/node_modules/backbone/test/collection.js
JavaScript | 568 lines | 513 code | 55 blank | 0 comment | 24 complexity | 9778736e23154d5f59d1db4cdfcc8a20 MD5 | raw file
Possible License(s): MIT
- $(document).ready(function() {
- var lastRequest = null;
- var sync = Backbone.sync;
- var a, b, c, d, e, col, otherCol;
- module("Backbone.Collection", {
- setup: function() {
- a = new Backbone.Model({id: 3, label: 'a'});
- b = new Backbone.Model({id: 2, label: 'b'});
- c = new Backbone.Model({id: 1, label: 'c'});
- d = new Backbone.Model({id: 0, label: 'd'});
- e = null;
- col = new Backbone.Collection([a,b,c,d]);
- otherCol = new Backbone.Collection();
- Backbone.sync = function(method, model, options) {
- lastRequest = {
- method: method,
- model: model,
- options: options
- };
- };
- },
- teardown: function() {
- Backbone.sync = sync;
- }
- });
- test("Collection: new and sort", function() {
- equal(col.first(), a, "a should be first");
- equal(col.last(), d, "d should be last");
- col.comparator = function(a, b) {
- return a.id > b.id ? -1 : 1;
- };
- col.sort();
- equal(col.first(), a, "a should be first");
- equal(col.last(), d, "d should be last");
- col.comparator = function(model) { return model.id; };
- col.sort();
- equal(col.first(), d, "d should be first");
- equal(col.last(), a, "a should be last");
- equal(col.length, 4);
- });
- test("Collection: get, getByCid", function() {
- equal(col.get(0), d);
- equal(col.get(2), b);
- equal(col.getByCid(col.first().cid), col.first());
- });
- test("Collection: get with non-default ids", function() {
- var col = new Backbone.Collection();
- var MongoModel = Backbone.Model.extend({
- idAttribute: '_id'
- });
- var model = new MongoModel({_id: 100});
- col.push(model);
- equal(col.get(100), model);
- model.set({_id: 101});
- equal(col.get(101), model);
- });
- test("Collection: update index when id changes", function() {
- var col = new Backbone.Collection();
- col.add([
- {id : 0, name : 'one'},
- {id : 1, name : 'two'}
- ]);
- var one = col.get(0);
- equal(one.get('name'), 'one');
- one.set({id : 101});
- equal(col.get(0), null);
- equal(col.get(101).get('name'), 'one');
- });
- test("Collection: at", function() {
- equal(col.at(2), c);
- });
- test("Collection: pluck", function() {
- equal(col.pluck('label').join(' '), 'a b c d');
- });
- test("Collection: add", function() {
- var added, opts, secondAdded;
- added = opts = secondAdded = null;
- e = new Backbone.Model({id: 10, label : 'e'});
- otherCol.add(e);
- otherCol.bind('add', function() {
- secondAdded = true;
- });
- col.bind('add', function(model, collection, options){
- added = model.get('label');
- equal(options.index, 4);
- opts = options;
- });
- col.add(e, {amazing: true});
- equal(added, 'e');
- equal(col.length, 5);
- equal(col.last(), e);
- equal(otherCol.length, 1);
- equal(secondAdded, null);
- ok(opts.amazing);
- var f = new Backbone.Model({id: 20, label : 'f'});
- var g = new Backbone.Model({id: 21, label : 'g'});
- var h = new Backbone.Model({id: 22, label : 'h'});
- var atCol = new Backbone.Collection([f, g, h]);
- equal(atCol.length, 3);
- atCol.add(e, {at: 1});
- equal(atCol.length, 4);
- equal(atCol.at(1), e);
- equal(atCol.last(), h);
- });
- test("Collection: add multiple models", function() {
- var col = new Backbone.Collection([{at: 0}, {at: 1}, {at: 9}]);
- col.add([{at: 2}, {at: 3}, {at: 4}, {at: 5}, {at: 6}, {at: 7}, {at: 8}], {at: 2});
- for (var i = 0; i <= 5; i++) {
- equal(col.at(i).get('at'), i);
- }
- });
- test("Collection: can't add model to collection twice", function() {
- var col = new Backbone.Collection([{id: 1}, {id: 2}, {id: 1}, {id: 2}, {id: 3}]);
- equal(col.pluck('id').join(' '), '1 2 3');
- });
- test("Collection: can't add different model with same id to collection twice", function() {
- var col = new Backbone.Collection;
- col.unshift({id: 101});
- col.add({id: 101});
- equal(col.length, 1);
- });
- test("Collection: add model to multiple collections", function() {
