Issue 6699 - Support the "circumvention" filter list as default subscription

qunit/tests/subscriptionInit.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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+"use strict";
+
+{
+  let {chooseFilterSubscriptions} = require("../../lib/subscriptionInit");
+
+  QUnit.module("Subscription", {
+    setup()
+    {
+      let {Utils} = require("../../lib/utils");
+      Object.defineProperty(Utils, "appLocale",
+                            {value: "en", enumerable: true});
+    },
+
+    teardown()
+    {
+      // TODO restore appLocale

[Manish Jethani, 2018/06/14 05:07:34]

We don't normally leave "todo" comments in the code, from what I can tell. Is
this still a work in progress?

[hub, 2018/06/14 19:59:57]

I had forgotten to remove it, done.

+    }
+  });
+
+
+  test("Choosing filter subscriptions", assert =>
+  {
+    let done = assert.async();
+    fetch("subscriptions.xml")
+      .then(response => response.text())
+      .then(text =>
+      {
+        let doc = new DOMParser().parseFromString(text, "application/xml");
+        let nodes = doc.getElementsByTagName("subscription");
+
+        let subs = chooseFilterSubscriptions(nodes);
+        assert.ok(subs);
+        assert.ok(subs.circumvention);
+        assert.ok(subs.ads);
+
+        assert.equal(subs.circumvention.getAttribute("prefixes"), "en");
+        assert.equal(subs.circumvention.getAttribute("type"), "circumvention");
+        assert.equal(subs.ads.getAttribute("prefixes"), "en");
+        assert.equal(subs.ads.getAttribute("type"), "ads");
+
+        done();
+      })
+      .catch(() =>
+      {
+        assert.ok(false);
+
+        done();
+      });
+  });
+}