import { describe, expect, it } from "@effect/vitest";import * as Deferred from "effect/Deferred";import * as Duration from "effect/Duration";import * as Effect from "effect/Effect";import * as Fiber from "effect/Fiber";import * as Layer from "effect/Layer";import * as Sink from "effect/Sink";import * as Stream from "effect/Stream";import { TestClock } from "effect/testing";import { ChildProcessSpawner } from "effect/unstable/process"; import {  isWindowsCommandNotFound,  ProcessOutputLimitError,  ProcessRunner,  ProcessTimeoutError,  layer as ProcessRunnerLive,  type ProcessRunInput,} from "./processRunner.ts"; type ChildProcessCommand = {  readonly command: string;  readonly args: ReadonlyArray<string>;}; // Accesses private properties of ChildProcessCommand for testing purposesfunction asChildProcessCommand(command: unknown): ChildProcessCommand {  return command as ChildProcessCommand;} function makeHandle(input: {  readonly stdout?: string | Stream.Stream<Uint8Array>;  readonly stderr?: string | Stream.Stream<Uint8Array>;  readonly code?: number;  readonly stdin?: ChildProcessSpawner.ChildProcessHandle["stdin"];  readonly exitCode?: Effect.Effect<ChildProcessSpawner.ExitCode>;}) {  return ChildProcessSpawner.makeHandle({    pid: ChildProcessSpawner.ProcessId(1),    exitCode: input.exitCode ?? Effect.succeed(ChildProcessSpawner.ExitCode(input.code ?? 0)),    isRunning: Effect.succeed(false),    kill: () => Effect.void,    unref: Effect.succeed(Effect.void),    stdin: input.stdin ?? Sink.drain,    stdout:      typeof input.stdout === "string"        ? Stream.encodeText(Stream.make(input.stdout))        : (input.stdout ?? Stream.empty),    stderr:      typeof input.stderr === "string"        ? Stream.encodeText(Stream.make(input.stderr))        : (input.stderr ?? Stream.empty),    all: Stream.empty,    getInputFd: () => Sink.drain,    getOutputFd: () => Stream.empty,  });} function makeSpawner(  f: (command: ChildProcessCommand) => Effect.Effect<ChildProcessSpawner.ChildProcessHandle>,) {  return ChildProcessSpawner.make((command) => f(asChildProcessCommand(command)));} const runWith =  (spawner: ChildProcessSpawner.ChildProcessSpawner["Service"]) => (input: ProcessRunInput) =>    Effect.service(ProcessRunner).pipe(      Effect.flatMap((runner) =>        runner.run({          ...input,          shell: input.shell ?? false,        }),      ),      Effect.provide(        ProcessRunnerLive.pipe(          Layer.provide(Layer.succeed(ChildProcessSpawner.ChildProcessSpawner, spawner)),        ),      ),    ); describe("runProcess", () => {  it.effect("collects stdout through an injected ChildProcessSpawner", () =>    Effect.gen(function* () {      const spawner = makeSpawner((command) =>        Effect.sync(() => {          expect(command.command).toBe("fake");          expect(command.args).toEqual(["stdout-bytes", "32"]);          return makeHandle({ stdout: "x".repeat(32) });        }),      );       const result = yield* runWith(spawner)({        command: "fake",        args: ["stdout-bytes", "32"],      });       expect(result.code).toBe(0);      expect(result.stdout).toBe("x".repeat(32));      expect(result.timedOut).toBe(false);    }),  );   it.effect("runs through the ProcessRunner service", () => {    const spawner = makeSpawner((command) =>      Effect.sync(() => {        expect(command.command).toBe("fake");        expect(command.args).toEqual(["--service"]);        return makeHandle({ stdout: "service ok" });      }),    );    const layer = ProcessRunnerLive.pipe(      Layer.provide(Layer.succeed(ChildProcessSpawner.ChildProcessSpawner, spawner)),    );     return Effect.gen(function* () {      const runner = yield* ProcessRunner;      const result = yield* runner.run({        command: "fake",        args: ["--service"],      });       expect(result.stdout).toBe("service ok");    }).pipe(Effect.provide(layer));  });   it.effect("fails when output exceeds max buffer in default mode", () =>    Effect.gen(function* () {      const spawner = makeSpawner(() => Effect.succeed(makeHandle({ stdout: "x".repeat(2048) })));       const error = yield* runWith(spawner)({        command: "fake",        args: ["stdout-bytes", "2048"],        maxOutputBytes: 128,      }).pipe(Effect.flip);       expect(error).toBeInstanceOf(ProcessOutputLimitError);    }),  );   it.effect("fails fast on output limit before timeout for long-running output", () =>    Effect.gen(function* () {      const