- var counter = 0;
- var e = new Backbone.Model({id: 10, label : 'e'});
- e.bind('add', function(model, collection) {
- counter++;
- equal(e, model);
- if (counter > 1) {
- equal(collection, colF);
- } else {
- equal(collection, colE);
- }
- });
- var colE = new Backbone.Collection([]);
- colE.bind('add', function(model, collection) {
- equal(e, model);
- equal(colE, collection);
- });
- var colF = new Backbone.Collection([]);
- colF.bind('add', function(model, collection) {
- equal(e, model);
- equal(colF, collection);
- });
- colE.add(e);
- equal(e.collection, colE);
- colF.add(e);
- equal(e.collection, colE);
- });
- test("Collection: add model with parse", function() {
- var Model = Backbone.Model.extend({
- parse: function(obj) {
- obj.value += 1;
- return obj;
- }
- });
- var Col = Backbone.Collection.extend({model: Model});
- var col = new Col;
- col.add({value: 1}, {parse: true});
- equal(col.at(0).get('value'), 2);
- });
- test("Collection: add model to collection with sort()-style comparator", function() {
- var col = new Backbone.Collection;
- col.comparator = function(a, b) {
- return a.get('name') < b.get('name') ? -1 : 1;
- };
- var tom = new Backbone.Model({name: 'Tom'});
- var rob = new Backbone.Model({name: 'Rob'});
- var tim = new Backbone.Model({name: 'Tim'});
- col.add(tom);
- col.add(rob);
- col.add(tim);
- equal(col.indexOf(rob), 0);
- equal(col.indexOf(tim), 1);
- equal(col.indexOf(tom), 2);
- });
- test("Collection: comparator that depends on `this`", function() {
- var col = new Backbone.Collection;
- col.negative = function(num) {
- return -num;
- };
- col.comparator = function(a) {
- return this.negative(a.id);
- };
- col.add([{id: 1}, {id: 2}, {id: 3}]);
- equal(col.pluck('id').join(' '), '3 2 1');
- });
- test("Collection: remove", function() {
- var removed = null;
- var otherRemoved = null;
- col.bind('remove', function(model, col, options) {
- removed = model.get('label');
- equal(options.index, 3);
- });
- otherCol.bind('remove', function(model, col, options) {
- otherRemoved = true;
- });
- col.remove(d);
- equal(removed, 'd');
- equal(col.length, 3);
- equal(col.first(), a);
- equal(otherRemoved, null);
- });
- test("Collection: shift and pop", function() {
- var col = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);
- equal(col.shift().get('a'), 'a');
- equal(col.pop().get('c'), 'c');
- });
- test("Collection: events are unbound on remove", function() {
- var counter = 0;
- var dj = new Backbone.Model();
- var emcees = new Backbone.Collection([dj]);
- emcees.bind('change', function(){ counter++; });
- dj.set({name : 'Kool'});
- equal(counter, 1);
- emcees.reset([]);
- equal(dj.collection, undefined);
- dj.set({name : 'Shadow'});
- equal(counter, 1);
- });
- test("Collection: remove in multiple collections", function() {
- var modelData = {
- id : 5,
- title : 'Othello'
- };
- var passed = false;
- var e = new Backbone.Model(modelData);
- var f = new Backbone.Model(modelData);
- f.bind('remove', function() {
- passed = true;
- });
- var colE = new Backbone.Collection([e]);
- var colF = new Backbone.Collection([f]);
- ok(e != f);
- ok(colE.length == 1);
- ok(colF.length == 1);
- colE.remove(e);
- equal(passed, false);
- ok(colE.length == 0);
- colF.remove(e);
- ok(colF.length == 0);
- equal(passed, true);
- });
- test("Collection: remove same model in multiple collection", function() {
- var counter = 0;
- var e = new Backbone.Model({id: 5, title: 'Othello'});
- e.bind('remove', function(model, collection) {
- counter++;
- equal(e, model);
- if (counter > 1) {
- equal(collection, colE);
- } else {
- equal(collection, colF);
- }
- });
- var colE = new Backbone.Collection([e]);
- colE.bind('remove', function(model, collection) {
- equal(e, model);
- equal(colE, collection);
- });
- var colF = new Backbone.Collection([e]);
- colF.bind('remove', function(model, collection) {
- equal(e, model);
- equal(colF, collection);
- });
- equal(colE, e.collection);
