def test_multiple_steps(self):
operators = [AddOperator(1), MultiplyOperator(20), DivideOperator(3)]
problem = Problem(start_number=2,
end_number=1,
move_count=2,
operators=operators)
solution = random_solve(problem)
self.assertEqual(solution, [AddOperator(1), DivideOperator(3)])
def test_divide_negative(self):
state = State(current_number=24)
state.apply(DivideOperator(-3))
self.assertEqual(state.current_number, -8)
def test_positive_good_fraction(self):
state = State(current_number=1)
state.apply(DivideOperator(8))
self.assertEqual(state.current_number, 0.125)
def test_divide_positive(self):
state = State(current_number=50)
state.apply(DivideOperator(5))
self.assertEqual(state.current_number, 10)
def test_str_negative(self):
string = str(DivideOperator(-7))
self.assertEqual(string, "[ / -7 ]")
def test_str_positive(self):
string = str(DivideOperator(2))
self.assertEqual(string, "[ / 2 ]")
def test_negative_bad_fraction(self):
state = State(current_number=-1)
with self.assertRaises(ValueError):
state.apply(DivideOperator(16))
def test_positive_bad_fraction(self):
state = State(current_number=100)
with self.assertRaises(ValueError):
state.apply(DivideOperator(3))