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Test migration to jest by hand

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Apparently using regular expressions is way easier.
This commit is contained in:
Angelos Chalaris
2018-06-18 15:15:56 +03:00
parent 977949ca61
commit 4f7da1be9b
894 changed files with 5917 additions and 3607 deletions
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6
test/groupBy/groupBy.js Normal file
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const groupBy = (arr, fn) =>
arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val, i) => {
acc[val] = (acc[val] || []).concat(arr[i]);
return acc;
}, {
module.exports = groupBy;

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test/groupBy/groupBy.test.js Normal file
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const expect = require('expect');
const groupBy = require('./groupBy.js');
test('groupBy is a Function', () => {
expect(groupBy).toBeInstanceOf(Function);
});
t.deepEqual(groupBy([6.1, 4.2, 6.3], Math.floor), {4: [4.2], 6: [6.1, 6.3]}, "Groups the elements of an array based on the given function");
t.deepEqual(groupBy(['one', 'two', 'three'], 'length'), {3: ['one', 'two'], 5: ['three']}, "Groups the elements of an array based on the given function");