import { describe, expect, it } from '@jest/globals';
import { _, cnst, fromNative, id, toNative, undef } from '../src/core';

describe('id', () => {
  it('returns first argument', () => {
    expect(toNative(id._(fromNative('first')))).toBe('first');
  });
});

describe('cnst', () => {
  it('returns first argument after receiving second', () => {
    expect(toNative(cnst._(fromNative('first'))._(fromNative('second')))).toBe('first');
  });

  it('ignores second argument', () => {
    expect(toNative(cnst._(fromNative('first'))._(undef))).toBe('first');
  });
});