vm: add tests for function declarations using [[DefineOwnProperty]]

Refs: #31808

PR-URL: #34032
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>

test/known_issues/test-vm-function-declaration-uses-define.js

@@ -0,0 +1,21 @@
+'use strict';
+
+// https://github.com/nodejs/node/issues/31808
+// function declarations currently call [[Set]] instead of [[DefineOwnProperty]]
+// in VM contexts, which violates the ECMA-262 specification:
+// https://tc39.es/ecma262/#sec-createglobalfunctionbinding
+
+const common = require('../common');
+const vm = require('vm');
+const assert = require('assert');
+
+const ctx = vm.createContext();
+Object.defineProperty(ctx, 'x', {
+  enumerable: true,
+  configurable: true,
+  get: common.mustNotCall('ctx.x getter must not be called'),
+  set: common.mustNotCall('ctx.x setter must not be called'),
+});
+
+vm.runInContext('function x() {}', ctx);
+assert.strictEqual(typeof ctx.x, 'function');