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describe("groupBy",function(){ensureLaziness(function(){Lazy(people).groupBy(Person.getGender)});it("groups the collection by a specified selector function",function(){var byGender=Lazy(people).groupBy(Person.getGender).toArray();expect(byGender).toEqual([["M",[david,adam,daniel]],["F",[mary,lauren,happy]]])});it("groups the collection by a specified selector function for async sequences",function(){var byGender={};Lazy(people).async().groupBy(Person.getGender).toObject().onComplete(function(result){populate(byGender,result)});waitsFor(toBePopulated(byGender));runs(function(){expect(byGender).toEqual({M:[david,adam,daniel],F:[mary,lauren,happy]})})});testAllSequenceTypes("uses a 'pluck'-style callback when a string is passed instead of a function",[{foo:1,bar:1},{foo:2,bar:2},{foo:1,bar:3}],function(sequence){expect(sequence.groupBy("foo").toObject()).toEqual({1:[{foo:1,bar:1},{foo:1,bar:3}],2:[{foo:2,bar:2}]})})});
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