import { describe, expect, it, vi } from "vitest"; import {  extractPathFromShellOutput,  isCommandAvailable,  listLoginShellCandidates,  mergePathEntries,  mergePathValues,  readEnvironmentFromLoginShell,  readEnvironmentFromWindowsShell,  readPathFromLaunchctl,  readPathFromLoginShell,  resolveCommandPath,  resolveKnownWindowsCliDirs,  resolveWindowsEnvironment,} from "./shell.ts"; describe("extractPathFromShellOutput", () => {  it("extracts the path between capture markers", () => {    expect(      extractPathFromShellOutput(        "__T3CODE_PATH_START__\n/opt/homebrew/bin:/usr/bin\n__T3CODE_PATH_END__\n",      ),    ).toBe("/opt/homebrew/bin:/usr/bin");  });   it("ignores shell startup noise around the capture markers", () => {    expect(      extractPathFromShellOutput(        "Welcome to fish\n__T3CODE_PATH_START__\n/opt/homebrew/bin:/usr/bin\n__T3CODE_PATH_END__\nBye\n",      ),    ).toBe("/opt/homebrew/bin:/usr/bin");  });   it("returns null when the markers are missing", () => {    expect(extractPathFromShellOutput("/opt/homebrew/bin /usr/bin")).toBeNull();  });}); describe("readPathFromLoginShell", () => {  it("uses a shell-agnostic printenv PATH probe", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() => "__T3CODE_ENV_PATH_START__\n/a:/b\n__T3CODE_ENV_PATH_END__\n");     expect(readPathFromLoginShell("/opt/homebrew/bin/fish", execFile)).toBe("/a:/b");    expect(execFile).toHaveBeenCalledTimes(1);     const firstCall = execFile.mock.calls[0] as      | [string, ReadonlyArray<string>, { encoding: "utf8"; timeout: number }]      | undefined;    expect(firstCall).toBeDefined();    if (!firstCall) {      throw new Error("Expected execFile to be called");    }     const [shell, args, options] = firstCall;    expect(shell).toBe("/opt/homebrew/bin/fish");    expect(args).toHaveLength(2);    expect(args?.[0]).toBe("-ilc");    expect(args?.[1]).toContain("printenv PATH || true");    expect(args?.[1]).toContain("__T3CODE_ENV_PATH_START__");    expect(args?.[1]).toContain("__T3CODE_ENV_PATH_END__");    expect(options).toEqual({ encoding: "utf8", timeout: 5000 });  });}); describe("readPathFromLaunchctl", () => {  it("returns a trimmed PATH value from launchctl", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() => "  /opt/homebrew/bin:/usr/bin  \n");     expect(readPathFromLaunchctl(execFile)).toBe("/opt/homebrew/bin:/usr/bin");    expect(execFile).toHaveBeenCalledWith("/bin/launchctl", ["getenv", "PATH"], {      encoding: "utf8",      timeout: 2000,    });  });   it("returns undefined when launchctl is unavailable", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() => {      throw new Error("spawn /bin/launchctl ENOENT");    });     expect(readPathFromLaunchctl(execFile)).toBeUndefined();  });}); describe("readEnvironmentFromLoginShell", () => {  it("extracts multiple environment variables from a login shell command", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() =>      [        "__T3CODE_ENV_PATH_START__",        "/a:/b",        "__T3CODE_ENV_PATH_END__",        "__T3CODE_ENV_SSH_AUTH_SOCK_START__",        "/tmp/secretive.sock",        "__T3CODE_ENV_SSH_AUTH_SOCK_END__",      ].join("\n"),    );     expect(readEnvironmentFromLoginShell("/bin/zsh", ["PATH", "SSH_AUTH_SOCK"], execFile)).toEqual({      PATH: "/a:/b",      SSH_AUTH_SOCK: "/tmp/secretive.sock",    });    expect(execFile).toHaveBeenCalledTimes(1);  });   it("omits environment variables