move node test suite into its own grunt command

tests/node/index.mjs

@@ -0,0 +1,47 @@
+/* eslint no-console: 0 */
+
+/**
+ * Node API Test Runner
+ *
+ * @author d98762625 [d98762625@gmail.com]
+ * @author tlwr [toby@toby.codes]
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ */
+import "babel-polyfill";
+
+import {
+    setLongTestFailure,
+    logTestReport,
+} from "../lib/utils";
+
+// Define global environment functions
+global.ENVIRONMENT_IS_WORKER = function() {
+    return typeof importScripts === "function";
+};
+global.ENVIRONMENT_IS_NODE = function() {
+    return typeof process === "object" && typeof require === "function";
+};
+global.ENVIRONMENT_IS_WEB = function() {
+    return typeof window === "object";
+};
+
+import TestRegister from "../lib/TestRegister";
+import "./tests/nodeApi";
+import "./tests/ops";
+
+const testStatus = {
+    allTestsPassing: true,
+    counts: {
+        total: 0,
+    }
+};
+
+setLongTestFailure();
+
+const logOpsTestReport = logTestReport.bind(null, testStatus);
+
+TestRegister.runApiTests()
+    .then(logOpsTestReport);
+