def test_equals(self):
     self.assertEqual(remove('this is a string', {'t': 1, 'i': 2}),
                      'hs s a string')
 def test_equals_5(self):
     self.assertEqual(remove(
         'codewars', {'c': 5, 'o': 1, 'd': 1, 'e': 1, 'w': 1, 'z': 1,
                      'a': 1, 'r': 1, 's': 1}
     ), '')
 def test_equals_3(self):
     self.assertEqual(remove('apples and bananas', {'a': 50, 'n': 1}),
                      'pples d bnns')
 def test_equals_4(self):
     self.assertEqual(remove('a', {'a': 1, 'n': 1}), '')
 def test_equals_2(self):
     self.assertEqual(remove('hello world', {'x': 5, 'i': 2}),
                      'hello world')