def testDivInt(self):
S = RPNCalculator()
S.push(8)
S.push(4)
S.divide()
# print(S)
self.assertTrue(str(S) == '[2*]' or str(S) =='[2.0*]')
def testPushOneBadType(self):
S = RPNCalculator()
try:
S.push('5')
self.assertTrue(False, 'RPN Calc push of non-number failed to raise exception')
except Exception as e:
self.assertTrue(isinstance(e, TypeError), 'RPN Calc exception on push of non-number not a TypeError')
def testPushTwoBadType(self):
S = RPNCalculator()
try:
S.push(5)
S.push("a")
self.assertTrue(False, 'No exception on RPNCalc push of non-numeric')
except Exception as e:
self.assertTrue(isinstance(e, TypeError), 'RPN Calc exception on push of non-number not a TypeError')
def testBadAdd(self):
S = RPNCalculator()
try:
val = S.evaluate('2 + 3')
self.assertTrue(False, 'Evaluate of bad combo failed to raise exception')
except Exception as e:
if not isinstance(e, ValueError):
raise self.fail('RPN eval raised exception that is not ValueError')
self.assertTrue(True)
def testPushOneBadType(self):
S = RPNCalculator()
try:
S.push('5')
self.assertTrue(
False, 'RPN Calc push of non-number failed to raise exception')
except Exception as e:
self.assertTrue(
isinstance(e, TypeError),
'RPN Calc exception on push of non-number not a TypeError')
def testBadAdd(self):
S = RPNCalculator()
try:
val = S.evaluate('2 + 3')
self.assertTrue(False,
'Evaluate of bad combo failed to raise exception')
except Exception as e:
if not isinstance(e, ValueError):
raise self.fail(
'RPN eval raised exception that is not ValueError')
self.assertTrue(True)
def testPushOne(self):
S = RPNCalculator()
S.push(5)
self.assertEqual(str(S), '[5*]')
S = RPNCalculator()
S.push(7.5)
self.assertEqual(str(S), '[7.5*]')
def testAddThree(self):
S = RPNCalculator()
S.push(5)
S.push(3)
S.push(7)
S.add()
S.add()
self.assertEqual(str(S), '[15*]')
def testAddThree(self):
S = RPNCalculator()
S.push(5)
S.push(3)
S.push(7)
S.add()
S.add()
self.assertEqual(str(S), '[15*]')
def testEvalAdd(self):
S = RPNCalculator()
val = S.evaluate('3 5 +')
self.assertEqual(val, 8)
self.assertEqual(str(S), '[8*]')
S = RPNCalculator()
val = S.evaluate('3 5 + 2 +')
self.assertEqual(val, 10)
self.assertEqual(str(S), '[10*]')
S = RPNCalculator()
val = S.evaluate('2 3 5 + +')
self.assertEqual(val, 10)
self.assertEqual(str(S), '[10*]')
def testSimpleEval(self):
S = RPNCalculator()
val = S.evaluate('3')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate('3 5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
S = RPNCalculator()
val = S.evaluate('3 5 7')
self.assertEqual(val, 7)
self.assertEqual(str(S), '[7*, 5, 3]')
def testPushOne(self):
S = RPNCalculator()
S.push(5)
self.assertEqual(str(S), '[5*]')
S = RPNCalculator()
S.push(7.5)
self.assertEqual(str(S), '[7.5*]')
def testDivInt(self):
S = RPNCalculator()
S.push(8)
S.push(4)
S.divide()
# print(S)
self.assertTrue(str(S) == '[2*]' or str(S) == '[2.0*]')
def testPushTwoBadType(self):
S = RPNCalculator()
try:
S.push(5)
S.push("a")
self.assertTrue(False,
'No exception on RPNCalc push of non-numeric')
except Exception as e:
self.assertTrue(
isinstance(e, TypeError),
'RPN Calc exception on push of non-number not a TypeError')
def testSimpleEval(self):
S = RPNCalculator()
val = S.evaluate('3')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate('3 5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
S = RPNCalculator()
val = S.evaluate('3 5 7')
self.assertEqual(val, 7)
self.assertEqual(str(S), '[7*, 5, 3]')
def testEvalAdd(self):
S = RPNCalculator()
val = S.evaluate('3 5 +')
self.assertEqual(val, 8)
self.assertEqual(str(S), '[8*]')
S = RPNCalculator()
val = S.evaluate('3 5 + 2 +')
self.assertEqual(val, 10)
self.assertEqual(str(S), '[10*]')
S = RPNCalculator()
val = S.evaluate('2 3 5 + +')
self.assertEqual(val, 10)
self.assertEqual(str(S), '[10*]')
def testEmptyConstructor(self):
S = RPNCalculator()
self.assertEqual(str(S), '[]')
def testAddFloat(self):
S = RPNCalculator()
S.push(5.5)
S.push(3.75)
S.add()
self.assertEqual(str(S), '[9.25*]')
def testSubInt(self):
S = RPNCalculator()
S.push(56)
S.push(88)
S.subtract()
self.assertEqual(str(S), '[-32*]')
def testMulInt(self):
S = RPNCalculator()
S.push(5)
S.push(3)
S.multiply()
self.assertEqual(str(S), '[15*]')
