Issue 6820 - Move tests to mocha

test/filterStorage.js

Index: test/filterStorage.js
===================================================================
--- a/test/filterStorage.js
+++ b/test/filterStorage.js
@@ -12,515 +12,501 @@
  * 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 assert = require("assert");
 const {createSandbox} = require("./_common");
 
 let Filter = null;
 let filterNotifier = null;
 let filterStorage = null;
 let Subscription = null;
 
-exports.setUp = function(callback)
-{
-  let sandboxedRequire = createSandbox();
-
-  sandboxedRequire("../lib/filterListener");
-  (
-    {Filter} = sandboxedRequire("../lib/filterClasses"),
-    {filterNotifier} = sandboxedRequire("../lib/filterNotifier"),
-    {filterStorage} = sandboxedRequire("../lib/filterStorage"),
-    {Subscription} = sandboxedRequire("../lib/subscriptionClasses")
-  );
-
-  callback();
-};
-
-function addListener(listener)
-{
-  let makeWrapper = name => (...args) => listener(name, ...args);
-
-  filterNotifier.on("subscription.added", makeWrapper("subscription.added"));
-  filterNotifier.on("subscription.removed",
-                    makeWrapper("subscription.removed"));
-
-  filterNotifier.on("filter.added", makeWrapper("filter.added"));
-  filterNotifier.on("filter.removed", makeWrapper("filter.removed"));
-  filterNotifier.on("filter.moved", makeWrapper("filter.moved"));
-
-  filterNotifier.on("filter.hitCount", makeWrapper("filter.hitCount"));
-  filterNotifier.on("filter.lastHit", makeWrapper("filter.lastHit"));
-}
-
-function compareSubscriptionList(test, testMessage, list,
-                                 knownSubscriptions = null)
-{
-  let result = [...filterStorage.knownSubscriptions.keys()];
-  let expected = list.map(subscription => subscription.url);
-  test.deepEqual(result, expected, testMessage);
-
-  if (knownSubscriptions)
-  {
-    test.deepEqual([...Subscription.knownSubscriptions.values()],
-                   knownSubscriptions, testMessage);
-  }
-}
-
-function compareFiltersList(test, testMessage, list)
-{
-  let result = [...filterStorage.subscriptions()].map(
-    subscription => [...subscription.filterText()]);
-  test.deepEqual(result, list, testMessage);
-}
-
-function compareFilterSubscriptions(test, testMessage, filter, list)
-{
-  let result = [...filterStorage.subscriptions(filter.text)].map(subscription => subscription.url);
-  let expected = list.map(subscription => subscription.url);
-  test.deepEqual(result, expected, testMessage);
-}
-
-exports.testAddingSubscriptions = function(test)
+describe("Filter Storage", () =>
 {
-  let subscription1 = Subscription.fromURL("http://test1/");
-  let subscription2 = Subscription.fromURL("http://test2/");
-
-  let changes = [];
-  function listener(action, subscription)
+  beforeEach(() =>
   {
-    if (action.indexOf("subscription.") == 0)
-      changes.push(action + " " + subscription.url);
-  }
-  addListener(listener);
+    let sandboxedRequire = createSandbox();
+
+    sandboxedRequire("../lib/filterListener");
+    (
+      {Filter} = sandboxedRequire("../lib/filterClasses"),
+      {filterNotifier} = sandboxedRequire("../lib/filterNotifier"),
+      {filterStorage} = sandboxedRequire("../lib/filterStorage"),
+      {Subscription} = sandboxedRequire("../lib/subscriptionClasses")
+    );
+  });
 
-  compareSubscriptionList(test, "Initial state", []);
-  test.deepEqual(changes, [], "Received changes");
+  function addListener(listener)
+  {
+    let makeWrapper = name => (...args) => listener(name, ...args);
+
+    filterNotifier.on("subscription.added", makeWrapper("subscription.added"));
+    filterNotifier.on("subscription.removed",
+                      makeWrapper("subscription.removed"));
+
+    filterNotifier.on("filter.added", makeWrapper("filter.added"));
+    filterNotifier.on("filter.removed", makeWrapper("filter.removed"));
+    filterNotifier.on("filter.moved", makeWrapper("filter.moved"));
 
-  changes = [];
-  filterStorage.addSubscription(subscription1);
-  compareSubscriptionList(test, "Adding first subscription", [subscription1]);
-  test.deepEqual(changes, ["subscription.added http://test1/"], "Received changes");
+    filterNotifier.on("filter.hitCount", makeWrapper("filter.hitCount"));
+    filterNotifier.on("filter.lastHit", makeWrapper("filter.lastHit"));
+  }
+
+  function compareSubscriptionList(testMessage, list,
+                                   knownSubscriptions = null)
+  {
+    let result = [...filterStorage.knownSubscriptions.keys()];
+    let expected = list.map(subscription => subscription.url);
+    assert.deepEqual(result, expected, testMessage);
 
