Issue 7094 - Encapsulate management of subscription filters

test/subscriptionClasses.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";
 
 const {createSandbox} = require("./_common");
 
+let f$ = null;
+
 let Subscription = null;
 let SpecialSubscription = null;
 let DownloadableSubscription = null;
 let RegularSubscription = null;
 let ExternalSubscription = null;
+let Filter = null;
 
 exports.setUp = function(callback)
 {
   let sandboxedRequire = createSandbox();
   (
     {Subscription, SpecialSubscription,
      DownloadableSubscription, RegularSubscription,
-     ExternalSubscription} = sandboxedRequire("../lib/subscriptionClasses")
-  );
+     ExternalSubscription} = sandboxedRequire("../lib/subscriptionClasses"),
+    {Filter} = sandboxedRequire("../lib/filterClasses")
+  );
+
+  f$ = Filter.fromText;
 
   callback();
 };
 
 function compareSubscription(test, url, expected, postInit)
 {
   expected.push("[Subscription]");
   let subscription = Subscription.fromURL(url);
   if (postInit)
     postInit(subscription);
   let result = [...subscription.serialize()];
   test.equal(result.sort().join("\n"), expected.sort().join("\n"), url);
 
   let map = Object.create(null);
   for (let line of result.slice(1))
   {
     if (/(.*?)=(.*)/.test(line))
       map[RegExp.$1] = RegExp.$2;
   }
   let subscription2 = Subscription.fromObject(map);
   test.equal(subscription.toString(), subscription2.toString(), url + " deserialization");
+}
+
+function compareSubscriptionFilters(test, subscription, expected)
+{
+  test.deepEqual([...subscription.filterText()], expected);
+  test.deepEqual([...subscription.filters()], expected.map(f$));
+
+  test.equal(subscription.filterCount, expected.length);
+
+  for (let i = 0; i < subscription.filterCount; i++)
+    test.equal(subscription.filterAt(i).text, expected[i]);
+
+  test.ok(!subscription.filterAt(subscription.filterCount));
+  test.ok(!subscription.filterAt(-1));
 }
 
 exports.testSubscriptionClassDefinitions = function(test)
 {
   test.equal(typeof Subscription, "function", "typeof Subscription");
   test.equal(typeof SpecialSubscription, "function", "typeof SpecialSubscription");
   test.equal(typeof RegularSubscription, "function", "typeof RegularSubscription");
   test.equal(typeof ExternalSubscription, "function", "typeof ExternalSubscription");
   test.equal(typeof DownloadableSubscription, "function", "typeof DownloadableSubscription");
 
@@ skipping 39 matching lines @@
     test, "~wl~", ["url=~wl~", "disabled=true", "title=Test group"],
     subscription =>
     {
       subscription.title = "Test group";
       subscription.disabled = true;
     }
   );
 
   test.done();
 };
+
+exports.testFilterManagement = function(test)
+{
+  let subscription = Subscription.fromURL("https://example.com/");
+
+  compareSubscriptionFilters(test, subscription, []);
+
+  subscription.addFilter(f$("##.foo"));
+  compareSubscriptionFilters(test, subscription, ["##.foo"]);
+  test.equal(subscription.searchFilter(f$("##.foo")), 0);
+
+  subscription.addFilter(f$("##.bar"));
+  compareSubscriptionFilters(test, subscription, ["##.foo", "##.bar"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), 1);
+
+  // Repeat filter.
+  subscription.addFilter(f$("##.bar"));
+  compareSubscriptionFilters(test, subscription, ["##.foo", "##.bar",
+                                                  "##.bar"]);
+
+  // The first occurrence is found.
+  test.equal(subscription.searchFilter(f$("##.bar")), 1);
+
+  subscription.deleteFilterAt(0);
+  compareSubscriptionFilters(test, subscription, ["##.bar", "##.bar"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), 0);
+
+  subscription.insertFilterAt(f$("##.foo"), 0);
+  compareSubscriptionFilters(test, subscription, ["##.foo", "##.bar",
+                                                  "##.bar"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), 1);
+
+  subscription.deleteFilterAt(1);
+  compareSubscriptionFilters(test, subscription, ["##.foo", "##.bar"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), 1);
+
+  subscription.deleteFilterAt(1);
+  compareSubscriptionFilters(test, subscription, ["##.foo"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), -1);
+
+  subscription.addFilter(f$("##.bar"));
+  compareSubscriptionFilters(test, subscription, ["##.foo", "##.bar"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), 1);
+
+  subscription.clearFilters();
+  compareSubscriptionFilters(test, subscription, []);
+  test.equal(subscription.searchFilter(f$("##.foo")), -1);
+  test.equal(subscription.searchFilter(f$("##.bar")), -1);
+
+  subscription.addFilter(f$("##.bar"));
+  compareSubscriptionFilters(test, subscription, ["##.bar"]);
+
+  subscription.addFilter(f$("##.foo"));
+  compareSubscriptionFilters(test, subscription, ["##.bar", "##.foo"]);
+  test.equal(subscription.searchFilter(f$("##.bar")), 0);
+  test.equal(subscription.searchFilter(f$("##.foo")), 1);
+
+  // Insert outside of bounds.
+  subscription.insertFilterAt(f$("##.lambda"), 1000);
+  compareSubscriptionFilters(test, subscription, ["##.bar", "##.foo",
+                                                  "##.lambda"]);
+  test.equal(subscription.searchFilter(f$("##.lambda")), 2);
+
+  // Delete outside of bounds.
+  subscription.deleteFilterAt(1000);
+  compareSubscriptionFilters(test, subscription, ["##.bar", "##.foo",
+                                                  "##.lambda"]);
+  test.equal(subscription.searchFilter(f$("##.lambda")), 2);
+
+  // Insert outside of bounds (negative).
+  subscription.insertFilterAt(f$("##.lambda"), -1000);
+  compareSubscriptionFilters(test, subscription, ["##.lambda", "##.bar",
+                                                  "##.foo", "##.lambda"]);
+  test.equal(subscription.searchFilter(f$("##.lambda")), 0);
+
+  // Delete outside of bounds (negative).
+  subscription.deleteFilterAt(-1000);
+  compareSubscriptionFilters(test, subscription, ["##.lambda", "##.bar",
+                                                  "##.foo", "##.lambda"]);
+  test.equal(subscription.searchFilter(f$("##.lambda")), 0);
+
+  test.done();
+};