Files
orca/src/shared/setup-script-shebang.test.ts
T
OrcaWinandOrcaWin ed7849eb7b fix(worktrees): stop silently switching existing Windows setup scripts to Git Bash (#12406)
* fix(worktrees): stop silently switching existing Windows setup scripts to Git Bash

#6967 derived the Windows setup-runner shell from `terminalWindowsShell`. On
upgrade, any Windows user whose terminal preference resolved to Git Bash had
their existing `orca.yaml` setup script (and issue command) handed to bash
instead of cmd.exe. Scripts authored against the cmd runner — `copy`, `xcopy`,
`set VAR=value`, `if errorlevel 1`, `%VAR%`, backslash paths — broke with no
migration and no warning, and the failure looked like Orca broke the project.

The conflation is also wrong in the steady state: a terminal preference is
per-user, so two people on the same repo got different interpreters for the
same orca.yaml and no project could write a setup script that worked for all
of its Windows contributors.

The interpreter is now a property of the script, declared the standard way:
a leading `#!` line. Native Windows keeps the historical `.cmd` runner unless
the script declares a POSIX shell, so no existing script changes behavior.
`resolveSetupRunnerShell` keeps its role as the feasibility gate — a bash
runner still requires the terminal to resolve to Git Bash, since the launch
command is typed into that shell and uses MSYS `/c/...` paths.

`buildWindowsRunnerScript` now drops a leading `#!` line rather than `call`ing
it, so a declared-bash script that falls back to cmd (Git Bash missing) fails
on a real setup line instead of aborting on errorlevel at line one.

WSL worktrees, POSIX platforms, and SSH hosts are untouched.

* fix(worktrees): keep the cmd setup runner launchable from a Git Bash pane

Adversarial review of this PR found that pinning the runner format per script
reopened issue #6896 one layer down.

- `WorktreeSetupLaunch.shell` had been redefined to mean "the format the runner
  file was written in". `resolveSetupRunnerCommand` consumes it as "the shell
  that types the launch command", so a Git Bash terminal with a batch setup
  script produced `cmd.exe /c "C:\...\setup-runner.cmd"` typed into a bash pane,
  where MSYS rewrites the `/c` switch into a drive path: cmd opens interactively
  and setup never runs. `shell` is the terminal's family again; the runner file's
  .cmd/.sh extension carries the format, and a batch runner launched from a POSIX
  pane reuses the existing PowerShell ProcessStartInfo launcher.
- The cmd runner dropped a leading `#!` line and ran the rest as batch, so a bash
  script reaching cmd (PowerShell/cmd terminal, or any SSH-to-Windows host) got
  its interpreter-agnostic prefix executed before failing mid-way. It now prints
  why and exits 1 without running anything.
- A `#!` line's option flags were discarded: `#!/usr/bin/env -S bash -euo
  pipefail` lost pipefail because the runner is launched as `bash <path>`. The
  generated posix runner now replays declared flags via `set` and drops the
  duplicate interpreter line.
- Docs cover the per-user setup command in repository hook settings, which goes
  through the same `#!` rule, and describe what the `#!` line does and does not
  select.

Tests: composed launch command for a POSIX pane + cmd runner (hooks, shared
runner command, setup sequencing gate, observed-setup signal), the cmd runner's
shebang refusal, and shebang flag replay. Each fails with the source reverted.

* fix(worktrees): replay only real `set` flags and keep the gate in the pane's shell

Two round-2 review findings:

- `#!/bin/bash -l` replayed `set -l`, which exits 2 and aborted the runner under
  its own `set -e` before a single setup line ran (all platforms). Only the flags
  `set` documents are replayed now; a bare `-o` with no option name is dropped
  instead of dumping the shell-option table.
- The wait-for-setup gate picked its language from the runner file, so a batch
  runner launched from a Git Bash pane got the PowerShell gate while the agent
  startup command was already POSIX-quoted — `Invoke-Expression` cannot parse
  `'\''`. The gate now follows the pane; the runner still launches through the
  ProcessStartInfo launcher, never through bash.

---------

Co-authored-by: OrcaWin <293788423+OrcaWin@users.noreply.github.com>
2026-08-03 23:25:50 -07:00