-  changes = [];
-  filterStorage.addSubscription(subscription1);
-  compareSubscriptionList(test, "Adding already added subscription", [subscription1]);
-  test.deepEqual(changes, [], "Received changes");
+    if (knownSubscriptions)
+    {
+      assert.deepEqual([...Subscription.knownSubscriptions.values()],
+                     knownSubscriptions, testMessage);
+    }
+  }
 
-  changes = [];
-  filterStorage.addSubscription(subscription2);
-  compareSubscriptionList(test, "Adding second", [subscription1, subscription2]);
-  test.deepEqual(changes, ["subscription.added http://test2/"], "Received changes");
+  function compareFiltersList(testMessage, list)
+  {
+    let result = [...filterStorage.subscriptions()].map(
+      subscription => [...subscription.filterText()]);
+    assert.deepEqual(result, list, testMessage);
+  }
+
+  function compareFilterSubscriptions(testMessage, filter, list)
+  {
+    let result = [...filterStorage.subscriptions(filter.text)].map(subscription => subscription.url);
+    let expected = list.map(subscription => subscription.url);
+    assert.deepEqual(result, expected, testMessage);
+  }
 
-  filterStorage.removeSubscription(subscription1);
-  compareSubscriptionList(test, "Remove", [subscription2]);
+  it("Adding Subscriptions", () =>
+  {
+    let subscription1 = Subscription.fromURL("http://test1/");
+    let subscription2 = Subscription.fromURL("http://test2/");
 
-  changes = [];
-  filterStorage.addSubscription(subscription1);
-  compareSubscriptionList(test, "Re-adding previously removed subscription", [subscription2, subscription1]);
-  test.deepEqual(changes, ["subscription.added http://test1/"], "Received changes");
+    let changes = [];
+    function listener(action, subscription)
+    {
+      if (action.indexOf("subscription.") == 0)
+        changes.push(action + " " + subscription.url);
+    }
+    addListener(listener);
 
-  test.done();
-};
+    compareSubscriptionList("Initial state", []);
+    assert.deepEqual(changes, [], "Received changes");
 
-exports.testRemovingSubscriptions = function(test)
-{
-  let subscription1 = Subscription.fromURL("http://test1/");
-  let subscription2 = Subscription.fromURL("http://test2/");
+    changes = [];
+    filterStorage.addSubscription(subscription1);
+    compareSubscriptionList("Adding first subscription", [subscription1]);
+    assert.deepEqual(changes, ["subscription.added http://test1/"], "Received changes");
+
+    changes = [];
+    filterStorage.addSubscription(subscription1);
+    compareSubscriptionList("Adding already added subscription", [subscription1]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  test.equal(Subscription.fromURL(subscription1.url), subscription1,
-             "Subscription known before addition");
+    changes = [];
+    filterStorage.addSubscription(subscription2);
+    compareSubscriptionList("Adding second", [subscription1, subscription2]);
+    assert.deepEqual(changes, ["subscription.added http://test2/"], "Received changes");
+
+    filterStorage.removeSubscription(subscription1);
+    compareSubscriptionList("Remove", [subscription2]);
 
-  filterStorage.addSubscription(subscription1);
-  filterStorage.addSubscription(subscription2);
+    changes = [];
+    filterStorage.addSubscription(subscription1);
+    compareSubscriptionList("Re-adding previously removed subscription", [subscription2, subscription1]);
+    assert.deepEqual(changes, ["subscription.added http://test1/"], "Received changes");
+  });
 
-  let changes = [];
-  function listener(action, subscription)
+  it("Removing Subscriptions", () =>
   {
-    if (action.indexOf("subscription.") == 0)
-      changes.push(action + " " + subscription.url);
-  }
-  addListener(listener);
+    let subscription1 = Subscription.fromURL("http://test1/");
+    let subscription2 = Subscription.fromURL("http://test2/");
+
+    assert.equal(Subscription.fromURL(subscription1.url), subscription1,
+               "Subscription known before addition");
 
-  compareSubscriptionList(test, "Initial state", [subscription1, subscription2],
-                          [subscription1, subscription2]);
-  test.deepEqual(changes, [], "Received changes");
+    filterStorage.addSubscription(subscription1);
+    filterStorage.addSubscription(subscription2);
+
+    let changes = [];
+    function listener(action, subscription)
+    {
+      if (action.indexOf("subscription.") == 0)
+        changes.push(action + " " + subscription.url);
+    }
+    addListener(listener);
 
-  test.equal(Subscription.fromURL(subscription1.url), subscription1,
-             "Subscription known after addition");
+    compareSubscriptionList("Initial state", [subscription1, subscription2],
+                            [subscription1, subscription2]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.removeSubscription(subscription1);
-  compareSubscriptionList(test, "Removing first subscription", [subscription2],
-                          [subscription2]);
-  test.deepEqual(changes, ["subscription.removed http://test1/"], "Received changes");
+    assert.equal(Subscription.fromURL(subscription1.url), subscription1,
+               "Subscription known after addition");
+
+    changes = [];
+    filterStorage.removeSubscription(subscription1);
+    compareSubscriptionList("Removing first subscription", [subscription2],
+                            [subscription2]);
+    assert.deepEqual(changes, ["subscription.removed http://test1/"], "Received changes");
 
