text: "hi" }),
     })

packages/cli/test/acp/initialize-auth.subprocess.test.ts

@@ -14,6 +14,7 @@ describe("acp initialize/auth subprocess", () => {
     expect(initialized.agentCapabilities?.mcpCapabilities?.sse).toBe(false)
     expect(initialized.agentCapabilities?.loadSession).toBe(true)
     expect(initialized.agentCapabilities?.sessionCapabilities?.close).toEqual({})
+    expect(initialized.agentCapabilities?.sessionCapabilities?.delete).toEqual({})
     expect(initialized.agentCapabilities?.sessionCapabilities?.fork).toEqual({})
     expect(initialized.agentCapabilities?.sessionCapabilities?.list).toEqual({})
     expect(initialized.agentCapabilities?.sessionCapabilities?.resume).toEqual({})

packages/cli/test/acp/lifecycle.subprocess.test.ts

@@ -1,5 +1,6 @@
 import type {
   CloseSessionResponse,
+  DeleteSessionResponse,
   ListSessionsResponse,
   LoadSessionResponse,
   ResumeSessionResponse,
@@ -60,6 +61,20 @@ describe("acp lifecycle subprocess", () => {
     expect(listed.sessions.some((item) => item.sessionId === session.sessionId)).toBe(true)
   }, 60_000)
 
+  test("delete capability and delete request", async () => {
+    await using fixture = await createAcpFixture()
+    const acp = fixture.spawn()
+    const initialized = await initialize(acp)
+    expect(initialized.agentCapabilities?.sessionCapabilities?.delete).toEqual({})
+    const session = await newSession(acp, fixture.home)
+
+    expect(
+      expectOk(await acp.request<DeleteSessionResponse>("session/delete", { sessionId: session.sessionId })),
+    ).toEqual({})
+    const listed = expectOk(await acp.request<ListSessionsResponse>("session/list", { cwd: fixture.home }))
+    expect(listed.sessions.some((item) => item.sessionId === session.sessionId)).toBe(false)
+  }, 60_000)
+
   test("resume capability advertisement", async () => {
     await using fixture = await createAcpFixture()
     const initialized = await initialize(fixture.spawn())

packages/cli/test/acp/permission-behavior.test.ts

@@ -4,6 +4,7 @@ import fs from "node:fs/promises"
 import os from "node:os"
 import path from "node:path"
 import { streamTurn } from "../../src/acp/event"
+import { syncEditedFiles } from "../../src/acp/permission"
 import { createSseFixture, durableEvent, ephemeralEvent, withTimeout } from "./sse-fixture"
 
 type SessionUpdateParams = Parameters<AgentSideConnection["sessionUpdate"]>[0]
@@ -12,6 +13,27 @@ type Connection = Pick<AgentSideConnection, "sessionUpdate" | "requestPermission
 type Fixture = ReturnType<typeof createSseFixture>
 
 describe("acp permission behavior", () => {
+  test("does not sync edits when writeTextFile was not advertised", async () => {
+    const writes: Parameters<AgentSideConnection["writeTextFile"]>[0][] = []
+
+    await syncEditedFiles({
+      connection: {
+        writeTextFile: async (input) => {
+          writes.push(input)
+          return {}
+        },
+      },
+      writeTextFile: false,
+      sessionID: "ses_no_write",
+      cwd: "/workspace",
+      toolName: "edit",
+      toolInput: { filePath: "/workspace/file.ts" },
+      structured: {},
+    })
+
+    expect(writes).toEqual([])
+  })
+
   test("forwards allow-once and allow-always selections to the generated client", async () => {
     const permissionRequests: RequestPermissionRequest[] = []
     const fixture = createSseFixture({
@@ -465,6 +487,7 @@ function startTurn(fixture: Fixture, connection: Connection, sessionID: string,
     sessionID,
     cwd,
     start: { type: "input", id: inputID },
+    writeTextFile: true,
     control: { cancelled: false, admission: new AbortController() },
     submit: (signal) => fixture.client.session.prompt({ sessionID, id: inputID, text: "hello" }, { signal }),
   })

packages/cli/test/acp/service-lifecycle.test.ts

@@ -225,6 +225,33 @@ describe("acp service lifecycle", () => {
       "/api/session/missing/interrupt",
     ])
   })
+
+  test("deletes sessions from backing and local storage", async () => {
+    await using fixture = makeACPFixture({
+      fetch(request) {
+        if (request.method === "POST" && request.path === "/api/session") {
+          return Response.json({ data: makeSession("ses_delete") })
+        }
+        if (request.method === "DELETE" && request.path === "/api/session/ses_delete") {
+          return new Response(null, { status: 204 })
+        }
+        return undefined
+      },
+    })
+    const session = await fixture.service.newSession({ cwd: "/workspace", mcpServers: [] })
+
+    expect(await fixture.service.deleteSession({ sessionId: session.sessionId })).toEqual({})
+    expect(fixture.requests).toContainEqual({
+      method: "DELETE",
+      path: "/api/session/ses_delete",
+      query: {},
+      body: undefined,
+    })
+    const missing = await fixture.service
+      .setSessionConfigOption({ sessionId: session.sessionId, configId: "effort", value: "high" })
+      .catch((error: unknown) => error)
+    expect(missing).toMatchObject({ _tag: "ACPSessionNotFoundError", sessionId: session.sessionId })
+  })
 })
 
 function currentValue(result: { readonly configOptions?: readonly SessionConfigOption[] | null }, id: string) {