gstack/test/gstack-slug-cwd-walk-up.tes...

312 lines
14 KiB
TypeScript

/**
* Regression test — bin/gstack-slug must resolve to the OUTERMOST project root
* along the cwd ancestor chain, not to a subdirectory that happens to contain
* a build/deploy marker.
*
* The bug this prevents (2026-05-25):
* `bin/gstack-slug` derived its slug from the literal `pwd` with no walk-up.
* When a session's cwd landed inside a subdir that had its own project-like
* marker (e.g. `.vercel/` dropped by `vercel --prod`, or a vendored `package.json`),
* the slug resolved to the subdir's basename — silently misfiling checkpoints,
* autosave state, and operational learnings under a phantom slug like `site`
* instead of the real project's slug like `loadout`.
*
* The fix walks up from `pwd` looking for canonical project-identity markers
* (`.git`, `.project.yaml`, `package.json`, `pyproject.toml`, `Cargo.toml`,
* `Gemfile`, `go.mod`) and takes the OUTERMOST match. Build/deploy artifacts
* (`.vercel`, `.next`, `dist`, `node_modules`, etc.) are NOT in the allow-list,
* so they cannot establish a phantom project root.
*
* Caching is self-healing: a stale cache entry for the literal pwd gets
* overwritten with the freshly-computed correct slug on the next invocation
* (no manual `rm -rf ~/.gstack/slug-cache/` required).
*
* Test pattern mirrors `test/migration-checkpoint-ownership.test.ts`:
* per-test `tmpHome`, `spawnSync` against the real bash script with the
* tmpHome injected as `HOME`, fixtures built on disk.
*/
import { describe, test, expect, beforeEach, afterEach } from 'bun:test';
import { spawnSync, type SpawnSyncReturns } from 'child_process';
import * as fs from 'fs';
import * as path from 'path';
import * as os from 'os';
const ROOT = path.resolve(import.meta.dir, '..');
const SCRIPT = path.join(ROOT, 'bin', 'gstack-slug');
function runSlug(
cwd: string,
tmpHome: string,
extraEnv: Record<string, string> = {},
): SpawnSyncReturns<string> {
// Scrub PATH so we always use system bash + system git; pass HOME so the
// script's cache writes land in tmpHome, never AJ's real ~/.gstack.
const env = { ...process.env, HOME: tmpHome, ...extraEnv };
return spawnSync('bash', [SCRIPT], {
cwd,
env,
encoding: 'utf8',
timeout: 10_000,
});
}
function parseSlug(stdout: string): { slug: string; branch: string } {
const slugMatch = stdout.match(/^SLUG=([^\n]*)$/m);
const branchMatch = stdout.match(/^BRANCH=([^\n]*)$/m);
return {
slug: slugMatch ? slugMatch[1]! : '',
branch: branchMatch ? branchMatch[1]! : '',
};
}
function encodedCacheKey(absPath: string): string {
return absPath.replace(/\//g, '_');
}
describe('gstack-slug — outermost project-root resolution', () => {
let tmpHome: string;
let projectsRoot: string;
beforeEach(() => {
// realpathSync canonicalizes /var/folders/... -> /private/var/folders/... on
// macOS so that the cache key our test computes matches the cache key the
// bash script computes from `$(pwd)`. Without this the script writes to
// _private_var_folders_... and the test sees _var_folders_... (silent mismatch).
tmpHome = fs.realpathSync(fs.mkdtempSync(path.join(os.tmpdir(), 'gstack-slug-test-')));
projectsRoot = fs.realpathSync(fs.mkdtempSync(path.join(os.tmpdir(), 'gstack-slug-projects-')));
});
afterEach(() => {
try { fs.rmSync(tmpHome, { recursive: true, force: true }); } catch {}
try { fs.rmSync(projectsRoot, { recursive: true, force: true }); } catch {}
});
// AC-1: the canonical loadout/site/.vercel reproduction.
test('AC-1: .git at root, .vercel in subdir — slug from subdir resolves to ROOT basename', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const siteSubdir = path.join(projectRoot, 'site');
fs.mkdirSync(path.join(projectRoot, '.git'), { recursive: true });
fs.mkdirSync(path.join(siteSubdir, '.vercel'), { recursive: true });
fs.writeFileSync(path.join(siteSubdir, '.vercel', 'project.json'), '{}\n');
const result = runSlug(siteSubdir, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('loadout');
expect(slug).not.toBe('site');
});
// AC-1 variant: package.json at root, node_modules-only in subdir.
