Set up tests

package.json

@@ -4,7 +4,7 @@
   "description": "WIP support for WHATWG Stream in Node",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "node --expose-internals --expose_gc test/wpt/test.js"
   },
   "repository": {
     "type": "git",
@@ -16,6 +16,9 @@
     "url": "https://github.com/nodejs/whatwg-stream/issues"
   },
   "homepage": "https://github.com/nodejs/whatwg-stream#readme",
+  "engines": {
+    "node": ">= 15"
+  },
   "dependencies": {
     "web-streams-polyfill": "^3.0.2"
   }

test/wpt/status/streams.json

@@ -0,0 +1,14 @@
+{
+  "piping/pipe-through.any.js": {
+    "fail": "Node does not perform a brand check for AbortSignal.prototype.aborted"
+  },
+  "queuing-strategies-size-function-per-global.window.js": {
+    "skip": "test requires an <iframe>"
+  },
+  "readable-byte-streams/bad-buffers-and-views.any.js": {
+    "skip": "Node does not have detached ArrayBuffers"
+  },
+  "transferable/deserialize-error.window.js": {
+    "skip": "test requires an <iframe>"
+  }
+}

test/wpt/test.js

@@ -0,0 +1,30 @@
+'use strict';
+
+// Flags: --expose-internals --expose_gc
+// Note:
+// - The --expose-internals flag is specific to Node.js core's
+//   internal error system and is unnecessary for external users.
+// - The --expose_gc flag is specific to the WPT stream tests
+
+const { WPTRunner } = require('../common/wpt');
+const runner = new WPTRunner('streams');
+const whatwgStreamPath = require.resolve('../../');
+
+runner.setFlags(['--expose-internals']);
+
+runner.setInitScript(`
+  const { internalBinding } = require('internal/test/binding');
+  const { DOMException } = internalBinding('messaging');
+  global.DOMException = DOMException;
+  
+  const whatwgStream = require(${JSON.stringify(whatwgStreamPath)});
+  for (const [name, value] of Object.entries(whatwgStream)) {
+    Object.defineProperty(global, name, {
+      value,
+      writable: true,
+      configurable: true
+    });
+  }
+`);
+
+runner.runJsTests();