-  // Once a subscription has been removed, it is forgotten; a new object is
-  // created for the previously known subscription URL.
-  test.notEqual(Subscription.fromURL(subscription1.url), subscription1,
-                "Subscription forgotten upon removal");
-  Subscription.knownSubscriptions.delete(subscription1.url);
+    // Once a subscription has been removed, it is forgotten; a new object is
+    // created for the previously known subscription URL.
+    assert.notEqual(Subscription.fromURL(subscription1.url), subscription1,
+                  "Subscription forgotten upon removal");
+    Subscription.knownSubscriptions.delete(subscription1.url);
 
-  changes = [];
-  filterStorage.removeSubscription(subscription1);
-  compareSubscriptionList(test, "Removing already removed subscription", [subscription2],
-                          [subscription2]);
-  test.deepEqual(changes, [], "Received changes");
+    changes = [];
+    filterStorage.removeSubscription(subscription1);
+    compareSubscriptionList("Removing already removed subscription", [subscription2],
+                            [subscription2]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.removeSubscription(subscription2);
-  compareSubscriptionList(test, "Removing remaining subscription", [], []);
-  test.deepEqual(changes, ["subscription.removed http://test2/"], "Received changes");
-
-  filterStorage.addSubscription(subscription1);
-  compareSubscriptionList(test, "Add", [subscription1], []);
+    changes = [];
+    filterStorage.removeSubscription(subscription2);
+    compareSubscriptionList("remaining subscription", [], []);
+    assert.deepEqual(changes, ["subscription.removed http://test2/"], "Received changes");
 
-  changes = [];
-  filterStorage.removeSubscription(subscription1);
-  compareSubscriptionList(test, "Re-removing previously added subscription", [], []);
-  test.deepEqual(changes, ["subscription.removed http://test1/"], "Received changes");
+    filterStorage.addSubscription(subscription1);
+    compareSubscriptionList("Add", [subscription1], []);
 
-  test.done();
-};
+    changes = [];
+    filterStorage.removeSubscription(subscription1);
+    compareSubscriptionList("Re-removing previously added subscription", [], []);
+    assert.deepEqual(changes, ["subscription.removed http://test1/"], "Received changes");
+  });
 
-exports.testMovingSubscriptions = function(test)
-{
-  let subscription1 = Subscription.fromURL("http://test1/");
-  let subscription2 = Subscription.fromURL("http://test2/");
-  let subscription3 = Subscription.fromURL("http://test3/");
+  it("Moving Subscriptions", () =>
+  {
+    let subscription1 = Subscription.fromURL("http://test1/");
+    let subscription2 = Subscription.fromURL("http://test2/");
+    let subscription3 = Subscription.fromURL("http://test3/");
 
-  filterStorage.addSubscription(subscription1);
-  filterStorage.addSubscription(subscription2);
-  filterStorage.addSubscription(subscription3);
+    filterStorage.addSubscription(subscription1);
+    filterStorage.addSubscription(subscription2);
+    filterStorage.addSubscription(subscription3);
 
-  let changes = [];
-  function listener(action, subscription)
-  {
-    if (action.indexOf("subscription.") == 0)
-      changes.push(action + " " + subscription.url);
-  }
-  addListener(listener);
+    let changes = [];
+    function listener(action, subscription)
+    {
+      if (action.indexOf("subscription.") == 0)
+        changes.push(action + " " + subscription.url);
+    }
+    addListener(listener);
 
-  compareSubscriptionList(test, "Initial state", [subscription1, subscription2, subscription3]);
-  test.deepEqual(changes, [], "Received changes");
-
-  filterStorage.removeSubscription(subscription2);
-  compareSubscriptionList(test, "Remove", [subscription1, subscription3]);
+    compareSubscriptionList("Initial state", [subscription1, subscription2, subscription3]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  test.done();
-};
+    filterStorage.removeSubscription(subscription2);
+    compareSubscriptionList("Remove", [subscription1, subscription3]);
+  });
 
-exports.testAddingFilters = function(test)
-{
-  let subscription1 = Subscription.fromURL("~blocking");
-  subscription1.defaults = ["blocking"];
+  it("Adding Filters", () =>
+  {
+    let subscription1 = Subscription.fromURL("~blocking");
+    subscription1.defaults = ["blocking"];
 
-  let subscription2 = Subscription.fromURL("~exceptions");
-  subscription2.defaults = ["whitelist", "elemhide"];
+    let subscription2 = Subscription.fromURL("~exceptions");
+    subscription2.defaults = ["whitelist", "elemhide"];
 
-  let subscription3 = Subscription.fromURL("~other");
+    let subscription3 = Subscription.fromURL("~other");
 
-  filterStorage.addSubscription(subscription1);
-  filterStorage.addSubscription(subscription2);
-  filterStorage.addSubscription(subscription3);
+    filterStorage.addSubscription(subscription1);
+    filterStorage.addSubscription(subscription2);
+    filterStorage.addSubscription(subscription3);
 
