def test_many(self):
self.assertTrue(solution("wwr", 1))
self.assertFalse(solution("3wwr4", 2))
self.assertTrue(solution("3w4r4", 2))
def test_zero(self):
self.assertTrue(solution("ww", 0))
self.assertFalse(solution("wwr", 0))
def test_one(self):
self.assertTrue(solution("wwr", 1))
self.assertTrue(solution("rwr", 0))
