The Tor Browser: addon-sdk/source/test/test-collection.js@6474c204b198 (annotated)

addon-sdk/source/test/test-collection.js@6474c204b198 (annotated)

addon-sdk/source/test/test-collection.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 "use strict";
 const collection = require("sdk/util/collection");
 exports.testAddRemove = function (assert) {
   let coll = new collection.Collection();
   compare(assert, coll, []);
   addRemove(assert, coll, [], false);
 };
 exports.testAddRemoveBackingArray = function (assert) {
   let items = ["foo"];
   let coll = new collection.Collection(items);
   compare(assert, coll, items);
   addRemove(assert, coll, items, true);
   items = ["foo", "bar"];
   coll = new collection.Collection(items);
   compare(assert, coll, items);
   addRemove(assert, coll, items, true);
 };
 exports.testProperty = function (assert) {
   let obj = makeObjWithCollProp();
   compare(assert, obj.coll, []);
   addRemove(assert, obj.coll, [], false);
   // Test single-value set.
   let items = ["foo"];
   obj.coll = items[0];
   compare(assert, obj.coll, items);
   addRemove(assert, obj.coll, items, false);
   // Test array set.
   items = ["foo", "bar"];
   obj.coll = items;
   compare(assert, obj.coll, items);
   addRemove(assert, obj.coll, items, false);
 };
 exports.testPropertyBackingArray = function (assert) {
   let items = ["foo"];
   let obj = makeObjWithCollProp(items);
   compare(assert, obj.coll, items);
   addRemove(assert, obj.coll, items, true);
   items = ["foo", "bar"];
   obj = makeObjWithCollProp(items);
   compare(assert, obj.coll, items);
   addRemove(assert, obj.coll, items, true);
 };
 // Adds some values to coll and then removes them.  initialItems is an array
 // containing coll's initial items.  isBacking is true if initialItems is coll's
 // backing array; the point is that updates to coll should affect initialItems
 // if that's the case.
 function addRemove(assert, coll, initialItems, isBacking) {
   let items = isBacking ? initialItems : initialItems.slice(0);
   let numInitialItems = items.length;
   // Test add(val).
   let numInsertions = 5;
   for (let i = 0; i < numInsertions; i++) {
     compare(assert, coll, items);
     coll.add(i);
     if (!isBacking)
       items.push(i);
   }
   compare(assert, coll, items);
   // Add the items we just added to make sure duplicates aren't added.
   for (let i = 0; i < numInsertions; i++)
     coll.add(i);
   compare(assert, coll, items);
   // Test remove(val).  Do a kind of shuffled remove.  Remove item 1, then
   // item 0, 3, 2, 5, 4, ...
   for (let i = 0; i < numInsertions; i++) {
     let val = i % 2 ? i - 1 :
               i === numInsertions - 1 ? i : i + 1;
     coll.remove(val);
     if (!isBacking)
       items.splice(items.indexOf(val), 1);
     compare(assert, coll, items);
   }
   assert.equal(coll.length, numInitialItems,
                "All inserted items should be removed");
   // Remove the items we just removed.  coll should be unchanged.
   for (let i = 0; i < numInsertions; i++)
     coll.remove(i);
   compare(assert, coll, items);
   // Test add and remove([val1, val2]).
   let newItems = [0, 1];
   coll.add(newItems);
   compare(assert, coll, isBacking ? items : items.concat(newItems));
   coll.remove(newItems);
   compare(assert, coll, items);
   assert.equal(coll.length, numInitialItems,
                "All inserted items should be removed");
 }
 // Asserts that the items in coll are the items of array.
 function compare(assert, coll, array) {
   assert.equal(coll.length, array.length,
                "Collection length should be correct");
   let numItems = 0;
   for (let item in coll) {
     assert.equal(item, array[numItems], "Items should be equal");
     numItems++;
   }
   assert.equal(numItems, array.length,
                "Number of items in iteration should be correct");
 }
 // Returns a new object with a collection property named "coll".  backingArray,
 // if defined, will create the collection with that backing array.
 function makeObjWithCollProp(backingArray) {
   let obj = {};
   collection.addCollectionProperty(obj, "coll", backingArray);
   return obj;
 }
 require("sdk/test").run(exports);