Created
June 29, 2016 02:53
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Partay // source https://jsbin.com/zicebo
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="https://wzrd.in/standalone/expect@latest"></script> | |
<script src="https://wzrd.in/standalone/deep-freeze@latest"></script> | |
<script src="https://fb.me/react-15.1.0.js"></script> | |
<script src="https://fb.me/react-dom-15.1.0.js"></script> | |
<meta charset="utf-8"> | |
<title>Partay</title> | |
</head> | |
<body> | |
<script id="jsbin-javascript"> | |
'use strict'; | |
function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i]; return arr2; } else { return Array.from(arr); } } | |
var addCounter = function addCounter(list) { | |
return [].concat(_toConsumableArray(list), [0]); | |
}; | |
var removeCounter = function removeCounter(list, index) { | |
return [].concat(_toConsumableArray(list.slice(0, index)), _toConsumableArray(list.slice(index + 1))); | |
}; | |
var incrementCounter = function incrementCounter(list, index) { | |
return [].concat(_toConsumableArray(list.slice(0, index)), [list[index] + 1], _toConsumableArray(list.slice(index + 1))); | |
}; | |
var testAddCounter = function testAddCounter() { | |
var listBefore = []; | |
var listAfter = [0]; | |
deepFreeze(listBefore); | |
expect(addCounter(listBefore)).toEqual(listAfter); | |
}; | |
var testRemoveCounter = function testRemoveCounter() { | |
var listBefore = [0, 10, 20]; | |
var listAfter = [0, 20]; | |
deepFreeze(listBefore); | |
expect(removeCounter(listBefore, 1)).toEqual(listAfter); | |
}; | |
var testIncrementCounter = function testIncrementCounter() { | |
var listBefore = [0, 1, 10]; | |
var listAfter = [0, 2, 10]; | |
deepFreeze(listBefore); | |
expect(incrementCounter(listBefore, 1)).toEqual(listAfter); | |
}; | |
testAddCounter(); | |
testRemoveCounter(); | |
testIncrementCounter(); | |
console.log('All tests passed'); | |
</script> | |
<script id="jsbin-source-javascript" type="text/javascript">const addCounter = (list) => { | |
return [...list, 0]; | |
}; | |
const removeCounter = (list, index) =>{ | |
return [ | |
...list.slice(0,index), | |
...list.slice(index + 1) | |
]; | |
}; | |
const incrementCounter = (list, index) => { | |
return [ | |
...list.slice(0, index), | |
list[index] + 1, | |
...list.slice(index + 1) | |
]; | |
} | |
const testAddCounter = () => { | |
const listBefore = []; | |
const listAfter = [0]; | |
deepFreeze(listBefore); | |
expect( | |
addCounter(listBefore) | |
).toEqual(listAfter); | |
}; | |
const testRemoveCounter = () => { | |
const listBefore = [0, 10, 20]; | |
const listAfter = [0, 20]; | |
deepFreeze(listBefore); | |
expect( | |
removeCounter(listBefore, 1) | |
).toEqual(listAfter); | |
} | |
const testIncrementCounter = () => { | |
const listBefore = [0, 1, 10]; | |
const listAfter = [0, 2, 10]; | |
deepFreeze(listBefore); | |
expect( | |
incrementCounter(listBefore, 1) | |
).toEqual(listAfter); | |
} | |
testAddCounter(); | |
testRemoveCounter(); | |
testIncrementCounter(); | |
console.log('All tests passed');</script></body> | |
</html> |
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'use strict'; | |
function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i]; return arr2; } else { return Array.from(arr); } } | |
var addCounter = function addCounter(list) { | |
return [].concat(_toConsumableArray(list), [0]); | |
}; | |
var removeCounter = function removeCounter(list, index) { | |
return [].concat(_toConsumableArray(list.slice(0, index)), _toConsumableArray(list.slice(index + 1))); | |
}; | |
var incrementCounter = function incrementCounter(list, index) { | |
return [].concat(_toConsumableArray(list.slice(0, index)), [list[index] + 1], _toConsumableArray(list.slice(index + 1))); | |
}; | |
var testAddCounter = function testAddCounter() { | |
var listBefore = []; | |
var listAfter = [0]; | |
deepFreeze(listBefore); | |
expect(addCounter(listBefore)).toEqual(listAfter); | |
}; | |
var testRemoveCounter = function testRemoveCounter() { | |
var listBefore = [0, 10, 20]; | |
var listAfter = [0, 20]; | |
deepFreeze(listBefore); | |
expect(removeCounter(listBefore, 1)).toEqual(listAfter); | |
}; | |
var testIncrementCounter = function testIncrementCounter() { | |
var listBefore = [0, 1, 10]; | |
var listAfter = [0, 2, 10]; | |
deepFreeze(listBefore); | |
expect(incrementCounter(listBefore, 1)).toEqual(listAfter); | |
}; | |
testAddCounter(); | |
testRemoveCounter(); | |
testIncrementCounter(); | |
console.log('All tests passed'); |
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