- colF.remove(e);
- ok(colF.length == 0);
- ok(colE.length == 1);
- equal(counter, 1);
- equal(colE, e.collection);
- colE.remove(e);
- equal(null, e.collection);
- ok(colE.length == 0);
- equal(counter, 2);
- });
- test("Collection: model destroy removes from all collections", function() {
- var e = new Backbone.Model({id: 5, title: 'Othello'});
- e.sync = function(method, model, options) { options.success({}); };
- var colE = new Backbone.Collection([e]);
- var colF = new Backbone.Collection([e]);
- e.destroy();
- ok(colE.length == 0);
- ok(colF.length == 0);
- equal(undefined, e.collection);
- });
- test("Colllection: non-persisted model destroy removes from all collections", function() {
- var e = new Backbone.Model({title: 'Othello'});
- e.sync = function(method, model, options) { throw "should not be called"; };
- var colE = new Backbone.Collection([e]);
- var colF = new Backbone.Collection([e]);
- e.destroy();
- ok(colE.length == 0);
- ok(colF.length == 0);
- equal(undefined, e.collection);
- });
- test("Collection: fetch", function() {
- col.fetch();
- equal(lastRequest.method, 'read');
- equal(lastRequest.model, col);
- equal(lastRequest.options.parse, true);
- col.fetch({parse: false});
- equal(lastRequest.options.parse, false);
- });
- test("Collection: create", function() {
- var model = col.create({label: 'f'}, {wait: true});
- equal(lastRequest.method, 'create');
- equal(lastRequest.model, model);
- equal(model.get('label'), 'f');
- equal(model.collection, col);
- });
- test("Collection: create enforces validation", function() {
- var ValidatingModel = Backbone.Model.extend({
- validate: function(attrs) {
- return "fail";
- }
- });
- var ValidatingCollection = Backbone.Collection.extend({
- model: ValidatingModel
- });
- var col = new ValidatingCollection();
- equal(col.create({"foo":"bar"}), false);
- });
- test("Collection: a failing create runs the error callback", function() {
- var ValidatingModel = Backbone.Model.extend({
- validate: function(attrs) {
- return "fail";
- }
- });
- var ValidatingCollection = Backbone.Collection.extend({
- model: ValidatingModel
- });
- var flag = false;
- var callback = function(model, error) { flag = true; };
- var col = new ValidatingCollection();
- col.create({"foo":"bar"}, { error: callback });
- equal(flag, true);
- });
- test("collection: initialize", function() {
- var Collection = Backbone.Collection.extend({
- initialize: function() {
- this.one = 1;
- }
- });
- var coll = new Collection;
- equal(coll.one, 1);
- });
- test("Collection: toJSON", function() {
- equal(JSON.stringify(col), '[{"id":3,"label":"a"},{"id":2,"label":"b"},{"id":1,"label":"c"},{"id":0,"label":"d"}]');
- });
- test("Collection: where", function() {
- var coll = new Backbone.Collection([
- {a: 1},
- {a: 1},
- {a: 1, b: 2},
- {a: 2, b: 2},
- {a: 3}
- ]);
- equal(coll.where({a: 1}).length, 3);
- equal(coll.where({a: 2}).length, 1);
- equal(coll.where({a: 3}).length, 1);
- equal(coll.where({b: 1}).length, 0);
- equal(coll.where({b: 2}).length, 2);
- equal(coll.where({a: 1, b: 2}).length, 1);
- });
- test("Collection: Underscore methods", function() {
- equal(col.map(function(model){ return model.get('label'); }).join(' '), 'a b c d');
- equal(col.any(function(model){ return model.id === 100; }), false);
- equal(col.any(function(model){ return model.id === 0; }), true);
- equal(col.indexOf(b), 1);
- equal(col.size(), 4);
- equal(col.rest().length, 3);
- ok(!_.include(col.rest()), a);
- ok(!_.include(col.rest()), d);
- ok(!col.isEmpty());
- ok(!_.include(col.without(d)), d);
- equal(col.max(function(model){ return model.id; }).id, 3);
- equal(col.min(function(model){ return model.id; }).id, 0);
- same(col.chain()
- .filter(function(o){ return o.id % 2 === 0; })
- .map(function(o){ return o.id * 2; })
- .value(),
- [4, 0]);
- });
- test("Collection: reset", function() {
- var resetCount = 0;
- var models = col.models;
- col.bind('reset', function() { resetCount += 1; });
