benchmark: add sqlite is transaction

Author: H4ad

benchmark/sqlite/sqlite-is-transaction.js

@@ -0,0 +1,33 @@
+'use strict';
+const common = require('../common.js');
+const sqlite = require('node:sqlite');
+const assert = require('assert');
+
+const bench = common.createBenchmark(main, {
+  n: [1e7],
+  transaction: ['true', 'false'],
+});
+
+function main(conf) {
+  const n = conf.n | 0;
+
+  const db = new sqlite.DatabaseSync(':memory:');
+
+  if (conf.transaction === 'true') {
+    db.exec('BEGIN');
+  }
+
+  let i;
+  let deadCodeElimination;
+
+  bench.start();
+  for (i = 0; i < n; i += 1)
+    deadCodeElimination = db.isTransaction;
+  bench.end(n);
+
+  assert.ok(deadCodeElimination === (conf.transaction === 'true'));
+
+  if (conf.transaction === 'true') {
+    db.exec('ROLLBACK');
+  }
+}