72     collection.add({id: 2});
100     collection2.add(model.attributes);
127     collection.add([
150   QUnit.test('add', function(assert) {
155     otherCol.add(e);
156     otherCol.on('add', function() {
159     col.on('add', function(model, collection, options){
163     col.add(e, {amazing: true});
176     atCol.add(e, {at: 1});
183     coll.on('add', function(){
186     coll.add([undefined, f, g]);
189     coll.add(new Array(4));
194   QUnit.test('add multiple models', function(assert) {
197     collection.add([{at: 2}, {at: 3}, {at: 4}, {at: 5}, {at: 6}, {at: 7}, {at: 8}], {at: 2});
203   QUnit.test('add; at should have preference over comparator', function(assert) {
212     collection.add(new Backbone.Model({id: 1}), {at: 1});
217   QUnit.test('add; at should add to the end if the index is out of bounds', function(assert) {
220     collection.add(new Backbone.Model({id: 1}), {at: 5});
225   QUnit.test("can't add model to collection twice", function(assert) {
230   QUnit.test("can't add different model with same id to collection twice", function(assert) {
234     collection.add({id: 101});
241     collection.add([{id: 1, name: 'Moe'}, {id: 2, name: 'Curly'}, {id: 3, name: 'Larry'}]);
242     collection.add({id: 1, name: 'Moses'});
244     collection.add({id: 1, name: 'Moses'}, {merge: true});
246     collection.add({id: 1, name: 'Tim'}, {merge: true, silent: true});
250   QUnit.test('add model to multiple collections', function(assert) {
254     m.on('add', function(model, collection) {
264     col1.on('add', function(model, collection) {
269     col2.on('add', function(model, collection) {
273     col1.add(m);
275     col2.add(m);
279   QUnit.test('add model with parse', function(assert) {
290     collection.add({value: 1}, {parse: true});
294   QUnit.test('add with parse and merge', function(assert) {
302     collection.add({id: 1});
303     collection.add({model: {id: 1, name: 'Alf'}}, {parse: true, merge: true});
307   QUnit.test('add model to collection with sort()-style comparator', function(assert) {
316     collection.add(tom);
317     collection.add(rob);
318     collection.add(tim);
333     collection.add([{id: 1}, {id: 2}, {id: 3}]);
370   QUnit.test('add and remove return values', function(assert) {
380     var list = collection.add([{id: 2}, {id: 4}], {validate: true});
386     list = collection.add([{id: 3}, {id: 6}], {validate: true});
391     var result = collection.add({id: 6});
864   QUnit.test('add does not alter arguments', function(assert) {
868     new Backbone.Collection().add(models);
913     collection.add([{id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}], {validate: true});
925     collection.add([model, {id: 2}], {validate: true});
937     collection.add([model, model]);
939     collection.add([{id: 1}, {id: 1}]);
1051     collection.on('add', function(){ assert.ok(true); });
1055   QUnit.test('#1448 - add sorts collection after merge.', function(assert) {
1062     collection.add({id: 1, x: 3}, {merge: true});
1087     collection.on('add', function() {
1090     collection.add({}, {at: 0});
1093   QUnit.test('#1638 - `sort` during `add` triggers correctly.', function(assert) {
1097     collection.on('add', function(model) {
1102     collection.add([{id: 1, x: 1}, {id: 2, x: 2}]);
1121   QUnit.test("`sort` shouldn't always fire on `add`", function(assert) {
1127     collection.add([]);
1128     collection.add({id: 1});
1129     collection.add([{id: 2}, {id: 3}]);
1130     collection.add({id: 4});
1195     // Test add/change/remove events
1196     collection.on('add', function(model) {
1210     // add: false doesn't add any models
1211     collection.set([m1, m2, m3], {add: false});
1218     // add: false, remove: false only merges existing models
1219     collection.set([m1, {id: 2, a: 0}, m3, {id: 4}], {add: false, remove: false});
1223     // default options add/remove/merge as appropriate
1351     collection.set([three, two, one, {id: 4}], {add: false});
1377     collection.set([{_id: 1, a: 1}], {add: false});
1387     new Collection().add({id: 1}, {sort: false});
1442   QUnit.test('`add` only `sort`s when necessary', function(assert) {
1448     collection.add({id: 4}); // do sort, new model
1449     collection.add({id: 1, a: 1}, {merge: true}); // do sort, comparator change
1450     collection.add({id: 1, b: 1}, {merge: true}); // don't sort, no comparator change
1451     collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no comparator change
1452     collection.add(collection.models); // don't sort, nothing new
1453     collection.add(collection.models, {merge: true}); // don't sort
1456   QUnit.test('`add` only `sort`s when necessary with comparator function', function(assert) {
1464     collection.add({id: 4}); // do sort, new model
1465     collection.add({id: 1, a: 1}, {merge: true}); // do sort, model change
1466     collection.add({id: 1, b: 1}, {merge: true}); // do sort, model change
1467     collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no model change
1468     collection.add(collection.models); // don't sort, nothing new
1469     collection.add(collection.models, {merge: true}); // don't sort
1502   QUnit.test('`add` overrides `set` flags', function(assert) {
1504     collection.once('add', function(model, coll, options) {
1505       coll.add({id: 2}, options);
1608     var calls = {add: 0, remove: 0};  property in AnonymousFunctionf8dce19ebe00.calls
1614         calls.add++;
1631     var model = collection.add({id: 1});
1634     assert.equal(calls.add, 1);
1638   QUnit.test('Do not allow duplicate models to be `add`ed or `set`', function(assert) {
1641     collection.add([{id: 1}, {id: 1}]);
1650   QUnit.test('#3020: #set with {add: false} should not throw.', function(assert) {
1653     collection.set([{id: 1}], {add: false});
1756     c2.add(m);
1764     collection.on('add', function(model, coll, options) {
1767     collection.add([{val: 1}, {val: 2}, {val: 3}], {at: 1});
1768     collection.add({val: 5}, {at: 10});
1774     collection.on('add', function(model, coll, options) {
1777     collection.add([{at: 1}, {at: 2}]);
1816   QUnit.test('add supports negative indexes', function(assert) {
1819     collection.add([{id: 2}, {id: 3}], {at: -1});
1820     collection.add([{id: 2.5}], {at: -2});
1821     collection.add([{id: 0.5}], {at: -6});
1828     collection.add([{id: 3}], {at: '1'});
1836     collection.add([{id: 1}, {id: 2}, {id: 3}]);