5-curry.test

({
  name: 'press',
  length: [50, 200],
  test: press => {
    {
      const f1 = press('1');
      if (typeof f1 !== 'function') {
        throw new Error(`Expected press('1') to be a function.`);
      }
    }
    {
      const f2 = press('1')('2');
      if (typeof f2 !== 'function') {
        throw new Error(`Expected press('1')('2') to be a function.`);
      }
    }
    {
      const f3 = press('1')('2')('3');
      if (typeof f3 !== 'function') {
        throw new Error(`Expected press('1')('2')('3') to be a function.`);
      }
    }
    {
      const e4 = press('1')('2')('3')('4');
      if (typeof e4 !== 'boolean') {
        throw new Error(`Expected press('1')('2')('3')('4') to be a boolean.`);
      }
    }
    {
      const res = press('1')('2')('3')('4');
      if (res) {
        throw new Error(`Expected false when entered wrong pin code.`);
      }
    }
    {
      const res = press('4')('9')('6')('7');
      if (!res) {
        throw new Error(`Expected true when entered correct pin code.`);
      }
    }
  }
})