test: add gc exposure flag to sqlite backup test

Author: mcollina

AGENTS.md

@@ -0,0 +1,29 @@
+# AGENTS.md
+
+Non-discoverable rules for the Node.js codebase.
+
+## Landmines
+
+- `make test-only` must run from the working directory where local changes are applied, not a separate clone.
+- `make lint` is comprehensive: JS, C++, Markdown, YAML, doc, addon-doc, and shell scripts.
+- CI lint (`lint-ci`) adds Python linting, which requires `make lint-py-build` first.
+
+## Commands
+
+- `make lint` — full local lint check
+- `make lint-js-fix` — auto-fix JS lint errors
+- `make test-only` — run tests only (no rebuild)
+- `make -j4 test` — full check including documentation tests
+
+## Rules
+
+- PRs go to upstream `main`.
+- Commit messages use Node.js format: `subsystem: description`
+
+## Discoverable in code/config
+
+- `BUILDING.md` — prerequisites and build instructions
+- `CONTRIBUTING.md` — contribution workflow
+- `doc/contributing/pull-requests.md` — PR process
+- `GOVERNANCE.md` — project governance
+- `Makefile` — all build/test/lint targets

test/parallel/test-sqlite-backup.mjs

@@ -341,10 +341,10 @@ test('source database is kept alive while a backup is in flight', async (t) => {
   // Nudge the GC aggressively, but the backup must keep the source alive
   // regardless. Without the fix, the source DatabaseSync would be collected
   // and BackupJob::Finalize() would crash the process.
-    for (let i = 0; i < 5; i++) {
-      global.gc();
-      await new Promise((resolve) => setImmediate(resolve));
-    }
+  for (let i = 0; i < 5; i++) {
+    global.gc();
+    await new Promise((resolve) => setImmediate(resolve));
+  }
 
   const totalPages = await p;
   t.assert.ok(totalPages > 0);