import { expect } from 'chai';
import u from '../lib';

describe('u.omitBy', () => {
  it('can omitBy with a function', () => {
    const predicate = (value, key) => (value === 7 && key === 'bar');
    const result = u({ foo: u.omitBy(predicate) }, { foo: { bar: 7, baz: 'a' } });

    expect(result).to.eql({ foo: { baz: 'a' } });
  });

  it('freezes the result', () => {
    expect(Object.isFrozen(u.omit('a', {}))).to.be.true;
  });
});