test('AC-1 variant: package.json at root, node_modules-only subdir — slug = ROOT basename', () => {
const projectRoot = path.join(projectsRoot, 'monorepo');
const subdir = path.join(projectRoot, 'packages', 'web');
fs.mkdirSync(subdir, { recursive: true });
fs.writeFileSync(path.join(projectRoot, 'package.json'), '{}\n');
fs.mkdirSync(path.join(subdir, 'node_modules'), { recursive: true });
const result = runSlug(subdir, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('monorepo');
});
// AC-2: stale cache for the subdir's pwd gets self-healed.
test('AC-2: stale cache for subdir pwd is overwritten with correct outermost-root slug', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const siteSubdir = path.join(projectRoot, 'site');
fs.mkdirSync(path.join(projectRoot, '.git'), { recursive: true });
fs.mkdirSync(path.join(siteSubdir, '.vercel'), { recursive: true });
fs.writeFileSync(path.join(siteSubdir, '.vercel', 'project.json'), '{}\n');
// Pre-seed the cache with the WRONG value (simulating pre-fix poisoning).
const cacheDir = path.join(tmpHome, '.gstack', 'slug-cache');
fs.mkdirSync(cacheDir, { recursive: true });
const cacheKey = encodedCacheKey(siteSubdir);
const cacheFile = path.join(cacheDir, cacheKey);
fs.writeFileSync(cacheFile, 'site');
const result = runSlug(siteSubdir, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('loadout');
// The cache file itself must have been overwritten (self-healing).
const cachedAfter = fs.readFileSync(cacheFile, 'utf8').trim();
expect(cachedAfter).toBe('loadout');
});
// AC-3: no regression — cwd IS the project root.
test('AC-3: cwd is the project root with .git — slug = basename, no change in behavior', () => {
const projectRoot = path.join(projectsRoot, 'myproject');
fs.mkdirSync(path.join(projectRoot, '.git'), { recursive: true });
const result = runSlug(projectRoot, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('myproject');
});
// AC-4: no regression — no markers anywhere on the cwd ancestor chain.
test('AC-4: no project markers anywhere on cwd chain — slug = pwd basename (fallback)', () => {
// projectsRoot itself is just a tmp dir with no markers; create a deeper
// path inside it that also has no markers anywhere up to it.
const deep = path.join(projectsRoot, 'just', 'a', 'plain', 'folder');
fs.mkdirSync(deep, { recursive: true });
const result = runSlug(deep, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('folder');
});
// AC-5: no regression — real git remote takes precedence (slug from remote URL).
test('AC-5: project root has a real git remote — slug derived from remote URL', () => {
const projectRoot = path.join(projectsRoot, 'realgit');
fs.mkdirSync(projectRoot, { recursive: true });
// Initialize a real git repo with an origin remote so `git remote get-url`
// succeeds. (The script's step 2 reads the remote when there's no cache.)
const gitInit = spawnSync('git', ['init', '-q', '-b', 'main', projectRoot], {
encoding: 'utf8',
});
expect(gitInit.status).toBe(0);
const gitRemote = spawnSync(
'git',
['-C', projectRoot, 'remote', 'add', 'origin', 'https://github.com/foo/bar.git'],
{ encoding: 'utf8' },
);
expect(gitRemote.status).toBe(0);
const result = runSlug(projectRoot, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
// Existing sed-based regex extracts "foo/bar" → "foo-bar" after tr '/' '-'.
expect(slug).toBe('foo-bar');
});
// AC-6: cache eviction is single-shot — does NOT touch other cache entries.
test('AC-6: cache eviction only rewrites the literal-pwd key, not other entries', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const siteSubdir = path.join(projectRoot, 'site');
fs.mkdirSync(path.join(projectRoot, '.git'), { recursive: true });
fs.mkdirSync(path.join(siteSubdir, '.vercel'), { recursive: true });
fs.writeFileSync(path.join(siteSubdir, '.vercel', 'project.json'), '{}\n');
const cacheDir = path.join(tmpHome, '.gstack', 'slug-cache');
fs.mkdirSync(cacheDir, { recursive: true });
// Seed the literal pwd key with the wrong value (will be evicted).
const targetKey = encodedCacheKey(siteSubdir);
fs.writeFileSync(path.join(cacheDir, targetKey), 'site');
// Seed an UNRELATED cache entry — must remain untouched.
const unrelatedKey = '_Users_someone_unrelated_project';
const unrelatedFile = path.join(cacheDir, unrelatedKey);
fs.writeFileSync(unrelatedFile, 'unrelated-value-must-survive');
const result = runSlug(siteSubdir, tmpHome);
expect(result.status).toBe(0);
// Target key got self-healed.
expect(fs.readFileSync(path.join(cacheDir, targetKey), 'utf8').trim()).toBe('loadout');
// Unrelated key is untouched.
expect(fs.readFileSync(unrelatedFile, 'utf8').trim()).toBe('unrelated-value-must-survive');
});
// AC-7: output contract is preserved exactly.
