test(dsh): --check stays offline and reports the git sha (#67)

dsh/tests/install.test.mjs

@@ -463,3 +463,32 @@ test('a manual non-git checkout is used but not updated', () => {
     cleanup(home)
   }
 })
+
+test('--check reports the git sha of the managed checkout', () => {
+  const home = tempDir()
+  try {
+    const repo = makeSuperpowersRepo(home)
+    const sha = git(repo, ['rev-parse', '--short', 'HEAD'])
+    assert.equal(runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_REPO: gitUrl(repo) }).status, 0)
+    const run = runInstaller(home, ['--check'])
+    const out = run.stdout + run.stderr
+    assert.equal(run.status, 0, out)
+    assert.match(out, new RegExp(`ok: superpowers source \\(.*superpowers/skills, git ${sha}\\)`))
+  } finally {
+    cleanup(home)
+  }
+})
+
+test('--check never clones on an empty HOME', () => {
+  const home = tempDir()
+  try {
+    const repo = makeSuperpowersRepo(home)
+    const run = runInstaller(home, ['--check'], { DSH_SUPERPOWERS_REPO: gitUrl(repo) })
+    const out = run.stdout + run.stderr
+    assert.equal(run.status, 0, out)
+    assert.equal(existsSync(join(home, '.dsh', 'superpowers')), false, '--check must not clone')
+    assert.match(out, /WARN: no superpowers source/)
+  } finally {
+    cleanup(home)
+  }
+})