numberValidator.test.js

const assert = require('assert');
const operations = require('./operations');

// Below test cases for input validation
it('indicates failure when a string is used instead of a number', () => {
  assert.equal(operations.validateNumbers('beauty', 10), false)
});

it('indicates failure when two strings is used instead of numbers', () => {
  assert.equal(operations.validateNumbers('Jamal', 'Beauty'), false)
});

it('successfully run when two inputs are number', () => {
  assert.equal(operations.validateNumbers(10, 10), true)
});