textChunk = "x".repeat(64);      const spawner = makeSpawner(() =>        Effect.succeed(          makeHandle({            stdout: Stream.fromIterable(Array.from({ length: 10 }, () => textChunk)).pipe(              Stream.encodeText,            ),            exitCode: Effect.never,          }),        ),      );       const error = yield* runWith(spawner)({        command: "fake",        args: ["spam-stdout"],        maxOutputBytes: 128,        timeout: "2 seconds",      }).pipe(Effect.flip);       expect(error).toBeInstanceOf(ProcessOutputLimitError);    }),  );   it.effect("truncates output when outputMode is truncate", () =>    Effect.gen(function* () {      const spawner = makeSpawner(() => Effect.succeed(makeHandle({ stdout: "x".repeat(2048) })));       const result = yield* runWith(spawner)({        command: "fake",        args: ["stdout-bytes", "2048"],        maxOutputBytes: 128,        outputMode: "truncate",      });       expect(result.code).toBe(0);      expect(result.stdout.length).toBeLessThanOrEqual(128);      expect(result.stdoutTruncated).toBe(true);      expect(result.stderrTruncated).toBe(false);    }),  );   it.effect("writes stdin before waiting for exit", () =>    Effect.gen(function* () {      const stdinWritten = yield* Deferred.make<void>();      const decoder = new TextDecoder();      const spawner = makeSpawner(() =>        Effect.succeed(          makeHandle({            stdout: "stdin payload",            stdin: Sink.forEach((chunk: Uint8Array) => {              const text = decoder.decode(chunk, { stream: true });              return text.includes("stdin payload")                ? Deferred.succeed(stdinWritten, undefined)                : Effect.void;            }),            exitCode: Deferred.await(stdinWritten).pipe(Effect.as(ChildProcessSpawner.ExitCode(0))),          }),        ),      );       const result = yield* runWith(spawner)({        command: "fake",        args: ["stdin-echo"],        stdin: "stdin payload",      });       expect(result.stdout).toBe("stdin payload");      expect(result.code).toBe(0);    }),  );   it.effect("returns output for non-zero exit codes", () =>    Effect.gen(function* () {      const spawner = makeSpawner(() => Effect.succeed(makeHandle({ stderr: "boom", code: 2 })));       const result = yield* runWith(spawner)({        command: "fake",        args: ["stderr-exit", "boom", "2"],      });       expect(result.code).toBe(2);      expect(result.stderr).toBe("boom");    }),  );   it.effect("fails on timeout", () =>    Effect.gen(function* () {      const spawner = makeSpawner(() =>        Effect.succeed(          makeHandle({            exitCode: Effect.never,          }),        ),      );      const errorFiber = yield* runWith(spawner)({        command: "fake",        args: ["sleep"],        timeout: "50 millis",      }).pipe(Effect.flip, Effect.forkScoped);       yield* Effect.yieldNow;      yield* TestClock.adjust(Duration.millis(50));      const error = yield* Fiber.join(errorFiber);       expect(error).toBeInstanceOf(ProcessTimeoutError);    }),  );   it.effect("returns a synthetic timed out result when timeoutBehavior is timedOutResult", () =>    Effect.gen(function* () {      const spawner = makeSpawner(() =>        Effect.succeed(          makeHandle({            exitCode: Effect.never,          }),        ),      );      const resultFiber = yield* runWith(spawner)({        command: "fake",        args: ["sleep"],        timeout: "50 millis",        timeoutBehavior: "timedOutResult",      }).pipe(Effect.forkScoped);       yield* Effect.yieldNow;      yield* TestClock.adjust(Duration.millis(50));      const result = yield* Fiber.join(resultFiber);       expect(result).toMatchObject({        stdout: "",        stderr: "",        code: null,        timedOut: true,        stdoutTruncated: false,        stderrTruncated: false,      });    }),  );}); describe("isWindowsCommandNotFound", () => {  it("matches the localized German cmd.exe error text", () => {    const originalPlatform = process.platform;    Object.defineProperty(process, "platform", { value: "win32", configurable: true });     try {      expect(        isWindowsCommandNotFound(          1,          "wird nicht als interner oder externer Befehl, betriebsfahiges Programm oder Batch-Datei erkannt",        ),      ).toBe(true);    } finally {      Object.defineProperty(process, "platform", { value: originalPlatform, configurable: true });    }  });});