-  let changes = [];
-  function listener(action, filter)
-  {
-    if (action.indexOf("filter.") == 0)
-      changes.push(action + " " + filter.text);
-  }
-  addListener(listener);
+    let changes = [];
+    function listener(action, filter)
+    {
+      if (action.indexOf("filter.") == 0)
+        changes.push(action + " " + filter.text);
+    }
+    addListener(listener);
 
-  compareFiltersList(test, "Initial state", [[], [], []]);
-  test.deepEqual(changes, [], "Received changes");
+    compareFiltersList("Initial state", [[], [], []]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("foo"));
-  compareFiltersList(test, "Adding blocking filter", [["foo"], [], []]);
-  test.deepEqual(changes, ["filter.added foo"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("foo"));
+    compareFiltersList("Adding blocking filter", [["foo"], [], []]);
+    assert.deepEqual(changes, ["filter.added foo"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("@@bar"));
-  compareFiltersList(test, "Adding exception rule", [["foo"], ["@@bar"], []]);
-  test.deepEqual(changes, ["filter.added @@bar"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("@@bar"));
+    compareFiltersList("Adding exception rule", [["foo"], ["@@bar"], []]);
+    assert.deepEqual(changes, ["filter.added @@bar"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("foo##bar"));
-  compareFiltersList(test, "Adding hiding rule", [["foo"], ["@@bar", "foo##bar"], []]);
-  test.deepEqual(changes, ["filter.added foo##bar"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("foo##bar"));
+    compareFiltersList("Adding hiding rule", [["foo"], ["@@bar", "foo##bar"], []]);
+    assert.deepEqual(changes, ["filter.added foo##bar"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("foo#@#bar"));
-  compareFiltersList(test, "Adding hiding exception", [["foo"], ["@@bar", "foo##bar", "foo#@#bar"], []]);
-  test.deepEqual(changes, ["filter.added foo#@#bar"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("foo#@#bar"));
+    compareFiltersList("Adding hiding exception", [["foo"], ["@@bar", "foo##bar", "foo#@#bar"], []]);
+    assert.deepEqual(changes, ["filter.added foo#@#bar"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("example.com#$#foobar"));
-  compareFiltersList(test, "Adding snippet filter", [["foo"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar"]]);
-  test.deepEqual(changes, ["filter.added example.com#$#foobar"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("example.com#$#foobar"));
+    compareFiltersList("Adding snippet filter", [["foo"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar"]]);
+    assert.deepEqual(changes, ["filter.added example.com#$#foobar"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("!foobar"));
-  compareFiltersList(test, "Adding comment", [["foo", "!foobar"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar"]]);
-  test.deepEqual(changes, ["filter.added !foobar"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("!foobar"));
+    compareFiltersList("Adding comment", [["foo", "!foobar"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar"]]);
+    assert.deepEqual(changes, ["filter.added !foobar"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("foo"));
-  compareFiltersList(test, "Adding already added filter", [["foo", "!foobar"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar"]]);
-  test.deepEqual(changes, [], "Received changes");
-
-  subscription1.disabled = true;
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("foo"));
+    compareFiltersList("Adding already added filter", [["foo", "!foobar"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("foo"));
-  compareFiltersList(test, "Adding filter already in a disabled subscription", [["foo", "!foobar"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar", "foo"]]);
-  test.deepEqual(changes, ["filter.added foo"], "Received changes");
+    subscription1.disabled = true;
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("foo"), subscription1);
-  compareFiltersList(test, "Adding filter to an explicit subscription", [["foo", "!foobar", "foo"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar", "foo"]]);
-  test.deepEqual(changes, ["filter.added foo"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("foo"));
+    compareFiltersList("Adding filter already in a disabled subscription", [["foo", "!foobar"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar", "foo"]]);
+    assert.deepEqual(changes, ["filter.added foo"], "Received changes");
+
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("foo"), subscription1);
+    compareFiltersList("Adding filter to an explicit subscription", [["foo", "!foobar", "foo"], ["@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar", "foo"]]);
+    assert.deepEqual(changes, ["filter.added foo"], "Received changes");
 
-  changes = [];
-  filterStorage.addFilter(Filter.fromText("example.com#$#foobar"), subscription2, 0);
-  compareFiltersList(test, "Adding filter to an explicit subscription with position", [["foo", "!foobar", "foo"], ["example.com#$#foobar", "@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar", "foo"]]);
-  test.deepEqual(changes, ["filter.added example.com#$#foobar"], "Received changes");
+    changes = [];
+    filterStorage.addFilter(Filter.fromText("example.com#$#foobar"), subscription2, 0);
+    compareFiltersList("Adding filter to an explicit subscription with position", [["foo", "!foobar", "foo"], ["example.com#$#foobar", "@@bar", "foo##bar", "foo#@#bar"], ["example.com#$#foobar", "foo"]]);
+    assert.deepEqual(changes, ["filter.added example.com#$#foobar"], "Received changes");
+  });
 
