benchmark: add throws and doesNotThrow bench

benchmark/assert/throws.js

@@ -0,0 +1,27 @@
+'use strict';
+
+const common = require('../common.js');
+const assert = require('assert');
+
+const bench = common.createBenchmark(main, {
+  n: [25, 2e5],
+  method: ['throws', 'doesNotThrow'],
+});
+
+function main({ n, method }) {
+  const fn = assert[method];
+  const shouldThrow = method === 'throws';
+
+  bench.start();
+  for (let i = 0; i < n; ++i) {
+    fn(() => {
+      const err = new Error(`assert.${method}`);
+      if (shouldThrow) {
+        throw err;
+      } else {
+        return err;
+      }
+    });
+  }
+  bench.end(n);
+}