that are missing or empty", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() =>      [        "__T3CODE_ENV_PATH_START__",        "/a:/b",        "__T3CODE_ENV_PATH_END__",        "__T3CODE_ENV_SSH_AUTH_SOCK_START__",        "__T3CODE_ENV_SSH_AUTH_SOCK_END__",      ].join("\n"),    );     expect(readEnvironmentFromLoginShell("/bin/zsh", ["PATH", "SSH_AUTH_SOCK"], execFile)).toEqual({      PATH: "/a:/b",    });  });   it("preserves surrounding whitespace in captured values", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() =>      ["__T3CODE_ENV_CUSTOM_VAR_START__", "  padded value  ", "__T3CODE_ENV_CUSTOM_VAR_END__"].join(        "\n",      ),    );     expect(readEnvironmentFromLoginShell("/bin/zsh", ["CUSTOM_VAR"], execFile)).toEqual({      CUSTOM_VAR: "  padded value  ",    });  });}); describe("listLoginShellCandidates", () => {  it("returns env shell, user shell, then the platform fallback without duplicates", () => {    expect(listLoginShellCandidates("darwin", " /opt/homebrew/bin/nu ", "/bin/zsh")).toEqual([      "/opt/homebrew/bin/nu",      "/bin/zsh",    ]);  });   it("falls back to the platform default when no shells are available", () => {    expect(listLoginShellCandidates("linux", undefined, "")).toEqual(["/bin/bash"]);  });}); describe("mergePathEntries", () => {  it("prefers login-shell PATH entries and keeps inherited extras", () => {    expect(      mergePathEntries("/opt/homebrew/bin:/usr/bin", "/Users/test/.local/bin:/usr/bin", "darwin"),    ).toBe("/opt/homebrew/bin:/usr/bin:/Users/test/.local/bin");  });   it("uses the platform-specific delimiter", () => {    expect(mergePathEntries("C:\\Tools;C:\\Windows", "C:\\Windows;C:\\Git", "win32")).toBe(      "C:\\Tools;C:\\Windows;C:\\Git",    );  });}); describe("readEnvironmentFromWindowsShell", () => {  it("extracts environment variables from a PowerShell command", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(      () =>        "__T3CODE_ENV_PATH_START__\nC:\\Users\\testuser\\AppData\\Roaming\\npm\n__T3CODE_ENV_PATH_END__\n",    );     expect(readEnvironmentFromWindowsShell(["PATH"], execFile)).toEqual({      PATH: "C:\\Users\\testuser\\AppData\\Roaming\\npm",    });    expect(execFile).toHaveBeenCalledWith(      "pwsh.exe",      expect.arrayContaining(["-NoLogo", "-NoProfile", "-NonInteractive", "-Command"]),      { encoding: "utf8", timeout: 5000 },    );  });   it("strips CRLF delimiters from captured PowerShell values", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(      () =>        "__T3CODE_ENV_FNM_DIR_START__\r\nC:\\Users\\testuser\\AppData\\Roaming\\fnm\r\n__T3CODE_ENV_FNM_DIR_END__\r\n",    );     expect(readEnvironmentFromWindowsShell(["FNM_DIR"], execFile)).toEqual({      FNM_DIR: "C:\\Users\\testuser\\AppData\\Roaming\\fnm",    });  });   it("omits -NoProfile when loadProfile is enabled", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >(() => "__T3CODE_ENV_PATH_START__\nC:\\Tools\n__T3CODE_ENV_PATH_END__\n");     expect(readEnvironmentFromWindowsShell(["PATH"], { loadProfile: true }, execFile)).toEqual({      PATH: "C:\\Tools",    });    expect(execFile).toHaveBeenCalledWith(      "pwsh.exe",      expect.arrayContaining(["-NoLogo", "-NonInteractive", "-Command"]),      { encoding: "utf8", timeout: 5000 },    );    expect(execFile.mock.calls[0]?.