Files
backbone/test/collection.js
2012-06-15 11:30:49 -04:00

645 lines
19 KiB
JavaScript

$(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", 7, 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", 3, 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", 2, 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", 3, 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", 1, function() {
equal(col.at(2), c);
});
test("Collection: pluck", 1, function() {
equal(col.pluck('label').join(' '), 'a b c d');
});
test("Collection: add", 11, function() {
var added, opts, secondAdded;
added = opts = secondAdded = null;
e = new Backbone.Model({id: 10, label : 'e'});
otherCol.add(e);
otherCol.on('add', function() {
secondAdded = true;
});
col.on('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", 6, 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: add; at should have preference over comparator", 1, function() {
var Col = Backbone.Collection.extend({
comparator: function(a,b) {
return a.id > b.id ? -1 : 1;
}
});
var col = new Col([{id: 2}, {id: 3}]);
col.add(new Backbone.Model({id: 1}), {at: 1});
equal(col.pluck('id').join(' '), '3 1 2');
});
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", 1, function() {
var col = new Backbone.Collection;
col.unshift({id: 101});
col.add({id: 101});
equal(col.length, 1);
});
test("Collection: merge in duplicate models with {merge: true}", 3, function() {
var col = new Backbone.Collection;
col.add([{id: 1, name: 'Moe'}, {id: 2, name: 'Curly'}, {id: 3, name: 'Larry'}]);
col.add({id: 1, name: 'Moses'});
equal(col.first().get('name'), 'Moe');
col.add({id: 1, name: 'Moses'}, {merge: true});
equal(col.first().get('name'), 'Moses');
col.add({id: 1, name: 'Tim'}, {merge: true, silent: true});
equal(col.first().get('name'), 'Tim');
});
test("Collection: add model to multiple collections", 10, function() {
var counter = 0;
var e = new Backbone.Model({id: 10, label : 'e'});
e.on('add', function(model, collection) {
counter++;
equal(e, model);
if (counter > 1) {
equal(collection, colF);
} else {
equal(collection, colE);
}
});
var colE = new Backbone.Collection([]);
colE.on('add', function(model, collection) {
equal(e, model);
equal(colE, collection);
});
var colF = new Backbone.Collection([]);
colF.on('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", 1, 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", 3, 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`", 1, 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", 5, function() {
var removed = null;
var otherRemoved = null;
col.on('remove', function(model, col, options) {
removed = model.get('label');
equal(options.index, 3);
});
otherCol.on('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", 2, 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: slice", 2, function() {
var col = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);
var array = col.slice(1, 3);
equal(array.length, 2);
equal(array[0].get('b'), 'b');
});
test("Collection: events are unbound on remove", 3, function() {
var counter = 0;
var dj = new Backbone.Model();
var emcees = new Backbone.Collection([dj]);
emcees.on('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", 7, function() {
var modelData = {
id : 5,
title : 'Othello'
};
var passed = false;
var e = new Backbone.Model(modelData);
var f = new Backbone.Model(modelData);
f.on('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", 16, function() {
var counter = 0;
var e = new Backbone.Model({id: 5, title: 'Othello'});
e.on('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.on('remove', function(model, collection) {
equal(e, model);
equal(colE, collection);
});
var colF = new Backbone.Collection([e]);
colF.on('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", 3, 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", 3, 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", 4, 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", 4, 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", 1, 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", 1, 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", 1, function() {
var Collection = Backbone.Collection.extend({
initialize: function() {
this.one = 1;
}
});
var coll = new Collection;
equal(coll.one, 1);
});
test("Collection: toJSON", 1, function() {
equal(JSON.stringify(col), '[{"id":3,"label":"a"},{"id":2,"label":"b"},{"id":1,"label":"c"},{"id":0,"label":"d"}]');
});
test("Collection: where", 6, 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", 13, 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);
deepEqual(col.chain()
.filter(function(o){ return o.id % 2 === 0; })
.map(function(o){ return o.id * 2; })
.value(),
[4, 0]);
});
test("Collection: reset", 10, function() {
var resetCount = 0;
var models = col.models;
col.on('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", 3, 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", 1, function() {
var fired = null;
a.on("custom", function() { fired = true; });
a.trigger("custom");
equal(fired, true);
});
test("Collection: add does not alter arguments", 2, 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.", 2, 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", 1, 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}]);
}, function(e) {
return e.message === "Can't add an invalid model to a collection";
});
});
test("Collection: index with comparator", 4, function() {
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", 4, function() {
var col = new Backbone.Collection();
col.on('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", 3, 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 inconsistent", 2, function() {
var c = new Backbone.Collection();
ok(c.get(null) === undefined);
ok(c.get() === undefined);
});
test("#1112 - passing options.model sets collection.model", 2, 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);
});
test("null and undefined are invalid ids.", 2, function() {
var model = new Backbone.Model({id: 1});
var collection = new Backbone.Collection([model]);
model.set({id: null});
ok(!collection.get('null'));
model.set({id: 1});
model.set({id: undefined});
ok(!collection.get('undefined'));
});
test("Collection: falsy comparator", 4, function(){
var Col = Backbone.Collection.extend({
comparator: function(model){ return model.id; }
});
var col = new Col();
var colFalse = new Col(null, {comparator: false});
var colNull = new Col(null, {comparator: null});
var colUndefined = new Col(null, {comparator: undefined});
ok(col.comparator);
ok(!colFalse.comparator);
ok(!colNull.comparator);
ok(colUndefined.comparator);
});
test("#1355 - `options` is passed to success callbacks", 2, function(){
var m = new Backbone.Model({x:1});
var col = new Backbone.Collection();
var opts = {
success: function(collection, resp, options){
ok(options);
}
};
col.sync = m.sync = function( method, collection, options ){
options.success();
};
col.fetch(opts);
col.create(m, opts);
});
test('#1412 - Trigger "sync" event for fetch also', 1, function() {
var collection = new Backbone.Collection;
collection.sync = function(method, model, options) { options.success(); };
collection.on('sync', function() { ok(true); });
collection.fetch();
});
});