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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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8
test/standardDeviation/standardDeviation.js Normal file
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const standardDeviation = (arr, usePopulation = false) => {
const mean = arr.reduce((acc, val) => acc + val, 0) / arr.length;
return Math.sqrt(
arr.reduce((acc, val) => acc.concat((val - mean) ** 2), []).reduce((acc, val) => acc + val, 0) /
(arr.length - (usePopulation ? 0 : 1))
);
};
module.exports = standardDeviation;

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test/standardDeviation/standardDeviation.test.js Normal file
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const expect = require('expect');
const standardDeviation = require('./standardDeviation.js');
test('standardDeviation is a Function', () => {
expect(standardDeviation).toBeInstanceOf(Function);
});
t.equal(standardDeviation([10, 2, 38, 23, 38, 23, 21]), 13.284434142114991, "Returns the standard deviation of an array of numbers");
t.equal(standardDeviation([10, 2, 38, 23, 38, 23, 21], true), 12.29899614287479, "Returns the standard deviation of an array of numbers");