const {objectFromPairs} = require('./_30s.js');

test('objectFromPairs is a Function', () => {
  expect(objectFromPairs).toBeInstanceOf(Function);
});
test('Creates an object from the given key-value pairs.', () => {
  expect(objectFromPairs([['a', 1], ['b', 2]])).toEqual({ a: 1, b: 2 });
});