import fs from "node:fs";import os from "node:os";import path from "node:path"; import { describe, expect, it } from "vitest"; import {  makeRuntimeCommand,  resolveProcessLaunchPlan,  runProcess,  spawnDetachedProcess,  spawnProcessSync,} from "./processRunner"; function withTempDir(run: (dir: string) => void): void {  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "t3-process-runner-"));  try {    run(dir);  } finally {    fs.rmSync(dir, { recursive: true, force: true });  }} describe("runProcess", () => {  it("fails when output exceeds max buffer in default mode", async () => {    await expect(      runProcess("node", ["-e", "process.stdout.write('x'.repeat(2048))"], { maxBufferBytes: 128 }),    ).rejects.toThrow("exceeded stdout buffer limit");  });   it("truncates output when outputMode is truncate", async () => {    const result = await runProcess("node", ["-e", "process.stdout.write('x'.repeat(2048))"], {      maxBufferBytes: 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("runs sync commands through the shared spawn strategy", () => {    const result = spawnProcessSync("node", ["-e", "process.stdout.write('ok')"], {      stdio: ["ignore", "pipe", "pipe"],    });     expect(result.error).toBeUndefined();    expect(result.status).toBe(0);    expect(result.stdout).toBe("ok");  });   it("spawns detached commands through the shared spawn strategy", async () => {    await expect(      spawnDetachedProcess(process.execPath, ["-e", "process.exit(0)"]),    ).resolves.toBeUndefined();  });}); describe("resolveProcessLaunchPlan", () => {  it("resolves native windows executables without using a shell", () => {    withTempDir((dir) => {      fs.writeFileSync(path.join(dir, "git.EXE"), "MZ");      const plan = resolveProcessLaunchPlan("git", ["status"], {        env: {          PATH: dir,          PATHEXT: ".COM;.EXE;.BAT;.CMD",        },        inheritParentEnv: false,        runtimeEnvironment: {          platform: "windows",          pathStyle: "windows",          isWsl: false,          windowsInteropMode: "windows-native",          wslDistroName: null,        },      });       expect(plan.command).toBe(path.join(dir, "git.EXE"));      expect(plan.args).toEqual(["status"]);      expect(plan.shell).toBe(false);    });  });   it("wraps windows batch launchers through cmd.exe without default shell mode", () => {    withTempDir((dir) => {      const wrapperPath = path.join(dir, "code.CMD");      fs.writeFileSync(wrapperPath, "@echo off\r\n");      const plan = resolveProcessLaunchPlan("code", ["C:\\repo\\a&b.ts"], {        env: {          PATH: dir,          PATHEXT: ".COM;.EXE;.BAT;.CMD",          COMSPEC: "C:\\Windows\\System32\\cmd.exe",        },        inheritParentEnv: false,        runtimeEnvironment: {          platform: "windows",          pathStyle: "windows",          isWsl: false,          windowsInteropMode: "windows-native",          wslDistroName: null,        },      });       expect(plan.command).toBe(wrapperPath);      expect(plan.args).toEqual(["C:\\repo\\a&b.ts"]);      expect(plan.shell).toBe("C:\\Windows\\System32\\cmd.exe");    });  });   it("resolves relative batch launchers against the configured cwd", () => {    withTempDir((dir) => {      const wrapperPath = path.join(dir, "code.CMD");      fs.writeFileSync(wrapperPath, "@echo off\r\n");       const plan = resolveProcessLaunchPlan("./code", ["pkg@^1.0"], {        cwd: dir,        env: {          PATHEXT: ".COM;.EXE;.BAT;.CMD",          COMSPEC: "C:\\Windows\\System32\\cmd.exe",        },        inheritParentEnv: false,        runtimeEnvironment: {          platform: "windows",          pathStyle: "windows",          isWsl: false,          windowsInteropMode: "windows-native",          wslDistroName: null,        },      });       expect(plan.command).toBe(wrapperPath);      expect(plan.args).toEqual(["pkg@^1.0"]);      expect(plan.shell).toBe("C:\\Windows\\System32\\cmd.exe");    });  });   it("preserves spaced batch launcher paths on windows", () => {    withTempDir((rootDir) => {      const dir = path.join(rootDir, "runner admin");      fs.mkdirSync(dir);      const wrapperPath = path.join(dir, "code.CMD");      fs.writeFileSync(wrapperPath, "@echo off\r\n");       const plan = resolveProcessLaunchPlan("code", ["--status"], {        env: {          PATH: dir,          PATHEXT: ".COM;.EXE;.BAT;.CMD",          COMSPEC: "C:\\Windows\\System32\\cmd.exe",        },        inheritParentEnv: false,        runtimeEnvironment: {          platform: "windows",          pathStyle: "windows",          isWsl: false,          windowsInteropMode: "windows-native",          wslDistroName: null,        },      });       expect(plan.command).toBe(wrapperPath);      expect(plan.args).toEqual(["--status"]);      expect(plan.shell).toBe("C:\\Windows\\System32\\cmd.exe");    });  });   it("keeps wsl-hosted commands on the linux direct exec path", () => {    const plan = resolveProcessLaunchPlan("code", ["/home/julius/repo"], {      runtimeEnvironment: {        platform: "linux",        pathStyle: "posix",        isWsl: true,        windowsInteropMode: "wsl-hosted",        wslDistroName: "Ubuntu",      },    });     expect(plan.command).toBe("code");    expect(plan.args).toEqual(["/home/julius/repo"]);    expect(plan.shell).toBe(false);  });   it("preserves explicit shell configuration", () => {    const plan = resolveProcessLaunchPlan("git", ["status"], {      shell: true,      runtimeEnvironment: {        platform: "windows",        pathStyle: "windows",        isWsl: false,        windowsInteropMode: "windows-native",        wslDistroName: null,      },    });     expect(plan.command).toBe("git");    expect(plan.args).toEqual(["status"]);    expect(plan.shell).toBe(true);  });}); describe("makeRuntimeCommand", () => {  it("uses the shared launch plan for batch commands on windows", () => {    withTempDir((dir) => {      const wrapperPath = path.join(dir, "code.CMD");      fs.writeFileSync(wrapperPath, "@echo off\r\n");       const command = makeRuntimeCommand("code", ["C:\\repo\\a&b.ts"], {        env: {          PATH: dir,          PATHEXT: ".COM;.EXE;.BAT;.CMD",          COMSPEC: "C:\\Windows\\System32\\cmd.exe",        },        extendEnv: false,        runtimeEnvironment: {          platform: "windows",          pathStyle: "windows",          isWsl: false,          windowsInteropMode: "windows-native",          wslDistroName: null,        },      });       expect(command.command).toBe(wrapperPath);      expect(command.args).toEqual(["C:\\repo\\a&b.ts"]);      expect(command.options.shell).toBe("C:\\Windows\\System32\\cmd.exe");    });  });});