- col.reset([]);
- equal(resetCount, 1);
- equal(col.length, 0);
- equal(col.last(), null);
- col.reset(models);
- equal(resetCount, 2);
- equal(col.length, 4);
- equal(col.last(), d);
- col.reset(_.map(models, function(m){ return m.attributes; }));
- equal(resetCount, 3);
- equal(col.length, 4);
- ok(col.last() !== d);
- ok(_.isEqual(col.last().attributes, d.attributes));
- });
- test("Collection: reset passes caller options", function() {
- var Model = Backbone.Model.extend({
- initialize: function(attrs, options) {
- this.model_parameter = options.model_parameter;
- }
- });
- var col = new (Backbone.Collection.extend({ model: Model }))();
- col.reset([{ astring: "green", anumber: 1 }, { astring: "blue", anumber: 2 }], { model_parameter: 'model parameter' });
- equal(col.length, 2);
- col.each(function(model) {
- equal(model.model_parameter, 'model parameter');
- });
- });
- test("Collection: trigger custom events on models", function() {
- var fired = null;
- a.bind("custom", function() { fired = true; });
- a.trigger("custom");
- equal(fired, true);
- });
- test("Collection: add does not alter arguments", function(){
- var attrs = {};
- var models = [attrs];
- new Backbone.Collection().add(models);
- equal(models.length, 1);
- ok(attrs === models[0]);
- });
- test("#714: access `model.collection` in a brand new model.", 2, function() {
- var col = new Backbone.Collection;
- var Model = Backbone.Model.extend({
- set: function(attrs) {
- equal(attrs.prop, 'value');
- equal(this.collection, col);
- return this;
- }
- });
- col.model = Model;
- col.create({prop: 'value'});
- });
- test("#574, remove its own reference to the .models array.", function() {
- var col = new Backbone.Collection([
- {id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}
- ]);
- equal(col.length, 6);
- col.remove(col.models);
- equal(col.length, 0);
- });
- test("#861, adding models to a collection which do not pass validation", function() {
- raises(function() {
- var Model = Backbone.Model.extend({
- validate: function(attrs) {
- if (attrs.id == 3) return "id can't be 3";
- }
- });
- var Collection = Backbone.Collection.extend({
- model: Model
- });
- var col = new Collection;
- col.add([{id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}]);
- }, "Can't add an invalid model to a collection");
- });
- test("Collection: index with comparator", function() {
- expect(4);
- var counter = 0;
- var col = new Backbone.Collection([{id: 2}, {id: 4}], {
- comparator: function(model){ return model.id; }
- }).on('add', function(model, colleciton, options){
- if (model.id == 1) {
- equal(options.index, 0);
- equal(counter++, 0);
- }
- if (model.id == 3) {
- equal(options.index, 2);
- equal(counter++, 1);
- }
- });
- col.add([{id: 3}, {id: 1}]);
- });
- test("Collection: throwing during add leaves consistent state", function() {
- expect(4);
- var col = new Backbone.Collection();
- col.bind('test', function() { ok(false); });
- col.model = Backbone.Model.extend({
- validate: function(attrs){ if (!attrs.valid) return 'invalid'; }
- });
- var model = new col.model({id: 1, valid: true});
- raises(function() { col.add([model, {id: 2}]); });
- model.trigger('test');
- ok(!col.getByCid(model.cid));
- ok(!col.get(1));
- equal(col.length, 0);
- });
- test("Collection: multiple copies of the same model", function() {
- var col = new Backbone.Collection();
- var model = new Backbone.Model();
- col.add([model, model]);
- equal(col.length, 1);
- col.add([{id: 1}, {id: 1}]);
- equal(col.length, 2);
- equal(col.last().id, 1);
- });
- test("#964 - collection.get return in consistent", function() {
- var c = new Backbone.Collection();
- ok(c.get(null) === undefined);
- ok(c.get() === undefined);
- });
- test("#1112 - passing options.model sets collection.model", function() {
- var Model = Backbone.Model.extend({});
- var c = new Backbone.Collection([{id: 1}], {model: Model});
- ok(c.model === Model);
- ok(c.at(0) instanceof Model);
- });
- });