-  test.done();
-};
-
-exports.testRemovingFilters = function(test)
-{
-  let subscription1 = Subscription.fromURL("~foo");
-  subscription1.addFilter(Filter.fromText("foo"));
-  subscription1.addFilter(Filter.fromText("foo"));
-  subscription1.addFilter(Filter.fromText("bar"));
+  it("Removing Filters", () =>
+  {
+    let subscription1 = Subscription.fromURL("~foo");
+    subscription1.addFilter(Filter.fromText("foo"));
+    subscription1.addFilter(Filter.fromText("foo"));
+    subscription1.addFilter(Filter.fromText("bar"));
 
-  let subscription2 = Subscription.fromURL("~bar");
-  subscription2.addFilter(Filter.fromText("foo"));
-  subscription2.addFilter(Filter.fromText("bar"));
-  subscription2.addFilter(Filter.fromText("foo"));
+    let subscription2 = Subscription.fromURL("~bar");
+    subscription2.addFilter(Filter.fromText("foo"));
+    subscription2.addFilter(Filter.fromText("bar"));
+    subscription2.addFilter(Filter.fromText("foo"));
 
-  let subscription3 = Subscription.fromURL("http://test/");
-  subscription3.addFilter(Filter.fromText("foo"));
-  subscription3.addFilter(Filter.fromText("bar"));
+    let subscription3 = Subscription.fromURL("http://test/");
+    subscription3.addFilter(Filter.fromText("foo"));
+    subscription3.addFilter(Filter.fromText("bar"));
 
-  filterStorage.addSubscription(subscription1);
-  filterStorage.addSubscription(subscription2);
-  filterStorage.addSubscription(subscription3);
+    filterStorage.addSubscription(subscription1);
+    filterStorage.addSubscription(subscription2);
+    filterStorage.addSubscription(subscription3);
 
-  let changes = [];
-  function listener(action, filter)
-  {
-    if (action.indexOf("filter.") == 0)
-      changes.push(action + " " + filter.text);
-  }
-  addListener(listener);
+    let changes = [];
+    function listener(action, filter)
+    {
+      if (action.indexOf("filter.") == 0)
+        changes.push(action + " " + filter.text);
+    }
+    addListener(listener);
 
-  compareFiltersList(test, "Initial state", [["foo", "foo", "bar"], ["foo", "bar", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
+    compareFiltersList("Initial state", [["foo", "foo", "bar"], ["foo", "bar", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.removeFilter(Filter.fromText("foo"), subscription2, 0);
-  compareFiltersList(test, "Remove with explicit subscription and position", [["foo", "foo", "bar"], ["bar", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, ["filter.removed foo"], "Received changes");
+    changes = [];
+    filterStorage.removeFilter(Filter.fromText("foo"), subscription2, 0);
+    compareFiltersList("Remove with explicit subscription and position", [["foo", "foo", "bar"], ["bar", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, ["filter.removed foo"], "Received changes");
 
-  changes = [];
-  filterStorage.removeFilter(Filter.fromText("foo"), subscription2, 0);
-  compareFiltersList(test, "Remove with explicit subscription and wrong position", [["foo", "foo", "bar"], ["bar", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
+    changes = [];
+    filterStorage.removeFilter(Filter.fromText("foo"), subscription2, 0);
+    compareFiltersList("Remove with explicit subscription and wrong position", [["foo", "foo", "bar"], ["bar", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.removeFilter(Filter.fromText("foo"), subscription1);
-  compareFiltersList(test, "Remove with explicit subscription", [["bar"], ["bar", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, ["filter.removed foo", "filter.removed foo"], "Received changes");
+    changes = [];
+    filterStorage.removeFilter(Filter.fromText("foo"), subscription1);
+    compareFiltersList("Remove with explicit subscription", [["bar"], ["bar", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, ["filter.removed foo", "filter.removed foo"], "Received changes");
 
-  changes = [];
-  filterStorage.removeFilter(Filter.fromText("foo"), subscription1);
-  compareFiltersList(test, "Remove from subscription not having the filter", [["bar"], ["bar", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
-
-  changes = [];
-  filterStorage.removeFilter(Filter.fromText("bar"));
-  compareFiltersList(test, "Remove everywhere", [[], ["foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, ["filter.removed bar", "filter.removed bar"], "Received changes");
+    changes = [];
+    filterStorage.removeFilter(Filter.fromText("foo"), subscription1);
+    compareFiltersList("Remove from subscription not having the filter", [["bar"], ["bar", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.removeFilter(Filter.fromText("bar"));
-  compareFiltersList(test, "Remove of unknown filter", [[], ["foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
-
-  test.done();
-};
+    changes = [];
+    filterStorage.removeFilter(Filter.fromText("bar"));
+    compareFiltersList("Remove everywhere", [[], ["foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, ["filter.removed bar", "filter.removed bar"], "Received changes");
 
