feat: initial commit for git-worktree plugin

test/worktree.test.mjs

@@ -0,0 +1,63 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import fs from 'node:fs'
+import path from 'node:path'
+import os from 'node:os'
+import {
+  parseWorktreePorcelain,
+  gitExec,
+  getGitRoot,
+} from '../index.js'
+
+test('parseWorktreePorcelain parses git porcelain worktree format', () => {
+  const sample = `worktree /home/user/project
+HEAD 1234567890abcdef
+branch refs/heads/main
+
+worktree /home/user/project/.worktrees/feature-a
+HEAD fedcba0987654321
+branch refs/heads/feature-a
+
+worktree /home/user/project/.worktrees/detached-run
+HEAD aaaaaaa000000000
+detached
+`
+  const res = parseWorktreePorcelain(sample)
+  assert.equal(res.length, 3)
+  assert.equal(res[0].path, '/home/user/project')
+  assert.equal(res[0].branch, 'main')
+  assert.equal(res[0].commit, '1234567890abcdef')
+  assert.equal(res[1].branch, 'feature-a')
+  assert.equal(res[2].detached, true)
+})
+
+test('gitExec and getGitRoot inside real git repo', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'git-wt-test-'))
+  await gitExec(tmp, ['init', '-b', 'main'])
+  await gitExec(tmp, ['config', 'user.name', 'Test Agent'])
+  await gitExec(tmp, ['config', 'user.email', 'test@example.com'])
+  fs.writeFileSync(path.join(tmp, 'hello.txt'), 'hello world')
+  await gitExec(tmp, ['add', 'hello.txt'])
+  await gitExec(tmp, ['commit', '-m', 'initial commit'])
+
+  const root = await getGitRoot(tmp)
+  // Resolve symlinks if any on temporary dirs
+  assert.equal(fs.realpathSync(root), fs.realpathSync(tmp))
+
+  // Create worktree
+  const wtDir = path.join(tmp, '.worktrees', 'test-wt')
+  const addRes = await gitExec(tmp, ['worktree', 'add', '-b', 'feature-test', wtDir])
+  assert.equal(addRes.code, 0)
+
+  // Verify list
+  const listRes = await gitExec(tmp, ['worktree', 'list', '--porcelain'])
+  const parsed = parseWorktreePorcelain(listRes.stdout)
+  assert.equal(parsed.length, 2)
+  assert.ok(parsed.some((w) => w.branch === 'feature-test'))
+
+  // Remove worktree
+  const rmRes = await gitExec(tmp, ['worktree', 'remove', wtDir])
+  assert.equal(rmRes.code, 0)
+
+  fs.rmSync(tmp, { recursive: true, force: true })
+})