Add test-vm-timeout-escape-promise.js

test/js/node/test/parallel/test-vm-timeout-escape-promise.js

@@ -0,0 +1,39 @@
+'use strict';
+
+// https://github.com/nodejs/node/issues/3020
+// Promises used to allow code to escape the timeout
+// set for runInContext, runInNewContext, and runInThisContext.
+
+require('../common');
+const assert = require('assert');
+const vm = require('vm');
+
+const NS_PER_MS = 1000000n;
+
+const hrtime = process.hrtime.bigint;
+
+function loop() {
+  const start = hrtime();
+  while (1) {
+    const current = hrtime();
+    const span = (current - start) / NS_PER_MS;
+    if (span >= 2000n) {
+      throw new Error(
+        `escaped timeout at ${span} milliseconds!`);
+    }
+  }
+}
+
+assert.throws(() => {
+  vm.runInNewContext(
+    'Promise.resolve().then(() => loop()); loop();',
+    {
+      hrtime,
+      loop
+    },
+    { timeout: 5, microtaskMode: 'afterEvaluate' }
+  );
+}, {
+  code: 'ERR_SCRIPT_EXECUTION_TIMEOUT',
+  message: 'Script execution timed out after 5ms'
+});