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19 lines
574 B
TypeScript
19 lines
574 B
TypeScript
import assert from 'node:assert';
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import lodashStable from 'lodash';
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import { empties, stubNaN } from './utils';
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import mean from '../src/mean';
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describe('mean', () => {
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it('should return the mean of an array of numbers', () => {
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const array = [4, 2, 8, 6];
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assert.strictEqual(mean(array), 5);
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});
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it('should return `NaN` when passing empty `array` values', () => {
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const expected = lodashStable.map(empties, stubNaN),
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actual = lodashStable.map(empties, mean);
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assert.deepStrictEqual(actual, expected);
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});
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});
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