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ryanivandsouza/index.html

Created July 14, 2017 06:07
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JS Bin // source http://jsbin.com/xinuvus
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<script src="https://wzrd.in/standalone/expect@latest"></script>
<script src="https://wzrd.in/standalone/deep-freeze@latest"></script>
</head>
<body>
<script id="jsbin-javascript">
const addCounter = (list) => {
return [...list, 0];
}
const testAddCounter = () => {
const listBefore = []
const listAfter = [0]
deepFreeze(listBefore)
expect (
addCounter(listBefore)
).toEqual(listAfter)
}
const removeCounter = (list, index) => {
return [...list.slice(0, index),
...list.slice(index + 1)]
}
const testRemoveCounter = () => {
const listBefore = [0, 1, 2, 3]
const listAfter = [0, 2, 3]
deepFreeze(listBefore)
expect(
removeCounter(listBefore, 1)
).toEqual(listAfter)
}
const incrementCounter = (list, index) => {
return [...list.slice(0, index),
list[index] + 1,
...list.slice(index + 1)]
}
const testIncrementCounter = () => {
const listBefore = [0, 1, 2, 3]
const listAfter = [0, 2, 2, 3]
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 testAddCounter = () => {
const listBefore = []
const listAfter = [0]
deepFreeze(listBefore)
expect (
addCounter(listBefore)
).toEqual(listAfter)
}
const removeCounter = (list, index) => {
return [...list.slice(0, index),
...list.slice(index + 1)]
}
const testRemoveCounter = () => {
const listBefore = [0, 1, 2, 3]
const listAfter = [0, 2, 3]
deepFreeze(listBefore)
expect(
removeCounter(listBefore, 1)
).toEqual(listAfter)
}
const incrementCounter = (list, index) => {
return [...list.slice(0, index),
list[index] + 1,
...list.slice(index + 1)]
}
const testIncrementCounter = () => {
const listBefore = [0, 1, 2, 3]
const listAfter = [0, 2, 2, 3]
deepFreeze(listBefore)
expect(
incrementCounter(listBefore, 1)
).toEqual(listAfter)
}
testAddCounter()
testRemoveCounter()
testIncrementCounter()
console.log('All tests passed!')</script></body>
</html>
Raw
jsbin.xinuvus.js
const addCounter = (list) => {
return [...list, 0];
}
const testAddCounter = () => {
const listBefore = []
const listAfter = [0]
deepFreeze(listBefore)
expect (
addCounter(listBefore)
).toEqual(listAfter)
}
const removeCounter = (list, index) => {
return [...list.slice(0, index),
...list.slice(index + 1)]
}
const testRemoveCounter = () => {
const listBefore = [0, 1, 2, 3]
const listAfter = [0, 2, 3]
deepFreeze(listBefore)
expect(
removeCounter(listBefore, 1)
).toEqual(listAfter)
}
const incrementCounter = (list, index) => {
return [...list.slice(0, index),
list[index] + 1,
...list.slice(index + 1)]
}
const testIncrementCounter = () => {
const listBefore = [0, 1, 2, 3]
const listAfter = [0, 2, 2, 3]
deepFreeze(listBefore)
expect(
incrementCounter(listBefore, 1)
).toEqual(listAfter)
}
testAddCounter()
testRemoveCounter()
testIncrementCounter()
console.log('All tests passed!')
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