From 0a11999459e517279b57e408bf872e3555db0f31 Mon Sep 17 00:00:00 2001
From: Manish Jethani <code@manishjethani.io>
Date: Sun, 15 Aug 2021 18:11:30 +0530
Subject: [PATCH] Test in new world (#3822)

---
 platform/nodejs/package-lock.json |  5 +++++
 platform/nodejs/package.json      |  1 +
 platform/nodejs/test.js           |  2 +-
 platform/nodejs/tests/snfe.js     | 24 +++++++++++++++---------
 4 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/platform/nodejs/package-lock.json b/platform/nodejs/package-lock.json
index d15ce11d6..2b1eeb32a 100644
--- a/platform/nodejs/package-lock.json
+++ b/platform/nodejs/package-lock.json
@@ -462,6 +462,11 @@
       "integrity": "sha512-0rSmRBzXgDzIsD6mGdJgevzgezI534Cer5L/vyMX0kHzT/jiB43jRhd9YUlMGYLQy2zprNmoT8qasCGtY+QaKw==",
       "dev": true
     },
+    "esm-world": {
+      "version": "github:mjethani/esm-world#0e5a77a5c0cb22de28616bba9ed7247dee218fb3",
+      "from": "github:mjethani/esm-world#0e5a77a5c0cb22de28616bba9ed7247dee218fb3",
+      "dev": true
+    },
     "espree": {
       "version": "7.3.1",
       "resolved": "https://registry.npmjs.org/espree/-/espree-7.3.1.tgz",
diff --git a/platform/nodejs/package.json b/platform/nodejs/package.json
index a933c4efe..4f9472876 100644
--- a/platform/nodejs/package.json
+++ b/platform/nodejs/package.json
@@ -31,6 +31,7 @@
   },
   "devDependencies": {
     "eslint": "^7.32.0",
+    "esm-world": "github:mjethani/esm-world#0e5a77a5c0cb22de28616bba9ed7247dee218fb3",
     "mocha": "^9.0.3"
   }
 }
diff --git a/platform/nodejs/test.js b/platform/nodejs/test.js
index e4a0b8331..15e3db0c4 100644
--- a/platform/nodejs/test.js
+++ b/platform/nodejs/test.js
@@ -134,7 +134,7 @@ async function doHNTrie() {
 }
 
 async function spawnMocha() {
-    await promisify(spawn)('mocha', [ 'tests' ], { stdio: [ 'inherit', 'inherit', 'inherit' ] });
+    await promisify(spawn)('mocha', [ '--experimental-vm-modules', '--no-warnings', 'tests' ], { stdio: [ 'inherit', 'inherit', 'inherit' ] });
 }
 
 async function main() {
diff --git a/platform/nodejs/tests/snfe.js b/platform/nodejs/tests/snfe.js
index fa3011124..a4b29e2cc 100644
--- a/platform/nodejs/tests/snfe.js
+++ b/platform/nodejs/tests/snfe.js
@@ -24,22 +24,28 @@
 /******************************************************************************/
 
 import { strict as assert } from 'assert';
+import process from 'process';
 
-import {
-    StaticNetFilteringEngine,
-} from '../index.js';
+import { createWorld } from 'esm-world';
+
+process.on('warning', warning => {
+    // Ignore warnings about experimental features like
+    // --experimental-vm-modules
+    if ( warning.name !== 'ExperimentalWarning' ) {
+        console.warn(warning.stack);
+    }
+});
 
 let engine = null;
 
 describe('SNFE', () => {
-    before(async () => {
-        engine = await StaticNetFilteringEngine.create();
-    });
-
     describe('Filter loading', () => {
         beforeEach(async () => {
-            // This is in lieu of a constructor for a non-singleton.
-            await engine.useLists([]);
+            const globals = { URL, setTimeout, clearTimeout };
+
+            const { StaticNetFilteringEngine } = await createWorld('./index.js', { globals });
+
+            engine = await StaticNetFilteringEngine.create();
         });
 
         it('should not reject on no lists', async () => {