Function runRollbackSequence

test/gbrain-init-rollback.test.ts:102–130

* Verbatim reimplementation of the skill template's Step 1.5 / 4.5 rollback * sequence. The skill instructs the model to execute this bash; we execute * the same bash here in a sandboxed environment and assert the contract. * * If gbrain templates rewrite this sequence, this test should fail unt

(env: RollbackEnv)

 * skill template aligned.
 */
function runRollbackSequence(env: RollbackEnv): { exitCode: number; stderr: string } {
  const script = `
set -u
BACKUP="${env.configPath}.gstack-bak-$(date +%s)-$$"
if [ -f "${env.configPath}" ]; then
  mv "${env.configPath}" "$BACKUP"
fi
if ! gbrain init --pglite --json; then
  if [ -n "\${BACKUP:-}" ] && [ -f "$BACKUP" ]; then
    mv "$BACKUP" "${env.configPath}"
  fi
  echo "gbrain init failed. Existing config (if any) was restored." >&2
  exit 1
fi
echo "ok"
`;
  const result = spawnSync("bash", ["-c", script], {
    encoding: "utf-8",
    env: {
      ...process.env,
      HOME: env.home,
      PATH: `${env.bindir}:/usr/bin:/bin`,
    },
  });
  return {
    exitCode: result.status ?? 1,
    stderr: result.stderr || "",
  };
}

describe("Step 1.5 / 4.5 .bak-rollback contract (plan D7)", () => {
  it("FAILURE PATH: when `gbrain init` fails, broken config is restored to original path", () => {