56     var models = [{a: 1}, {a: 2}, {a: 3}, {a: 4}];  property
406     var collection = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);  property
413     var collection = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);  property
696     var model = new Backbone.Model({a: 1});  property
699       {a: 1},  property
700       {a: 1, b: 2},  property
701       {a: 2, b: 2},  property
702       {a: 3}  property
704     assert.equal(coll.where({a: 1}).length, 3);  property
705     assert.equal(coll.where({a: 2}).length, 1);  property
706     assert.equal(coll.where({a: 3}).length, 1);  property
709     assert.equal(coll.where({a: 1, b: 2}).length, 1);  property
710     assert.equal(coll.findWhere({a: 1}), model);  property
711     assert.equal(coll.findWhere({a: 4}), void 0);  property
749     var model = new Backbone.Model({a: 4, b: 1, e: 3});  property
751       {a: 1, b: 1},  property
752       {a: 2, b: 1, c: 1},  property
753       {a: 3, b: 1},  property
756     assert.equal(coll.find({a: 0}), undefined);  property
757     assert.deepEqual(coll.find({a: 4}), model);  property
760     assert.equal(coll.filter({a: 0}), false);  property
761     assert.deepEqual(coll.filter({a: 4}), [model]);  property
762     assert.equal(coll.some({a: 0}), false);  property
763     assert.equal(coll.some({a: 1}), true);  property
764     assert.equal(coll.reject({a: 0}).length, 4);  property
765     assert.deepEqual(coll.reject({a: 4}), _.without(coll.models, model));  property
766     assert.equal(coll.every({a: 0}), false);  property
768     assert.deepEqual(coll.partition({a: 0})[0], []);  property
769     assert.deepEqual(coll.partition({a: 0})[1], coll.models);  property
770     assert.deepEqual(coll.partition({a: 4})[0], [model]);  property
771     assert.deepEqual(coll.partition({a: 4})[1], _.without(coll.models, model));  property
772     assert.deepEqual(coll.map({a: 2}), [false, true, false, false]);  property
776     assert.deepEqual(coll.countBy({a: 4}), {'false': 3, 'true': 1});  property
819     collection.reset({id: 1, a: 1});  property
1215     collection.set([m1, {id: 2, a: 1}], {merge: false});  property
1219     collection.set([m1, {id: 2, a: 0}, m3, {id: 4}], {add: false, remove: false});  property
1224     collection.set([{id: 2, a: 1}, m3]);  property
1377     collection.set([{_id: 1, a: 1}], {add: false});  property
1397     var res = {status: 'ok', data: [{id: 1}]};  property
1449     collection.add({id: 1, a: 1}, {merge: true}); // do sort, comparator change  property
1451     collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no comparator change  property
1465     collection.add({id: 1, a: 1}, {merge: true}); // do sort, model change  property
1467     collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no model change  property
1488     var opts = {a: 1, b: 2};  property