text: test('some test', (t) => {
      t.throws(copymitter, /from should be a string!/, 'should throw when no args');
      t.end();
  });
  
  test('some test', (t) => {
      const fn = () => copymitter('hello');
      
      t.throws(fn, /from should be a string!/, 'should throw when no args');
      t.end();
  });
  