Issue 6820 - Move tests to mocha

test/filterNotifier.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 assert = require("assert");
 const {createSandbox} = require("./_common");
 
 let filterNotifier = null;
 
-exports.setUp = function(callback)
+describe("Filter Notifier", () =>
 {
-  let sandboxedRequire = createSandbox();
-  (
-    {filterNotifier} = sandboxedRequire("../lib/filterNotifier")
-  );
+  beforeEach(() =>
+  {
+    let sandboxedRequire = createSandbox();
+    (
+      {filterNotifier} = sandboxedRequire("../lib/filterNotifier")
+    );
+  });
 
-  callback();
-};
+  let triggeredListeners = [];
+  let listeners = [
+    (...args) => triggeredListeners.push(["listener1", ...args]),
+    (...args) => triggeredListeners.push(["listener2", ...args]),
+    (...args) => triggeredListeners.push(["listener3", ...args])
+  ];
 
-let triggeredListeners = [];
-let listeners = [
-  (...args) => triggeredListeners.push(["listener1", ...args]),
-  (...args) => triggeredListeners.push(["listener2", ...args]),
-  (...args) => triggeredListeners.push(["listener3", ...args])
-];
+  function addListener(listener)
+  {
+    filterNotifier.on("foo", listener);
+  }
 
-function addListener(listener)
-{
-  filterNotifier.on("foo", listener);
-}
+  function removeListener(listener)
+  {
+    filterNotifier.off("foo", listener);
+  }
 
-function removeListener(listener)
-{
-  filterNotifier.off("foo", listener);
-}
+  function compareListeners(testDescription, list)
+  {
+    assert.equal(filterNotifier.hasListeners(), list.length > 0, testDescription);
+    assert.equal(filterNotifier.hasListeners("foo"), list.length > 0,
+                 testDescription);
 
-function compareListeners(test, testDescription, list)
-{
-  test.equal(filterNotifier.hasListeners(), list.length > 0, testDescription);
-  test.equal(filterNotifier.hasListeners("foo"), list.length > 0,
-             testDescription);
+    assert.equal(filterNotifier.hasListeners("bar"), false, testDescription);
 
-  test.equal(filterNotifier.hasListeners("bar"), false, testDescription);
+    let result1 = triggeredListeners = [];
+    filterNotifier.emit("foo", {bar: true});
 
-  let result1 = triggeredListeners = [];
-  filterNotifier.emit("foo", {bar: true});
+    let result2 = triggeredListeners = [];
+    for (let observer of list)
+      observer({bar: true});
 
-  let result2 = triggeredListeners = [];
-  for (let observer of list)
-    observer({bar: true});
+    assert.deepEqual(result1, result2, testDescription);
+  }
 
-  test.deepEqual(result1, result2, testDescription);
-}
+  it("Add/Remove Listeners", () =>
+  {
+    let [listener1, listener2, listener3] = listeners;
 
-exports.testAddingRemovingListeners = function(test)
-{
-  let [listener1, listener2, listener3] = listeners;
+    compareListeners("No listeners", []);
 
-  compareListeners(test, "No listeners", []);
+    addListener(listener1);
+    compareListeners("addListener(listener1)", [listener1]);
 
-  addListener(listener1);
-  compareListeners(test, "addListener(listener1)", [listener1]);
+    addListener(listener1);
+    compareListeners("addListener(listener1) again", [listener1, listener1]);
 
-  addListener(listener1);
-  compareListeners(test, "addListener(listener1) again", [listener1, listener1]);
+    addListener(listener2);
+    compareListeners("addListener(listener2)", [listener1, listener1, listener2]);
 
-  addListener(listener2);
-  compareListeners(test, "addListener(listener2)", [listener1, listener1, listener2]);
+    removeListener(listener1);
+    compareListeners("removeListener(listener1)", [listener1, listener2]);
 
-  removeListener(listener1);
-  compareListeners(test, "removeListener(listener1)", [listener1, listener2]);
+    removeListener(listener1);
+    compareListeners("removeListener(listener1) again", [listener2]);
 
-  removeListener(listener1);
-  compareListeners(test, "removeListener(listener1) again", [listener2]);
+    addListener(listener3);
+    compareListeners("addListener(listener3)", [listener2, listener3]);
 
-  addListener(listener3);
-  compareListeners(test, "addListener(listener3)", [listener2, listener3]);
+    addListener(listener1);
+    compareListeners("addListener(listener1)", [listener2, listener3, listener1]);
 
-  addListener(listener1);
-  compareListeners(test, "addListener(listener1)", [listener2, listener3, listener1]);
+    removeListener(listener3);
+    compareListeners("removeListener(listener3)", [listener2, listener1]);
 
-  removeListener(listener3);
-  compareListeners(test, "removeListener(listener3)", [listener2, listener1]);
+    removeListener(listener1);
+    compareListeners("removeListener(listener1)", [listener2]);
 
-  removeListener(listener1);
-  compareListeners(test, "removeListener(listener1)", [listener2]);
+    removeListener(listener2);
+    compareListeners("removeListener(listener2)", []);
+  });
 
-  removeListener(listener2);
-  compareListeners(test, "removeListener(listener2)", []);
+  it("Removing listeners while being called", () =>
+  {
+    let listener1 = function(...args)
+    {
+      listeners[0](...args);
+      removeListener(listener1);
+    };
+    let listener2 = listeners[1];
+    addListener(listener1);
+    addListener(listener2);
 
-  test.done();
-};
-
-exports.testRemovingListenersWhileBeingCalled = function(test)
-{
-  let listener1 = function(...args)
-  {
-    listeners[0](...args);
-    removeListener(listener1);
-  };
-  let listener2 = listeners[1];
-  addListener(listener1);
-  addListener(listener2);
-
-  compareListeners(test, "Initial call", [listener1, listener2]);
-  compareListeners(test, "Subsequent calls", [listener2]);
-
-  test.done();
-};
+    compareListeners("Initial call", [listener1, listener2]);
+    compareListeners("Subsequent calls", [listener2]);
+  });
+});