| 1 | import { describe, it } from 'node:test'; |
| 2 | |
| 3 | import { expect } from 'expect'; |
| 4 | |
| 5 | import { average, median, nthPercentile, stdDeviation } from '../../src/utils/StatisticUtils'; |
| 6 | |
| 7 | await describe('StatisticUtils test suite', async () => { |
| 8 | await it('Verify average()', () => { |
| 9 | expect(average([])).toBe(0); |
| 10 | expect(average([0.08])).toBe(0.08); |
| 11 | expect(average([0.25, 4.75, 3.05, 6.04, 1.01, 2.02, 5.03])).toBe(3.1642857142857146); |
| 12 | expect(average([0.25, 4.75, 3.05, 6.04, 1.01, 2.02])).toBe(2.8533333333333335); |
| 13 | }); |
| 14 | |
| 15 | await it('Verify median()', () => { |
| 16 | expect(median([])).toBe(0); |
| 17 | expect(median([0.08])).toBe(0.08); |
| 18 | expect(median([0.25, 4.75, 3.05, 6.04, 1.01, 2.02, 5.03])).toBe(3.05); |
| 19 | expect(median([0.25, 4.75, 3.05, 6.04, 1.01, 2.02])).toBe(2.535); |
| 20 | }); |
| 21 | |
| 22 | await it('Verify nthPercentile()', () => { |
| 23 | expect(nthPercentile([], 25)).toBe(0); |
| 24 | expect(nthPercentile([0.08], 50)).toBe(0.08); |
| 25 | const array0 = [0.25, 4.75, 3.05, 6.04, 1.01, 2.02, 5.03]; |
| 26 | expect(nthPercentile(array0, 0)).toBe(0.25); |
| 27 | expect(nthPercentile(array0, 50)).toBe(3.05); |
| 28 | expect(nthPercentile(array0, 80)).toBe(4.974); |
| 29 | expect(nthPercentile(array0, 85)).toBe(5.131); |
| 30 | expect(nthPercentile(array0, 90)).toBe(5.434); |
| 31 | expect(nthPercentile(array0, 95)).toBe(5.736999999999999); |
| 32 | expect(nthPercentile(array0, 100)).toBe(6.04); |
| 33 | }); |
| 34 | |
| 35 | await it('Verify stdDeviation()', () => { |
| 36 | expect(stdDeviation([0.25, 4.75, 3.05, 6.04, 1.01, 2.02, 5.03])).toBe(2.1879050645374383); |
| 37 | }); |
| 38 | }); |