konnosisNonNullable.test.ts27 lines · main
| 1 | import { describe, expect, it } from 'vitest' |
| 2 | |
| 3 | import { isNonNullable } from './isNonNullable.js' |
| 4 | |
| 5 | describe(`isNonNullable`, () => { |
| 6 | it.each([ |
| 7 | [null, false], |
| 8 | [undefined, false], |
| 9 | // void |
| 10 | [(() => {})(), false], |
| 11 | // Truthy |
| 12 | [`string`, true], |
| 13 | [1, true], |
| 14 | [true, true], |
| 15 | // Falsy |
| 16 | [``, true], |
| 17 | [NaN, true], |
| 18 | [0, true], |
| 19 | [0, true], |
| 20 | [false, true], |
| 21 | // Type coercion |
| 22 | [[], true], |
| 23 | [{}, true], |
| 24 | ])(`correctly matches against nullish values`, (val, expected) => { |
| 25 | expect(isNonNullable(val)).toStrictEqual(expected) |
| 26 | }) |
| 27 | }) |