-exports.testMovingFilters = function(test)
-{
-  let subscription1 = Subscription.fromURL("~foo");
-  subscription1.addFilter(Filter.fromText("foo"));
-  subscription1.addFilter(Filter.fromText("bar"));
-  subscription1.addFilter(Filter.fromText("bas"));
-  subscription1.addFilter(Filter.fromText("foo"));
+    changes = [];
+    filterStorage.removeFilter(Filter.fromText("bar"));
+    compareFiltersList("Remove of unknown filter", [[], ["foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
+  });
+
+  it("Moving Filters", () =>
+  {
+    let subscription1 = Subscription.fromURL("~foo");
+    subscription1.addFilter(Filter.fromText("foo"));
+    subscription1.addFilter(Filter.fromText("bar"));
+    subscription1.addFilter(Filter.fromText("bas"));
+    subscription1.addFilter(Filter.fromText("foo"));
 
-  let subscription2 = Subscription.fromURL("http://test/");
-  subscription2.addFilter(Filter.fromText("foo"));
-  subscription2.addFilter(Filter.fromText("bar"));
+    let subscription2 = Subscription.fromURL("http://test/");
+    subscription2.addFilter(Filter.fromText("foo"));
+    subscription2.addFilter(Filter.fromText("bar"));
 
-  filterStorage.addSubscription(subscription1);
-  filterStorage.addSubscription(subscription2);
+    filterStorage.addSubscription(subscription1);
+    filterStorage.addSubscription(subscription2);
 
-  let changes = [];
-  function listener(action, filter)
-  {
-    if (action.indexOf("filter.") == 0)
-      changes.push(action + " " + filter.text);
-  }
-  addListener(listener);
+    let changes = [];
+    function listener(action, filter)
+    {
+      if (action.indexOf("filter.") == 0)
+        changes.push(action + " " + filter.text);
+    }
+    addListener(listener);
 
-  compareFiltersList(test, "Initial state", [["foo", "bar", "bas", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
+    compareFiltersList("Initial state", [["foo", "bar", "bas", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.moveFilter(Filter.fromText("foo"), subscription1, 0, 1);
-  compareFiltersList(test, "Regular move", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, ["filter.moved foo"], "Received changes");
+    changes = [];
+    filterStorage.moveFilter(Filter.fromText("foo"), subscription1, 0, 1);
+    compareFiltersList("Regular move", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, ["filter.moved foo"], "Received changes");
 
-  changes = [];
-  filterStorage.moveFilter(Filter.fromText("foo"), subscription1, 0, 3);
-  compareFiltersList(test, "Invalid move", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
+    changes = [];
+    filterStorage.moveFilter(Filter.fromText("foo"), subscription1, 0, 3);
+    compareFiltersList("Invalid move", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.moveFilter(Filter.fromText("foo"), subscription2, 0, 1);
-  compareFiltersList(test, "Invalid subscription", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
+    changes = [];
+    filterStorage.moveFilter(Filter.fromText("foo"), subscription2, 0, 1);
+    compareFiltersList("Invalid subscription", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.moveFilter(Filter.fromText("foo"), subscription1, 1, 1);
-  compareFiltersList(test, "Move to current position", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, [], "Received changes");
+    changes = [];
+    filterStorage.moveFilter(Filter.fromText("foo"), subscription1, 1, 1);
+    compareFiltersList("Move to current position", [["bar", "foo", "bas", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, [], "Received changes");
 
-  changes = [];
-  filterStorage.moveFilter(Filter.fromText("bar"), subscription1, 0, 1);
-  compareFiltersList(test, "Regular move", [["foo", "bar", "bas", "foo"], ["foo", "bar"]]);
-  test.deepEqual(changes, ["filter.moved bar"], "Received changes");
-
-  test.done();
-};
+    changes = [];
+    filterStorage.moveFilter(Filter.fromText("bar"), subscription1, 0, 1);
+    compareFiltersList("Regular move", [["foo", "bar", "bas", "foo"], ["foo", "bar"]]);
+    assert.deepEqual(changes, ["filter.moved bar"], "Received changes");
+  });
 
-exports.testHitCounts = function(test)
-{
-  let changes = [];
-  function listener(action, filter)
+  it("Hit Counts", () =>
   {
-    if (action.indexOf("filter.") == 0)
-      changes.push(action + " " + filter.text);
-  }
-  addListener(listener);
+    let changes = [];
+    function listener(action, filter)
+    {
+      if (action.indexOf("filter.") == 0)
+        changes.push(action + " " + filter.text);
+    }
+    addListener(listener);
 
-  let filter1 = Filter.fromText("filter1");
-  let filter2 = Filter.fromText("filter2");
+    let filter1 = Filter.fromText("filter1");
+    let filter2 = Filter.fromText("filter2");
 
-  filterStorage.addFilter(filter1);
+    filterStorage.addFilter(filter1);
 
-  test.equal(filter1.hitCount, 0, "filter1 initial hit count");
-  test.equal(filter2.hitCount, 0, "filter2 initial hit count");
-  test.equal(filter1.lastHit, 0, "filter1 initial last hit");
-  test.equal(filter2.lastHit, 0, "filter2 initial last hit");
+    assert.equal(filter1.hitCount, 0, "filter1 initial hit count");
+    assert.equal(filter2.hitCount, 0, "filter2 initial hit count");
+    assert.equal(filter1.lastHit, 0, "filter1 initial last hit");
+    assert.equal(filter2.lastHit, 0, "filter2 initial last hit");
 
