131 lines
3.8 KiB
TypeScript
131 lines
3.8 KiB
TypeScript
import { describe, expect, it } from 'bun:test';
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import { multArray, multBy, sumArray, sumBy } from './array.ts';
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describe('array utils', () => {
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it('sumArray number array', () => {
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const array = [1, 2, 3];
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const sum = sumArray(array);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3);
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expect(sumArray([])).toBeNumber();
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expect(sumArray([])).toBeFinite();
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expect(sumArray([])).toBe(0);
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});
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it('sumArray read-only number array', () => {
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const array = [1, 2, 3] as const;
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const sum = sumArray(array);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3);
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expect(sumArray([])).toBeNumber();
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expect(sumArray([])).toBeFinite();
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expect(sumArray([])).toBe(0);
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});
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it('sumBy number array', () => {
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const array = [1, 2, 3];
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const sum = sumBy(array, (e) => e);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3);
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});
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it('sumBy read-only number array', () => {
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const array = [1, 2, 3] as const;
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const sum = sumBy(array, (e) => e);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3);
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});
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it('sumBy mixed array', () => {
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const array = [1, '2', 3.1, ''];
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const sum = sumBy(array, (e) => e);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3.1);
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});
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it('sumBy object array', () => {
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const array: (
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| { value: number | string }
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| { differentValue: number | string }
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)[] = [{ value: 3 }, { value: '2' }, { differentValue: '-2.44' }];
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const sum = sumBy(array, (e) =>
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'differentValue' in e ? e.differentValue : e.value
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);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(3 + 2 - 2.44);
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});
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it('sumBy empty array', () => {
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expect(sumBy([], (e) => e)).toBeNumber();
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expect(sumBy([], (e) => e)).toBeFinite();
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expect(sumBy([], (e) => e)).toBe(0);
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});
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it('multArray number array', () => {
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const array = [1, 2, 3];
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const sum = multArray(array);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(2 * 3);
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expect(multArray([])).toBeNumber();
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expect(multArray([])).toBeFinite();
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expect(multArray([])).toBe(0);
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});
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it('multArray read-only number array', () => {
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const array = [1, 2, 3] as const;
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const sum = multArray(array);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(2 * 3);
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expect(multArray([])).toBeNumber();
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expect(multArray([])).toBeFinite();
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expect(multArray([])).toBe(0);
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});
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it('multBy number array', () => {
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const array = [1, 2, 3];
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const sum = sumBy(array, (e) => e);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3);
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});
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it('multBy read-only number array', () => {
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const array = [1, 2, 3] as const;
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const sum = multBy(array, (e) => e);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(1 + 2 + 3);
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});
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it('multBy mixed array', () => {
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const array = [1, '2', 3.1, ''];
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const sum = multBy(array, (e) => e);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(0);
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});
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it('multBy object array', () => {
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const array: (
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| { value: number | string }
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| { differentValue: number | string }
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)[] = [{ value: 3 }, { value: '2' }, { differentValue: '-2.44' }];
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const sum = multBy(array, (e) =>
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'differentValue' in e ? e.differentValue : e.value
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);
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expect(sum).toBeNumber();
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expect(sum).toBeFinite();
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expect(sum).toBe(3 * 2 * -2.44);
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});
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it('multBy empty array', () => {
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expect(multBy([], (e) => e)).toBeNumber();
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expect(multBy([], (e) => e)).toBeFinite();
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expect(multBy([], (e) => e)).toBe(0);
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});
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});
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