def testAddInt(self):
S = RPNCalculator()
S.push(5)
S.push(3)
S.add()
self.assertEqual(str(S), '[8*]')
def testPushTwo(self):
S = RPNCalculator()
S.push(5)
S.push(3)
self.assertEqual(str(S), '[3*, 5]')
def testSimpleEvalWhitespace(self):
S = RPNCalculator()
val = S.evaluate(' 3')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate('3 ')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate(' 3 ')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate('3\t5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
S = RPNCalculator()
val = S.evaluate('3 5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
S = RPNCalculator()
val = S.evaluate('3\t\t5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
def testAddInt(self):
S = RPNCalculator()
S.push(5)
S.push(3)
S.add()
self.assertEqual(str(S), '[8*]')
def testMulInt(self):
S = RPNCalculator()
S.push(5)
S.push(3)
S.multiply()
self.assertEqual(str(S), '[15*]')
def testEvalExample3(self):
S = RPNCalculator()
val = S.evaluate('3 5 + 7 * 8 11 * -')
self.assertEqual(val, -32)
self.assertEqual(str(S), '[-32*]')
def testSubInt(self):
S = RPNCalculator()
S.push(56)
S.push(88)
S.subtract()
self.assertEqual(str(S), '[-32*]')
def testSimpleEvalWhitespace(self):
S = RPNCalculator()
val = S.evaluate(' 3')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate('3 ')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate(' 3 ')
self.assertEqual(val, 3)
self.assertEqual(str(S), '[3*]')
S = RPNCalculator()
val = S.evaluate('3\t5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
S = RPNCalculator()
val = S.evaluate('3 5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
S = RPNCalculator()
val = S.evaluate('3\t\t5')
self.assertEqual(val, 5)
self.assertEqual(str(S), '[5*, 3]')
class RPNCalculatorTest(unittest.TestCase):
calc = None
def setUp(self):
self.calc = RPNCalculator()
def test_add2(self):
self.calc.input_work("1 2 +")
self.assertEqual(self.calc.get_result(), 3)
def test_multiple2(self):
self.calc.input_work("3 2 *")
self.assertEqual(self.calc.get_result(), 6)
def test_minus2(self):
self.calc.input_work("1.5 2.3 -")
#self.assertEqual(round(self.calc.get_result(), 2), -0.8)
self.assertAlmostEqual(self.calc.get_result(), -0.8)
def test_div2(self):
self.calc.input_work("10 3 /")
#self.assertEqual(round(self.calc.get_result(), 2), 3.33)
#use assertalmostequal method to avoid using round() func when doing calculation with float
self.assertAlmostEqual(self.calc.get_result(), 3.33, places=2)
def test_valuerror(self):
self.calc.input_work("1 a +")
self.assertEqual(self.calc.get_result(), "Cannot convert input to number.")
def test_indexerror(self):
self.calc.input_work("1 2 + *")
self.assertEqual(self.calc.get_result(), "Math Error!")
def test_add_minus_mul_div(self):
self.calc.input_work(" 1 2 + 6 * 2 / 1 - ")
#self.assertEqual(round(self.calc.get_result(), 2), 8)
self.assertEqual(self.calc.get_result(), 8)
def test_sin_number(self):
self.calc.input_work("30 sin")
#self.assertEqual(round(self.calc.get_result(), 2), -0.99)
#using assertalmostequal we can use either places (how mang digits) or delta (diff between two elements)
self.assertAlmostEqual(self.calc.get_result(), -0.99, msg="check sin() function in RNPCalculator", delta=0.01)
@nottest
def test_sin_degree(self):
self.calc.input_work("30 d sin")
self.assertEqual(round(self.calc.get_result(), 2), 0.5)
#demo for how to use skip decorator to skip function not working for windows platform
#(skip can be used for any methods in the test and even for the test class)
@unittest.skipUnless(sys.platform.startswith("win"), "requires Windows")
def test_windows_support(self):
self.assertFalse(False)
@unittest.skipIf(sys.platform.startswith("win"), "cannot run on Windows")
def test_not_windows_support(self):
self.assertTrue(True)
def testEvalExample3(self):
S = RPNCalculator()
val = S.evaluate('3 5 + 7 * 8 11 * -')
self.assertEqual(val, -32)
self.assertEqual(str(S), '[-32*]')
def testPushTwo(self):
S = RPNCalculator()
S.push(5)
S.push(3)
self.assertEqual(str(S), '[3*, 5]')
def setUp(self): self.calc = RPNCalculator()
def testAddFloat(self):
S = RPNCalculator()
S.push(5.5)
S.push(3.75)
S.add()
self.assertEqual(str(S), '[9.25*]')
