JS: Add test

Author: asgerf

javascript/ql/test/library-tests/TaintTracking/object-bypass-sanitizer.js

@@ -0,0 +1,14 @@
+import * as dummy from 'dummy';
+
+function f(x) {
+    if (isSafe(x)) {
+        sink(x);
+        sink(x.foo); // NOT OK
+    }
+}
+
+function g() {
+    f(source()); // OK
+    f(null);
+    f({foo: source()}); // NOT OK
+}