test('AC-7: stdout shape is `SLUG=<safe>\\nBRANCH=<safe>\\n`, sanitized to [a-zA-Z0-9._-]', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const siteSubdir = path.join(projectRoot, 'site');
fs.mkdirSync(path.join(projectRoot, '.git'), { recursive: true });
fs.mkdirSync(path.join(siteSubdir, '.vercel'), { recursive: true });
fs.writeFileSync(path.join(siteSubdir, '.vercel', 'project.json'), '{}\n');
const result = runSlug(siteSubdir, tmpHome);
expect(result.status).toBe(0);
// Exactly two lines (with trailing newline from the last `echo`).
expect(result.stdout).toMatch(/^SLUG=[a-zA-Z0-9._-]+\nBRANCH=[a-zA-Z0-9._-]+\n$/);
});
// Weak-marker case: content-only project folder (README.md, no .git, no package.json).
// This is the AJ-loadout shape: a folder of markdown content with a README at
// the root and a deploy-artifact-only subdir. Without README as a marker, the
// walk-up would find nothing and fall back to pwd basename = subdir name.
test('weak marker: README.md at root, .vercel-only subdir — slug = ROOT basename (loadout repro)', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const siteSubdir = path.join(projectRoot, 'site');
fs.mkdirSync(siteSubdir, { recursive: true });
fs.writeFileSync(path.join(projectRoot, 'README.md'), '# loadout\n');
fs.mkdirSync(path.join(siteSubdir, '.vercel'), { recursive: true });
fs.writeFileSync(path.join(siteSubdir, '.vercel', 'project.json'), '{}\n');
const result = runSlug(siteSubdir, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('loadout');
});
// Two-tier markers: a vendored sub-repo with its own .git keeps its own slug
// even when a weak-marker (README) parent is higher up. Strong beats weak.
test('two-tier: vendored sub-repo with .git wins over parent README (strong > weak)', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const subRepo = path.join(projectRoot, 'starter-pack');
fs.mkdirSync(subRepo, { recursive: true });
fs.writeFileSync(path.join(projectRoot, 'README.md'), '# loadout\n');
fs.mkdirSync(path.join(subRepo, '.git'), { recursive: true });
const result = runSlug(subRepo, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('starter-pack');
});
// Two-tier markers: weak marker still wins when no strong marker exists
// anywhere on the chain. Confirms loadout/site/.vercel → loadout case.
test('two-tier: weak marker chain falls back correctly when no strong marker exists', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const subdir = path.join(projectRoot, 'docs');
fs.mkdirSync(subdir, { recursive: true });
fs.writeFileSync(path.join(projectRoot, 'README.md'), '# loadout\n');
fs.writeFileSync(path.join(subdir, 'README.md'), '# docs\n');
const result = runSlug(subdir, tmpHome);
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
// Outermost weak wins → loadout, not docs.
expect(slug).toBe('loadout');
});
// Edge case: GSTACK_PROJECT_SLUG env override wins over walk-up (documented escape hatch).
test('GSTACK_PROJECT_SLUG env override beats every other resolution path', () => {
const projectRoot = path.join(projectsRoot, 'loadout');
const siteSubdir = path.join(projectRoot, 'site');
fs.mkdirSync(path.join(projectRoot, '.git'), { recursive: true });
fs.mkdirSync(path.join(siteSubdir, '.vercel'), { recursive: true });
fs.writeFileSync(path.join(siteSubdir, '.vercel', 'project.json'), '{}\n');
const result = runSlug(siteSubdir, tmpHome, { GSTACK_PROJECT_SLUG: 'custom-override' });
expect(result.status).toBe(0);
const { slug } = parseSlug(result.stdout);
expect(slug).toBe('custom-override');
});
});
describe('_outermost_project_root termination (windows-free-tests regression)', () => {
// Under git-bash on Windows a mixed-form path walks C:/Users -> C: -> . -> .
// forever: dirname's fixed point there is never "/". The loop must break on
// the fixed point itself. Extract the function and drive it with hostile
// path forms under a hard timeout — a hang fails the spawn, not the suite.
const script = fs.readFileSync(path.join(ROOT, 'bin', 'gstack-slug'), 'utf-8');
const fnMatch = script.match(/_outermost_project_root\(\) \{[\s\S]*?\n\}/);
test.each(['C:/Users/nobody/project', '.', '//server/share/dir'])(
'terminates on hostile path form: %s',
(hostile) => {
expect(fnMatch).not.toBeNull();
const r = Bun.spawnSync(['bash', '-c', `${fnMatch![0]}\n_outermost_project_root "$1"; echo TERMINATED`, '_', hostile], {
timeout: 5000,
});
expect(r.stdout.toString()).toContain('TERMINATED');
},
);
});