Current File : //proc/self/root/home/infra/fusioninventory/lib/lazy.js-0.5.1/spec/memoize_spec.min.js
describe("memoize",function(){it("only iterates as far as it needs",function(){var visited=[];var sequence=Lazy([1,2,3,4,5]).map(function(x){visited.push(x);return x});var memoized=sequence.memoize();expect(memoized.get(0)).toEqual(1);expect(visited).toEqual([1]);expect(memoized.get(1)).toEqual(2);expect(visited).toEqual([1,2]);expect(memoized.take(3)).toComprise([1,2,3]);expect(visited).toEqual([1,2,3]);visited.length=0;expect(memoized.take(2)).toComprise([1,2]);expect(visited).toEqual([]);visited.length=0;expect(memoized.take(4)).toComprise([1,2,3,4]);expect(visited).toEqual([4]);visited.length=0;expect(memoized).toComprise([1,2,3,4,5]);expect(visited).toEqual([5]);visited.length=0;expect(memoized.map(Lazy.identity)).toComprise([1,2,3,4,5]);expect(visited).toEqual([])});it("works just fine on empty sequences",function(){expect(Lazy([]).memoize()).toComprise([])});it("works just fine on generated sequences",function(){var numbers=Lazy.generate(Math.random).memoize().take(3)})});
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