import { expect, it } from "@effect/vitest";import { HostProcessEnvironment } from "@t3tools/shared/hostProcess";import * as Effect from "effect/Effect";import * as Fiber from "effect/Fiber"; import {  SERVICE_LAUNCHER_CONTEXT_ENV,  SERVICE_LAUNCHER_PROTOCOL,  type ServiceLauncherChildMessage,  type ServiceLauncherParentMessage,} from "./serviceProtocol.ts";import * as ServiceLauncherClient from "./serviceLauncherClient.ts"; class FakeLauncherProcess {  readonly connected = true;  readonly env: Record<string, string | undefined>;  readonly sent: ServiceLauncherChildMessage[] = [];  readonly #listeners = new Map<string, Set<(...args: ReadonlyArray<unknown>) => void>>();   constructor(context: unknown) {    this.env = { [SERVICE_LAUNCHER_CONTEXT_ENV]: JSON.stringify(context) };  }   send = (message: ServiceLauncherChildMessage, callback?: (error: Error | null) => void) => {    this.sent.push(message);    callback?.(null);    return true;  };   on = (event: "message" | "disconnect", listener: (...args: ReadonlyArray<unknown>) => void) => {    const listeners = this.#listeners.get(event) ?? new Set();    listeners.add(listener);    this.#listeners.set(event, listeners);  };   off = (event: "message" | "disconnect", listener: (...args: ReadonlyArray<unknown>) => void) => {    this.#listeners.get(event)?.delete(listener);  };   emit(message: ServiceLauncherParentMessage) {    for (const listener of this.#listeners.get("message") ?? []) listener(message);  }} const makeClient = (host: FakeLauncherProcess, currentVersion: string) =>  ServiceLauncherClient.make({ currentVersion }).pipe(    Effect.provideService(ServiceLauncherClient.ServiceLauncherHostProcess, host),    Effect.provideService(HostProcessEnvironment, host.env),  ); it.effect("waits for the launcher to durably commit the trial update ID", () =>  Effect.gen(function* () {    const pending = {      id: "update-1",      fromVersion: "1.0.0",      targetVersion: "1.1.0",      dbPath: "/tmp/state.sqlite",      status: "pending" as const,    };    const host = new FakeLauncherProcess({      protocol: SERVICE_LAUNCHER_PROTOCOL,      childVersion: "1.1.0",      update: pending,    });    const client = yield* makeClient(host, "1.1.0");    const prepared = yield* Effect.forkChild(client.prepareTrial, { startImmediately: true });    yield* Effect.yieldNow;    expect(host.sent).toEqual([{ type: "prepared", updateId: "update-1" }]);     const committed = {      id: pending.id,      fromVersion: pending.fromVersion,      targetVersion: pending.targetVersion,      status: "committed" as const,    };    host.emit({ type: "committed", updateId: committed.id });    expect(yield* Fiber.join(prepared)).toEqual(committed);  }),); it.effect("returns the launcher-generated ID only after update acceptance", () =>  Effect.gen(function* () {    const host = new FakeLauncherProcess({      protocol: SERVICE_LAUNCHER_PROTOCOL,      childVersion: "1.0.0",    });    const client = yield* makeClient(host, "1.0.0");    const requested = yield* Effect.forkChild(      client.requestUpdate({ targetVersion: "1.1.0", dbPath: "/tmp/state.sqlite" }),      { startImmediately: true },    );    yield* Effect.yieldNow;    host.emit({      type: "update-accepted",      updateId: "launcher-id",    });    expect(yield* Fiber.join(requested)).toBe("launcher-id");  }),); it.effect("preserves a launcher rejection as a distinct error", () =>  Effect.gen(function* () {    const host = new FakeLauncherProcess({      protocol: SERVICE_LAUNCHER_PROTOCOL,      childVersion: "1.0.0",    });    const client = yield* makeClient(host, "1.0.0");    const requested = yield* Effect.forkChild(      client.requestUpdate({ targetVersion: "1.1.0", dbPath: "/tmp/state.sqlite" }),      { startImmediately: true },    );    yield* Effect.yieldNow;    host.emit({ type: "update-rejected", reason: "requires local update" });    expect(yield* Fiber.join(requested).pipe(Effect.flip)).toMatchObject({      _tag: "ServiceLauncherRejectedError",      targetVersion: "1.1.0",      reason: "requires local update",    });  }),); it.effect("rejects contradictory trial context instead of leaving activation closed", () =>  Effect.gen(function* () {    const host = new FakeLauncherProcess({      protocol: SERVICE_LAUNCHER_PROTOCOL,      childVersion: "1.1.0",      update: {        id: "update-1",        fromVersion: "1.0.0",        targetVersion: "1.2.0",        dbPath: "/tmp/state.sqlite",        status: "pending",      },    });    const error = yield* makeClient(host, "1.1.0").pipe(Effect.flip);    expect(error.message).toBe("The service launcher supplied invalid startup context.");  }),);