import { expect, test } from 'vitest'

import {

add,

divide,

multiply,

subtract,

} from './calculator'

test('add function', () => {

expect(add(1, 2)).toBe(3);

expect(add(1.0, 2.0)).toBe(3.0);

expect(add(0, 2.0)).toBe(2.0);

expect(add(2.0, 0)).toBe(2.0);

expect(add(-4, 2.0)).toBe(-2.0);

});

test('subtract function', () => {

expect(subtract(1, 2)).toBe(-1.0);

expect(subtract(2, 1)).toBe(1.0);

expect(subtract(1.0, 2.0)).toBe(-1.0);

expect(subtract(0, 2.0)).toBe(-2.0);

expect(subtract(2.0, 0)).toBe(2.0);

expect(subtract(-4, 2.0)).toBe(-6.0);

});

test('multiply function', () => {

expect(multiply(1, 2)).toBe(2.0);

expect(multiply(1.0, 2.0)).toBe(2.0);

expect(multiply(0, 2.0)).toBe(0.0);

expect(multiply(2.0, 0)).toBe(0.0);

expect(multiply(-4, 2.0)).toBe(-8.0);

});

test('divide function', () => {

expect(divide(1, 2)).toBe(0.5);

expect(divide(1.0, 2.0)).toBe(0.5);

expect(divide(0, 2.0)).toBe(0);

expect(divide(-4, 2.0)).toBe(-2.0);

// expect(divide(2.0, 0)).toBe('Cannot divide by 0');

});