addon-sdk/source/test/test-collection.js@6474c204b198
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.
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4 "use strict";
6 const collection = require("sdk/util/collection");
8 exports.testAddRemove = function (assert) {
9 let coll = new collection.Collection();
10 compare(assert, coll, []);
11 addRemove(assert, coll, [], false);
12 };
14 exports.testAddRemoveBackingArray = function (assert) {
15 let items = ["foo"];
16 let coll = new collection.Collection(items);
17 compare(assert, coll, items);
18 addRemove(assert, coll, items, true);
20 items = ["foo", "bar"];
21 coll = new collection.Collection(items);
22 compare(assert, coll, items);
23 addRemove(assert, coll, items, true);
24 };
26 exports.testProperty = function (assert) {
27 let obj = makeObjWithCollProp();
28 compare(assert, obj.coll, []);
29 addRemove(assert, obj.coll, [], false);
31 // Test single-value set.
32 let items = ["foo"];
33 obj.coll = items[0];
34 compare(assert, obj.coll, items);
35 addRemove(assert, obj.coll, items, false);
37 // Test array set.
38 items = ["foo", "bar"];
39 obj.coll = items;
40 compare(assert, obj.coll, items);
41 addRemove(assert, obj.coll, items, false);
42 };
44 exports.testPropertyBackingArray = function (assert) {
45 let items = ["foo"];
46 let obj = makeObjWithCollProp(items);
47 compare(assert, obj.coll, items);
48 addRemove(assert, obj.coll, items, true);
50 items = ["foo", "bar"];
51 obj = makeObjWithCollProp(items);
52 compare(assert, obj.coll, items);
53 addRemove(assert, obj.coll, items, true);
54 };
56 // Adds some values to coll and then removes them. initialItems is an array
57 // containing coll's initial items. isBacking is true if initialItems is coll's
58 // backing array; the point is that updates to coll should affect initialItems
59 // if that's the case.
60 function addRemove(assert, coll, initialItems, isBacking) {
61 let items = isBacking ? initialItems : initialItems.slice(0);
62 let numInitialItems = items.length;
64 // Test add(val).
65 let numInsertions = 5;
66 for (let i = 0; i < numInsertions; i++) {
67 compare(assert, coll, items);
68 coll.add(i);
69 if (!isBacking)
70 items.push(i);
71 }
72 compare(assert, coll, items);
74 // Add the items we just added to make sure duplicates aren't added.
75 for (let i = 0; i < numInsertions; i++)
76 coll.add(i);
77 compare(assert, coll, items);
79 // Test remove(val). Do a kind of shuffled remove. Remove item 1, then
80 // item 0, 3, 2, 5, 4, ...
81 for (let i = 0; i < numInsertions; i++) {
82 let val = i % 2 ? i - 1 :
83 i === numInsertions - 1 ? i : i + 1;
84 coll.remove(val);
85 if (!isBacking)
86 items.splice(items.indexOf(val), 1);
87 compare(assert, coll, items);
88 }
89 assert.equal(coll.length, numInitialItems,
90 "All inserted items should be removed");
92 // Remove the items we just removed. coll should be unchanged.
93 for (let i = 0; i < numInsertions; i++)
94 coll.remove(i);
95 compare(assert, coll, items);
97 // Test add and remove([val1, val2]).
98 let newItems = [0, 1];
99 coll.add(newItems);
100 compare(assert, coll, isBacking ? items : items.concat(newItems));
101 coll.remove(newItems);
102 compare(assert, coll, items);
103 assert.equal(coll.length, numInitialItems,
104 "All inserted items should be removed");
105 }
107 // Asserts that the items in coll are the items of array.
108 function compare(assert, coll, array) {
109 assert.equal(coll.length, array.length,
110 "Collection length should be correct");
111 let numItems = 0;
112 for (let item in coll) {
113 assert.equal(item, array[numItems], "Items should be equal");
114 numItems++;
115 }
116 assert.equal(numItems, array.length,
117 "Number of items in iteration should be correct");
118 }
120 // Returns a new object with a collection property named "coll". backingArray,
121 // if defined, will create the collection with that backing array.
122 function makeObjWithCollProp(backingArray) {
123 let obj = {};
124 collection.addCollectionProperty(obj, "coll", backingArray);
125 return obj;
126 }
128 require("sdk/test").run(exports);
