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| 1 <!DOCTYPE html> | |
| 2 <!-- | |
| 3 Copyright (c) 2014 The Chromium Authors. All rights reserved. | |
| 4 Use of this source code is governed by a BSD-style license that can be | |
| 5 found in the LICENSE file. | |
| 6 --> | |
| 7 <link rel="import" href="/tracing/base/iteration_helpers.html"> | |
| 8 <script> | |
| 9 'use strict'; | |
| 10 | |
| 11 tr.b.unittest.testSuite(function() { | |
| 12 const compareArrays = tr.b.compareArrays; | |
| 13 const getOnlyElement = tr.b.getOnlyElement; | |
| 14 const getFirstElement = tr.b.getFirstElement; | |
| 15 | |
| 16 test('setsEqual', function() { | |
| 17 assert.isTrue(tr.b.setsEqual(new Set(), new Set())); | |
| 18 assert.isTrue(tr.b.setsEqual(new Set(['a']), new Set(['a']))); | |
| 19 assert.isFalse(tr.b.setsEqual(new Set(), undefined)); | |
| 20 assert.isFalse(tr.b.setsEqual(new Set(), new Set(['a']))); | |
| 21 assert.isFalse(tr.b.setsEqual(new Set(['a']), new Set(['b']))); | |
| 22 }); | |
| 23 | |
| 24 test('compareArrays', function() { | |
| 25 function cmp(x, y) { | |
| 26 assert.isDefined(x); | |
| 27 assert.isDefined(y); | |
| 28 return x - y; | |
| 29 } | |
| 30 | |
| 31 assert.isBelow(compareArrays([1], [2], cmp), 0); | |
| 32 assert.isAbove(compareArrays([2], [1], cmp), 0); | |
| 33 | |
| 34 assert.isBelow(compareArrays([1], [1, 2], cmp), 0); | |
| 35 assert.isAbove(compareArrays([1, 2], [1], cmp), 0); | |
| 36 | |
| 37 assert.isBelow(compareArrays([], [1], cmp), 0); | |
| 38 assert.isAbove(compareArrays([1], [], cmp), 0); | |
| 39 | |
| 40 assert.isAbove(compareArrays([2], [1], cmp), 0); | |
| 41 | |
| 42 assert.strictEqual(compareArrays([], [], cmp), 0); | |
| 43 assert.strictEqual(compareArrays([1], [1], cmp), 0); | |
| 44 }); | |
| 45 | |
| 46 test('getOnlyElement_throwsIfEmpty', function() { | |
| 47 assert.throws(() => getOnlyElement([]), | |
| 48 'getOnlyElement was passed an empty iterable.'); | |
| 49 }); | |
| 50 | |
| 51 test('getOnlyElement_oneItem', function() { | |
| 52 assert.strictEqual(getOnlyElement([1]), 1); | |
| 53 }); | |
| 54 | |
| 55 test('getOnlyElement_twoItems', function() { | |
| 56 assert.throws(() => getOnlyElement([1, 2]), | |
| 57 'getOnlyElement was passed an iterable with multiple elements.'); | |
| 58 }); | |
| 59 | |
| 60 test('getFirstElement_throwsIfEmpty', function() { | |
| 61 assert.throws(() => getFirstElement([]), | |
| 62 'getFirstElement was passed an empty iterable.'); | |
| 63 }); | |
| 64 | |
| 65 test('getFirstElement_oneItem', function() { | |
| 66 assert.strictEqual(getFirstElement([1]), 1); | |
| 67 }); | |
| 68 | |
| 69 test('getFirstElement_twoItems', function() { | |
| 70 assert.strictEqual(getFirstElement([1, 2]), 1); | |
| 71 }); | |
| 72 | |
| 73 test('groupIntoMap', function() { | |
| 74 // Empty array | |
| 75 let srcArray = []; | |
| 76 const fn = function(curr) { return (curr % 2); }; | |
| 77 const dstDict = {}; | |
| 78 | |
| 79 assert.deepEqual(tr.b.groupIntoMap(srcArray, fn), dstDict); | |
| 80 | |
| 81 // Non-empty array | |
| 82 srcArray = [0, 1, 2, 3, 4, 5, 6]; | |
| 83 const dstMap = new Map([ | |
| 84 [0, [0, 2, 4, 6]], | |
| 85 [1, [1, 3, 5]] | |
| 86 ]); | |
| 87 | |
| 88 assert.deepEqual(tr.b.groupIntoMap(srcArray, fn), dstMap); | |
| 89 }); | |
| 90 | |
| 91 test('inPlaceFilter_simple', function() { | |
| 92 const someThisArg = {}; | |
| 93 const list = [1, 2, 3, 4]; | |
| 94 tr.b.inPlaceFilter(list, function(item) { | |
| 95 assert.strictEqual(this, someThisArg); | |
| 96 return item % 2 === 0; | |
| 97 }, someThisArg); | |
| 98 assert.deepEqual(list, [2, 4]); | |
| 99 }); | |
| 100 | |
| 101 test('invertArrayOfDicts_defaultGetter', function() { | |
| 102 const array = [ | |
| 103 {a: 6, b: 5}, | |
| 104 undefined, | |
| 105 {a: 4, b: 3, c: 2}, | |
| 106 {b: 1, c: 0} | |
| 107 ]; | |
| 108 const dict = tr.b.invertArrayOfDicts(array); | |
| 109 assert.sameMembers(Object.keys(dict), ['a', 'b', 'c']); | |
| 110 assert.deepEqual(Array.from(dict.a), [6, undefined, 4, undefined]); | |
| 111 assert.deepEqual(Array.from(dict.b), [5, undefined, 3, 1]); | |
| 112 assert.deepEqual(Array.from(dict.c), [undefined, undefined, 2, 0]); | |
| 113 }); | |
| 114 | |
| 115 test('invertArrayOfDicts_customGetter', function() { | |
| 116 const fakeThis = { itemToDict: JSON.parse }; | |
| 117 const array = [ | |
| 118 '{"a": "test", "b": true}', | |
| 119 '{}', | |
| 120 '{invalid-json}', | |
| 121 '{"a": 42, "c": false}' | |
| 122 ]; | |
| 123 const dict = tr.b.invertArrayOfDicts(array, function(item) { | |
| 124 try { | |
| 125 return this.itemToDict(item); | |
| 126 } catch (e) { | |
| 127 return undefined; | |
| 128 } | |
| 129 }, fakeThis); | |
| 130 assert.sameMembers(Object.keys(dict), ['a', 'b', 'c']); | |
| 131 assert.deepEqual( | |
| 132 Array.from(dict.a), ['test', undefined, undefined, 42]); | |
| 133 assert.deepEqual( | |
| 134 Array.from(dict.b), [true, undefined, undefined, undefined]); | |
| 135 assert.deepEqual( | |
| 136 Array.from(dict.c), [undefined, undefined, undefined, false]); | |
| 137 }); | |
| 138 }); | |
| 139 </script> | |
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Chromium Code Reviews
Issue 2995843002:
Merge iteration_helpers into utils.html. (Closed)