[1]).not.toContain("-NoProfile");  });   it("falls back to Windows PowerShell when pwsh.exe is unavailable", () => {    const execFile = vi.fn<      (        file: string,        args: ReadonlyArray<string>,        options: { encoding: "utf8"; timeout: number },      ) => string    >((file) => {      if (file === "pwsh.exe") {        throw new Error("spawn pwsh.exe ENOENT");      }      return "__T3CODE_ENV_PATH_START__\nC:\\Tools\n__T3CODE_ENV_PATH_END__\n";    });     expect(readEnvironmentFromWindowsShell(["PATH"], execFile)).toEqual({      PATH: "C:\\Tools",    });    expect(execFile).toHaveBeenNthCalledWith(1, "pwsh.exe", expect.any(Array), {      encoding: "utf8",      timeout: 5000,    });    expect(execFile).toHaveBeenNthCalledWith(2, "powershell.exe", expect.any(Array), {      encoding: "utf8",      timeout: 5000,    });  });}); describe("mergePathValues", () => {  it("dedupes case-insensitively on Windows while preserving preferred order", () => {    expect(      mergePathValues(        'C:\\Users\\testuser\\AppData\\Roaming\\npm;"C:\\Program Files\\nodejs"',        "c:\\users\\testuser\\appdata\\roaming\\npm;C:\\Windows\\System32",        "win32",      ),    ).toBe(      'C:\\Users\\testuser\\AppData\\Roaming\\npm;"C:\\Program Files\\nodejs";C:\\Windows\\System32',    );  });   it("dedupes case-sensitively on POSIX", () => {    expect(mergePathValues("/usr/local/bin:/usr/bin", "/usr/bin:/USR/BIN", "linux")).toBe(      "/usr/local/bin:/usr/bin:/USR/BIN",    );  });}); describe("resolveKnownWindowsCliDirs", () => {  it("returns known Windows CLI install directories in priority order", () => {    expect(      resolveKnownWindowsCliDirs({        APPDATA: "C:\\Users\\testuser\\AppData\\Roaming",        LOCALAPPDATA: "C:\\Users\\testuser\\AppData\\Local",        USERPROFILE: "C:\\Users\\testuser",      }),    ).toEqual([      "C:\\Users\\testuser\\AppData\\Roaming\\npm",      "C:\\Users\\testuser\\AppData\\Local\\Programs\\nodejs",      "C:\\Users\\testuser\\AppData\\Local\\Volta\\bin",      "C:\\Users\\testuser\\AppData\\Local\\pnpm",      "C:\\Users\\testuser\\.bun\\bin",      "C:\\Users\\testuser\\scoop\\shims",    ]);  });}); describe("isCommandAvailable", () => {  it("returns false when PATH is empty", () => {    expect(      isCommandAvailable("definitely-not-installed", {        platform: "win32",        env: { PATH: "", PATHEXT: ".COM;.EXE;.BAT;.CMD" },      }),    ).toBe(false);  });}); describe("resolveCommandPath", () => {  it("returns the first executable resolved from PATH", () => {    expect(      resolveCommandPath("definitely-not-installed", {        platform: "win32",        env: { PATH: "", PATHEXT: ".COM;.EXE;.BAT;.CMD" },      }),    ).toBeNull();  });}); describe("resolveWindowsEnvironment", () => {  it("returns the baseline no-profile PATH patch when node is already available", () => {    const readEnvironment = vi.fn(      (_names: ReadonlyArray<string>, options?: { loadProfile?: boolean }) =>        options?.loadProfile          ? { PATH: "C:\\Profile\\Bin" }          : { PATH: "C:\\Shell\\Bin;C:\\Windows\\System32" },    );    const commandAvailable = vi.fn(() => true);     expect(      resolveWindowsEnvironment(        {          PATH: "C:\\Windows\\System32",          APPDATA: "C:\\Users\\testuser\\AppData\\Roaming",          LOCALAPPDATA: "C:\\Users\\testuser\\AppData\\Local",          USERPROFILE: "C:\\Users\\testuser",        },        {          readEnvironment,          commandAvailable,        },      ),    ).toEqual({      PATH: [        "C:\\Users\\testuser\\AppData\\Roaming\\npm",        "C:\\Users\\testuser\\AppData\\Local\\Programs\\nodejs",        "C:\\Users\\testuser\\AppData\\Local\\Volta\\bin",        "C:\\Users\\testuser\\AppData\\Local\\pnpm",        "C:\\Users\\testuser\\.bun\\bin",        "C:\\Users\\testuser\\scoop\\shims",        "C:\\Shell\\Bin",        "C:\\Windows\\System32",      ].join(";"),    });    expect(readEnvironment).toHaveBeenCalledTimes(1);    expect(readEnvironment).toHaveBeenCalledWith(["PATH"], { loadProfile: false });    expect(commandAvailable).toHaveBeenCalledWith(      "node",      expect.objectContaining({        platform: "win32",      }),    );  });   it("loads the PowerShell profile when baseline env cannot resolve node", () => {    const readEnvironment = vi.fn(      (_names: ReadonlyArray<string>, options?: { loadProfile?: boolean }) =>        options?.loadProfile          ? {              PATH: "C:\\Profile\\Node;C:\\Windows\\System32",              FNM_DIR: "C:\\Users\\testuser\\AppData\\Roaming\\fnm",              FNM_MULTISHELL_PATH: "C:\\Users\\testuser\\AppData\\Local\\fnm_multishells\\123",            }          : { PATH: "C:\\Shell\\Bin;C:\\Windows\\System32" },    );    const commandAvailable = vi.fn(() => false);     expect(      resolveWindowsEnvironment(        {          PATH: "C:\\Windows\\System32",          APPDATA: "C:\\Users\\testuser\\AppData\\Roaming",          LOCALAPPDATA: "C:\\Users\\testuser\\AppData\\Local",          USERPROFILE: "C:\\Users\\testuser",        },        {          readEnvironment,          commandAvailable,        },      ),    ).toEqual({      PATH: [        "C:\\Profile\\Node",        "C:\\Windows\\System32",        "C:\\Users\\testuser\\AppData\\Roaming\\npm",        "C:\\Users\\testuser\\AppData\\Local\\Programs\\nodejs",        "C:\\Users\\testuser\\AppData\\Local\\Volta\\bin",        "C:\\Users\\testuser\\AppData\\Local\\pnpm",        "C:\\Users\\testuser\\.bun\\bin",        "C:\\Users\\testuser\\scoop\\shims",        "C:\\Shell\\Bin",      ].join(";"),      FNM_DIR: "C:\\Users\\testuser\\AppData\\Roaming\\fnm",      FNM_MULTISHELL_PATH: "C:\\Users\\testuser\\AppData\\Local\\fnm_multishells\\123",    });    expect(readEnvironment).toHaveBeenNthCalledWith(1, ["PATH"], { loadProfile: false });    expect(readEnvironment).toHaveBeenNthCalledWith(2, ["PATH", "FNM_DIR", "FNM_MULTISHELL_PATH"], {      loadProfile: true,    });    expect(commandAvailable).toHaveBeenCalledTimes(1);  });   it("keeps the baseline env when profiled probe still does not resolve node", () => {    const readEnvironment = vi.fn(      (_names: ReadonlyArray<string>, options?: { loadProfile?: boolean }) =>        options?.loadProfile ? { FNM_DIR: "C:\\Users\\testuser\\AppData\\Roaming\\fnm" } : {},    );    const commandAvailable = vi.fn(() => false);     expect(      resolveWindowsEnvironment(        {          PATH: "C:\\Windows\\System32",          APPDATA: "C:\\Users\\testuser\\AppData\\Roaming",          USERPROFILE: "C:\\Users\\testuser",        },        {          readEnvironment,          commandAvailable,        },      ),    ).toEqual({      PATH: [        "C:\\Users\\testuser\\AppData\\Roaming\\npm",        "C:\\Users\\testuser\\.bun\\bin",        "C:\\Users\\testuser\\scoop\\shims",        "C:\\Windows\\System32",      ].join(";"),      FNM_DIR: "C:\\Users\\testuser\\AppData\\Roaming\\fnm",    });    expect(commandAvailable).toHaveBeenCalledTimes(1);  });});