100 lines
4.5 KiB
TypeScript

import { describe, it, expect } from 'vitest'
import {
isShebangLine,
parseSetupScriptShebang,
scriptDeclaresPosixShell,
stripLeadingShebangLine
} from './setup-script-shebang'
describe('scriptDeclaresPosixShell', () => {
it('accepts the common env and absolute-path forms', () => {
expect(scriptDeclaresPosixShell('#!/usr/bin/env bash\npnpm install')).toBe(true)
expect(scriptDeclaresPosixShell('#!/bin/sh -e\npnpm install')).toBe(true)
expect(scriptDeclaresPosixShell('#!/usr/bin/env -S bash -euo pipefail\npnpm install')).toBe(
true
)
expect(scriptDeclaresPosixShell('#!/bin/zsh')).toBe(true)
})
it('rejects scripts with no interpreter line', () => {
// Regression: batch-syntax setup scripts must stay on the cmd runner.
expect(scriptDeclaresPosixShell('copy .env.example .env\nxcopy /E assets dist')).toBe(false)
expect(scriptDeclaresPosixShell('')).toBe(false)
expect(scriptDeclaresPosixShell('pnpm install\n#!/usr/bin/env bash')).toBe(false)
expect(scriptDeclaresPosixShell('# !/usr/bin/env bash\npnpm install')).toBe(false)
})
it('rejects interpreters that are not POSIX shells', () => {
expect(scriptDeclaresPosixShell('#!/usr/bin/env node\nconsole.log(1)')).toBe(false)
expect(scriptDeclaresPosixShell('#!/usr/bin/env python3\nprint(1)')).toBe(false)
})
it('tolerates CRLF and Windows-style interpreter paths', () => {
expect(scriptDeclaresPosixShell('#!/usr/bin/env bash\r\npnpm install')).toBe(true)
expect(scriptDeclaresPosixShell('#!C:\\tools\\git\\bin\\bash.exe\r\npnpm install')).toBe(true)
})
})
describe('parseSetupScriptShebang', () => {
it('keeps the interpreter flags a script declares', () => {
// Regression: the runner is launched as `bash <path>`, so flags survive only if they are
// parsed out here and replayed with `set` — otherwise `pipefail` is silently lost.
expect(parseSetupScriptShebang('#!/usr/bin/env -S bash -euo pipefail\nmake')).toEqual({
interpreter: 'bash',
shellOptions: ['-euo', 'pipefail']
})
expect(parseSetupScriptShebang('#!/bin/bash -e -x\nmake')).toEqual({
interpreter: 'bash',
shellOptions: ['-e', '-x']
})
expect(parseSetupScriptShebang('#!/bin/sh\nmake')).toEqual({
interpreter: 'sh',
shellOptions: []
})
})
it('ignores interpreter arguments that `set` cannot apply', () => {
// Regression: `set` rejects invocation-only flags with exit 2, and the runner's `set -e`
// turns that into an aborted setup before its first line runs.
expect(parseSetupScriptShebang('#!/bin/bash --norc\nmake')?.shellOptions).toEqual([])
expect(parseSetupScriptShebang('#!/bin/bash -l\nmake')?.shellOptions).toEqual([])
expect(parseSetupScriptShebang('#!/bin/bash -s\nmake')?.shellOptions).toEqual([])
expect(parseSetupScriptShebang('#!/bin/bash -i\nmake')?.shellOptions).toEqual([])
// Why: `-r` is accepted by `set` on some shells but silently restricts the rest of setup.
expect(parseSetupScriptShebang('#!/bin/bash -r\nmake')?.shellOptions).toEqual([])
expect(parseSetupScriptShebang('#!/bin/bash -ex -l\nmake')?.shellOptions).toEqual(['-ex'])
// Why: a bare `-o` would print the whole shell-option table into the setup terminal.
expect(parseSetupScriptShebang('#!/bin/bash -o\nmake')?.shellOptions).toEqual([])
expect(parseSetupScriptShebang('#!/bin/bash -euo\nmake')?.shellOptions).toEqual([])
expect(parseSetupScriptShebang('#!/bin/bash +o posix\nmake')?.shellOptions).toEqual([
'+o',
'posix'
])
})
it('returns null without an interpreter line', () => {
expect(parseSetupScriptShebang('pnpm install')).toBeNull()
expect(parseSetupScriptShebang('#!/usr/bin/env')).toBeNull()
})
})
describe('stripLeadingShebangLine', () => {
it('removes only a leading interpreter line', () => {
expect(stripLeadingShebangLine('#!/usr/bin/env bash\npnpm install\n')).toBe('pnpm install\n')
expect(stripLeadingShebangLine('#!/usr/bin/env bash\r\npnpm install')).toBe('pnpm install')
expect(stripLeadingShebangLine('pnpm install\n#!/usr/bin/env bash')).toBe(
'pnpm install\n#!/usr/bin/env bash'
)
expect(stripLeadingShebangLine('#!/usr/bin/env bash')).toBe('')
})
})
describe('isShebangLine', () => {
it('detects interpreter lines regardless of leading whitespace', () => {
expect(isShebangLine('#!/usr/bin/env bash')).toBe(true)
expect(isShebangLine(' #!/bin/sh')).toBe(true)
expect(isShebangLine('#comment')).toBe(false)
expect(isShebangLine('pnpm install')).toBe(false)
})
})