Issue 5175 - Reject element hiding filter with empty domain names

test/filterClasses.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 456 matching lines @@
   {
     filter.hitCount = 0;
   }, ["filter.hitCount", "foobar"], "Resetting filter hit counts");
 
   filter.delete();
   test.done();
 };
 
 exports.testEmptyElemHideDomains = function(test)
 {
-  let emptyDomainFilters = [
-    ",##selector", ",,,##selector", "~,foo.com##selector", "foo.com,##selector",
-    ",foo.com##selector", "foo.com,~##selector",
-    "foo.com,,bar.com##selector", "foo.com,~,bar.com##selector"
-  ];
-
-  for (let filterText of emptyDomainFilters)
-  {
-    let filter = Filter.fromText(filterText);
-    test.ok(filter instanceof InvalidFilter);
-    test.equal(filter.reason, "filter_invalid_domain");
-    filter.delete();
-  }
-
-  test.done();
-};
+  [",##selector", ",,,##selector", "~,foo.com##selector", "foo.com,##selector",
+   ",foo.com##selector", "foo.com,~##selector",
+   "foo.com,,bar.com##selector", "foo.com,~,bar.com##selector"]
+    .map(filterText => Filter.fromText(filterText))
+    .forEach(withNAD(0, filter =>
+    {
+      test.ok(filter instanceof InvalidFilter);
+      test.equal(filter.reason, "filter_invalid_domain");
+    }));
+
+  test.done();
+};