def test_equal(self):
s = None
s = calculate_next_state(s, '=')
self.assertEqual(s['display'], '')
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '2')
s = calculate_next_state(s, '=')
s = calculate_next_state(s, '5')
self.assertEqual(s['display'], '5')
def calculate():
# extract the state.
calculator_state = None
if 'calculatorState' in request.json:
calculator_state = request.json['calculatorState']
input = request.json['input']
return jsonify(calculate_next_state(calculator_state, input))
def test_div(self):
s = None
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '2')
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '22')
s = calculate_next_state(s, '/')
self.assertEqual(s['display'], '22')
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '11')
s = calculate_next_state(s, '=')
self.assertEqual(s['display'], '2')
def test_plus(self):
s = None
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '12')
s = calculate_next_state(s, '+')
self.assertEqual(s['display'], '12')
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '3')
self.assertEqual(s['display'], '13')
s = calculate_next_state(s, '=')
self.assertEqual(s['display'], '25')
def test_mult(self):
s = None
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '12')
s = calculate_next_state(s, '*')
self.assertEqual(s['display'], '12')
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '3')
self.assertEqual(s['display'], '13')
s = calculate_next_state(s, '=')
self.assertEqual(s['display'], '156')
def test_complex(self):
s = None
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '12')
s = calculate_next_state(s, '+')
self.assertEqual(s['display'], '12')
s = calculate_next_state(s, '1')
self.assertEqual(s['display'], '1')
s = calculate_next_state(s, '3')
self.assertEqual(s['display'], '13')
s = calculate_next_state(s, '*')
self.assertEqual(s['display'], '25')
s = calculate_next_state(s, '4')
self.assertEqual(s['display'], '4')
s = calculate_next_state(s, '/')
self.assertEqual(s['display'], '100')
s = calculate_next_state(s, '2')
self.assertEqual(s['display'], '2')
s = calculate_next_state(s, '-')
self.assertEqual(s['display'], '50')
s = calculate_next_state(s, '10')
self.assertEqual(s['display'], '10')
s = calculate_next_state(s, '=')
self.assertEqual(s['display'], '40')