Current File : //proc/self/root/home/infra/BACKUP-FUSIONINVENTORY/lib/lazy.js-0.5.1/spec/es6_spec.min.js
describe("support for ES6 features",function(){describe("iterables",function(){it("supports the iterable interface",function(){var sequence=Lazy([1.1,1.9,2.5]).map(Math.round);var result=[];for(var x of sequence){result.push(x)}expect(result).toEqual([1,2,3])});it("preserves laziness",function(){var sideEffects=[];var sequence=Lazy([1,2,3]).map(function(x){sideEffects.push("foo");return x});var result=[];for(var e of sequence.take(2)){result.push(e)}expect(result).toEqual([1,2]);expect(sideEffects).toEqual(["foo","foo"])})});describe("generators",function(){var sequence=Lazy(function*(){yield 1;yield 2;yield 3});it("can wrap generators as sequences",function(){expect(sequence).toBeInstanceOf(Lazy.Sequence)});it("can iterate over the generated output",function(){expect(sequence).toComprise([1,2,3])});it("can map, etc. over the result, same as any other sequence",function(){sequence=sequence.map(increment);expect(sequence).toComprise([2,3,4])})});describe("sets",function(){var sequence=Lazy(new Set([1,2,2,3,3,3]));it("can wrap sets",function(){expect(sequence).toComprise([1,2,3])});it("includes index in iteration",function(){var indexes=[];sequence.each(function(e,i){indexes.push(i)});expect(indexes).toEqual([0,1,2])})});describe("maps",function(){it("can wrap maps",function(){var sequence=Lazy(new Map([["foo",1],["bar",2]]));expect(sequence).toComprise({foo:1,bar:2})});it("provides keys",function(){var sequence=Lazy(new Map([["foo",1],["bar",2]]));expect(sequence.keys()).toComprise(["foo","bar"])})})});
Mini Shell