-  changes = [];
-  filterStorage.increaseHitCount(filter1);
-  test.equal(filter1.hitCount, 1, "Hit count after increase (filter in list)");
-  test.ok(filter1.lastHit > 0, "Last hit changed after increase");
-  test.deepEqual(changes, ["filter.hitCount filter1", "filter.lastHit filter1"], "Received changes");
+    changes = [];
+    filterStorage.increaseHitCount(filter1);
+    assert.equal(filter1.hitCount, 1, "Hit count after increase (filter in list)");
+    assert.ok(filter1.lastHit > 0, "Last hit changed after increase");
+    assert.deepEqual(changes, ["filter.hitCount filter1", "filter.lastHit filter1"], "Received changes");
 
-  changes = [];
-  filterStorage.increaseHitCount(filter2);
-  test.equal(filter2.hitCount, 1, "Hit count after increase (filter not in list)");
-  test.ok(filter2.lastHit > 0, "Last hit changed after increase");
-  test.deepEqual(changes, ["filter.hitCount filter2", "filter.lastHit filter2"], "Received changes");
+    changes = [];
+    filterStorage.increaseHitCount(filter2);
+    assert.equal(filter2.hitCount, 1, "Hit count after increase (filter not in list)");
+    assert.ok(filter2.lastHit > 0, "Last hit changed after increase");
+    assert.deepEqual(changes, ["filter.hitCount filter2", "filter.lastHit filter2"], "Received changes");
 
-  changes = [];
-  filterStorage.resetHitCounts([filter1]);
-  test.equal(filter1.hitCount, 0, "Hit count after reset");
-  test.equal(filter1.lastHit, 0, "Last hit after reset");
-  test.deepEqual(changes, ["filter.hitCount filter1", "filter.lastHit filter1"], "Received changes");
+    changes = [];
+    filterStorage.resetHitCounts([filter1]);
+    assert.equal(filter1.hitCount, 0, "Hit count after reset");
+    assert.equal(filter1.lastHit, 0, "Last hit after reset");
+    assert.deepEqual(changes, ["filter.hitCount filter1", "filter.lastHit filter1"], "Received changes");
 
-  changes = [];
-  filterStorage.resetHitCounts(null);
-  test.equal(filter2.hitCount, 0, "Hit count after complete reset");
-  test.equal(filter2.lastHit, 0, "Last hit after complete reset");
-  test.deepEqual(changes, ["filter.hitCount filter2", "filter.lastHit filter2"], "Received changes");
-
-  test.done();
-};
+    changes = [];
+    filterStorage.resetHitCounts(null);
+    assert.equal(filter2.hitCount, 0, "Hit count after complete reset");
+    assert.equal(filter2.lastHit, 0, "Last hit after complete reset");
+    assert.deepEqual(changes, ["filter.hitCount filter2", "filter.lastHit filter2"], "Received changes");
+  });
 
-exports.testFilterSubscriptionRelationship = function(test)
-{
-  let filter1 = Filter.fromText("filter1");
-  let filter2 = Filter.fromText("filter2");
-  let filter3 = Filter.fromText("filter3");
+  it("Subscription Relationship", () =>
+  {
+    let filter1 = Filter.fromText("filter1");
+    let filter2 = Filter.fromText("filter2");
+    let filter3 = Filter.fromText("filter3");
 
-  let subscription1 = Subscription.fromURL("http://test1/");
-  subscription1.addFilter(filter1);
-  subscription1.addFilter(filter2);
+    let subscription1 = Subscription.fromURL("http://test1/");
+    subscription1.addFilter(filter1);
+    subscription1.addFilter(filter2);
 
-  let subscription2 = Subscription.fromURL("http://test2/");
-  subscription2.addFilter(filter2);
-  subscription2.addFilter(filter3);
+    let subscription2 = Subscription.fromURL("http://test2/");
+    subscription2.addFilter(filter2);
+    subscription2.addFilter(filter3);
 
-  let subscription3 = Subscription.fromURL("http://test3/");
-  subscription3.addFilter(filter1);
-  subscription3.addFilter(filter2);
-  subscription3.addFilter(filter3);
+    let subscription3 = Subscription.fromURL("http://test3/");
+    subscription3.addFilter(filter1);
+    subscription3.addFilter(filter2);
+    subscription3.addFilter(filter3);
 
-  compareFilterSubscriptions(test, "Initial filter1 subscriptions", filter1, []);
-  compareFilterSubscriptions(test, "Initial filter2 subscriptions", filter2, []);
-  compareFilterSubscriptions(test, "Initial filter3 subscriptions", filter3, []);
+    compareFilterSubscriptions("Initial filter1 subscriptions", filter1, []);
+    compareFilterSubscriptions("Initial filter2 subscriptions", filter2, []);
+    compareFilterSubscriptions("Initial filter3 subscriptions", filter3, []);
 
