harness test: fnGlobalObject.js

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

test/harness/fnGlobalObject.js

+// Copyright (C) 2017 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Including fnGlobalObject.js will expose a function:
+
+        fnGlobalObject
+
+    fnGlobalObject returns a reference to the global object.
+
+includes: [fnGlobalObject.js]
+---*/
+
+var gO = fnGlobalObject();
+
+assert(typeof gO === "object");
+assert.sameValue(gO, this);