text: import test from 'ava';
  import fn from './';
  
  test('expects a string', t => {
  	t.throws(() => {
  		fn([]);
  	}, 'mailchimp-dc expected a string');
  });
  
  test('gets dc', t => {
  	t.is(fn('0000000000000-dc12'), 'dc12');
  });
  
  test('returns string if incorrect format', t => {
  	t.is(fn('0000000000000dc12'), '0000000000000dc12');
  });
  
  