-  filterStorage.addSubscription(subscription1);
+    filterStorage.addSubscription(subscription1);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after adding http://test1/", filter1, [subscription1]);
-  compareFilterSubscriptions(test, "filter2 subscriptions after adding http://test1/", filter2, [subscription1]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after adding http://test1/", filter3, []);
+    compareFilterSubscriptions("filter1 subscriptions after adding http://test1/", filter1, [subscription1]);
+    compareFilterSubscriptions("filter2 subscriptions after adding http://test1/", filter2, [subscription1]);
+    compareFilterSubscriptions("filter3 subscriptions after adding http://test1/", filter3, []);
 
-  filterStorage.addSubscription(subscription2);
+    filterStorage.addSubscription(subscription2);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after adding http://test2/", filter1, [subscription1]);
-  compareFilterSubscriptions(test, "filter2 subscriptions after adding http://test2/", filter2, [subscription1, subscription2]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after adding http://test2/", filter3, [subscription2]);
+    compareFilterSubscriptions("filter1 subscriptions after adding http://test2/", filter1, [subscription1]);
+    compareFilterSubscriptions("filter2 subscriptions after adding http://test2/", filter2, [subscription1, subscription2]);
+    compareFilterSubscriptions("filter3 subscriptions after adding http://test2/", filter3, [subscription2]);
 
-  filterStorage.removeSubscription(subscription1);
+    filterStorage.removeSubscription(subscription1);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after removing http://test1/", filter1, []);
-  compareFilterSubscriptions(test, "filter2 subscriptions after removing http://test1/", filter2, [subscription2]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after removing http://test1/", filter3, [subscription2]);
+    compareFilterSubscriptions("filter1 subscriptions after removing http://test1/", filter1, []);
+    compareFilterSubscriptions("filter2 subscriptions after removing http://test1/", filter2, [subscription2]);
+    compareFilterSubscriptions("filter3 subscriptions after removing http://test1/", filter3, [subscription2]);
 
-  filterStorage.updateSubscriptionFilters(subscription3, [filter3.text]);
+    filterStorage.updateSubscriptionFilters(subscription3, [filter3.text]);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after updating http://test3/ filters", filter1, []);
-  compareFilterSubscriptions(test, "filter2 subscriptions after updating http://test3/ filters", filter2, [subscription2]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after updating http://test3/ filters", filter3, [subscription2]);
+    compareFilterSubscriptions("filter1 subscriptions after updating http://test3/ filters", filter1, []);
+    compareFilterSubscriptions("filter2 subscriptions after updating http://test3/ filters", filter2, [subscription2]);
+    compareFilterSubscriptions("filter3 subscriptions after updating http://test3/ filters", filter3, [subscription2]);
 
-  filterStorage.addSubscription(subscription3);
+    filterStorage.addSubscription(subscription3);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after adding http://test3/", filter1, []);
-  compareFilterSubscriptions(test, "filter2 subscriptions after adding http://test3/", filter2, [subscription2]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after adding http://test3/", filter3, [subscription2, subscription3]);
+    compareFilterSubscriptions("filter1 subscriptions after adding http://test3/", filter1, []);
+    compareFilterSubscriptions("filter2 subscriptions after adding http://test3/", filter2, [subscription2]);
+    compareFilterSubscriptions("filter3 subscriptions after adding http://test3/", filter3, [subscription2, subscription3]);
 
-  filterStorage.updateSubscriptionFilters(subscription3, [filter1.text, filter2.text]);
+    filterStorage.updateSubscriptionFilters(subscription3, [filter1.text, filter2.text]);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after updating http://test3/ filters", filter1, [subscription3]);
-  compareFilterSubscriptions(test, "filter2 subscriptions after updating http://test3/ filters", filter2, [subscription2, subscription3]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after updating http://test3/ filters", filter3, [subscription2]);
+    compareFilterSubscriptions("filter1 subscriptions after updating http://test3/ filters", filter1, [subscription3]);
+    compareFilterSubscriptions("filter2 subscriptions after updating http://test3/ filters", filter2, [subscription2, subscription3]);
+    compareFilterSubscriptions("filter3 subscriptions after updating http://test3/ filters", filter3, [subscription2]);
 
-  filterStorage.removeSubscription(subscription3);
+    filterStorage.removeSubscription(subscription3);
 
-  compareFilterSubscriptions(test, "filter1 subscriptions after removing http://test3/", filter1, []);
-  compareFilterSubscriptions(test, "filter2 subscriptions after removing http://test3/", filter2, [subscription2]);
-  compareFilterSubscriptions(test, "filter3 subscriptions after removing http://test3/", filter3, [subscription2]);
-
-  test.done();
-};
+    compareFilterSubscriptions("filter1 subscriptions after removing http://test3/", filter1, []);
+    compareFilterSubscriptions("filter2 subscriptions after removing http://test3/", filter2, [subscription2]);
+    compareFilterSubscriptions("filter3 subscriptions after removing http://test3/", filter3, [subscription2]);
+  });
+});