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| 1 | +///<reference path='../resources/jest.d.ts'/> |
| 2 | + |
| 3 | +import * as jasmineCheck from 'jasmine-check'; |
| 4 | +import * as t from 'transducers-js'; |
| 5 | +jasmineCheck.install(); |
| 6 | + |
| 7 | +import { List, Map, Set, Stack } from '../'; |
| 8 | + |
| 9 | +describe('Transformer Protocol', () => { |
| 10 | + |
| 11 | + it('transduces Stack without initial values', () => { |
| 12 | + let s = Stack.of(1, 2, 3, 4); |
| 13 | + let xform = t.comp( |
| 14 | + t.filter(x => x % 2 === 0), |
| 15 | + t.map(x => x + 1), |
| 16 | + ); |
| 17 | + let s2 = t.transduce(xform, Stack(), s); |
| 18 | + expect(s.toArray()).toEqual([1, 2, 3, 4]); |
| 19 | + expect(s2.toArray()).toEqual([5, 3]); |
| 20 | + }); |
| 21 | + |
| 22 | + it('transduces Stack with initial values', () => { |
| 23 | + let v1 = Stack.of(1, 2, 3); |
| 24 | + let v2 = Stack.of(4, 5, 6, 7); |
| 25 | + let xform = t.comp( |
| 26 | + t.filter(x => x % 2 === 0), |
| 27 | + t.map(x => x + 1), |
| 28 | + ); |
| 29 | + let r = t.transduce(xform, Stack(), v1, v2); |
| 30 | + expect(v1.toArray()).toEqual([1, 2, 3]); |
| 31 | + expect(v2.toArray()).toEqual([4, 5, 6, 7]); |
| 32 | + expect(r.toArray()).toEqual([7, 5, 1, 2, 3]); |
| 33 | + }); |
| 34 | + |
| 35 | + it('transduces List without initial values', () => { |
| 36 | + let v = List.of(1, 2, 3, 4); |
| 37 | + let xform = t.comp( |
| 38 | + t.filter(x => x % 2 === 0), |
| 39 | + t.map(x => x + 1), |
| 40 | + ); |
| 41 | + let r = t.transduce(xform, List(), v); |
| 42 | + expect(v.toArray()).toEqual([1, 2, 3, 4]); |
| 43 | + expect(r.toArray()).toEqual([3, 5]); |
| 44 | + }); |
| 45 | + |
| 46 | + it('transduces List with initial values', () => { |
| 47 | + let v1 = List.of(1, 2, 3); |
| 48 | + let v2 = List.of(4, 5, 6, 7); |
| 49 | + let xform = t.comp( |
| 50 | + t.filter(x => x % 2 === 0), |
| 51 | + t.map(x => x + 1), |
| 52 | + ); |
| 53 | + let r = t.transduce(xform, List(), v1, v2); |
| 54 | + expect(v1.toArray()).toEqual([1, 2, 3]); |
| 55 | + expect(v2.toArray()).toEqual([4, 5, 6, 7]); |
| 56 | + expect(r.toArray()).toEqual([1, 2, 3, 5, 7]); |
| 57 | + }); |
| 58 | + |
| 59 | + it('transduces Map without initial values', () => { |
| 60 | + let m1 = Map({a: 1, b: 2, c: 3, d: 4}); |
| 61 | + let xform = t.comp( |
| 62 | + t.filter(([k, v]) => v % 2 === 0), |
| 63 | + t.map(([k, v]) => [k, v * 2]), |
| 64 | + ); |
| 65 | + let m2 = t.transduce(xform, Map(), m1); |
| 66 | + expect(m1.toObject()).toEqual({a: 1, b: 2, c: 3, d: 4}); |
| 67 | + expect(m2.toObject()).toEqual({b: 4, d: 8}); |
| 68 | + }); |
| 69 | + |
| 70 | + it('transduces Map with initial values', () => { |
| 71 | + let m1 = Map({a: 1, b: 2, c: 3}); |
| 72 | + let m2 = Map({a: 4, b: 5}); |
| 73 | + let xform = t.comp( |
| 74 | + t.filter(([k, v]) => v % 2 === 0), |
| 75 | + t.map(([k, v]) => [k, v * 2]), |
| 76 | + ); |
| 77 | + let m3 = t.transduce(xform, Map(), m1, m2); |
| 78 | + expect(m1.toObject()).toEqual({a: 1, b: 2, c: 3}); |
| 79 | + expect(m2.toObject()).toEqual({a: 4, b: 5}); |
| 80 | + expect(m3.toObject()).toEqual({a: 8, b: 2, c: 3}); |
| 81 | + }); |
| 82 | + |
| 83 | + it('transduces Set without initial values', () => { |
| 84 | + let s1 = Set.of(1, 2, 3, 4); |
| 85 | + let xform = t.comp( |
| 86 | + t.filter(x => x % 2 === 0), |
| 87 | + t.map(x => x + 1), |
| 88 | + ); |
| 89 | + let s2 = t.transduce(xform, Set(), s1); |
| 90 | + expect(s1.toArray()).toEqual([1, 2, 3, 4]); |
| 91 | + expect(s2.toArray()).toEqual([3, 5]); |
| 92 | + }); |
| 93 | + |
| 94 | + it('transduces Set with initial values', () => { |
| 95 | + let s1 = Set.of(1, 2, 3, 4); |
| 96 | + let s2 = Set.of(2, 3, 4, 5, 6); |
| 97 | + let xform = t.comp( |
| 98 | + t.filter(x => x % 2 === 0), |
| 99 | + t.map(x => x + 1), |
| 100 | + ); |
| 101 | + let s3 = t.transduce(xform, Set(), s1, s2); |
| 102 | + expect(s1.toArray()).toEqual([1, 2, 3, 4]); |
| 103 | + expect(s2.toArray()).toEqual([2, 3, 4, 5, 6]); |
| 104 | + expect(s3.toArray()).toEqual([1, 2, 3, 4, 5, 7]); |
| 105 | + }); |
| 106 | + |
| 107 | +}); |
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