def testOperatorClear(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('2 sqrt clear'.split())
self.assertEqual(len(actualValueStack), 0)
def testOperatorUndo(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('5 4 3 2 undo undo * 5 * undo'.split())
expectedValueStack = [float(20), float(5)]
self.assertEqual(actualValueStack, expectedValueStack)
def testOperatorDiv(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('7 12 2 /'.split())
expectedValueStack = [float(7), float(12 / 2)]
self.assertEqual(actualValueStack, expectedValueStack)
def testMixOperators(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('1 2 3 * 5 + 7 / -'.split())
expectedValueStack = [float(1 - (2 * 3 + 5) / 7)]
self.assertEqual(actualValueStack, expectedValueStack)
def testOperatorSub(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('5 2 -'.split())
expectedValueStack = [float(5 - 2)]
self.assertEqual(actualValueStack, expectedValueStack)
def testOperatorMul(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('1 2 3 4 5 * * * '.split())
expectedValueStack = [float(1), float(5 * 4 * 3 * 2 * 1)]
self.assertEqual(actualValueStack, expectedValueStack)
def testNumbersStack(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('5 4 3 2'.split())
expectedValueStack = [float(5), float(4), float(3), float(2)]
self.assertEqual(actualValueStack, expectedValueStack)
def testOperatorSqrt(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('2 sqrt'.split())
expectedValueStack = [math.sqrt(float(2))]
self.assertEqual(actualValueStack, expectedValueStack)
def testUndoWithInsufficientParameters(self):
self.assertRaises(IndexError,
rpn_caculator.RPNCaculator().caculate,
'1 2 3 * 5 undo undo undo undo undo undo'.split())
def testInsufficientParameters(self):
actualValueStack, actualInstructionStack = rpn_caculator.RPNCaculator(
).caculate('1 2 3 * 5 + * * 6 5'.split())
expectedValueStack = [11.0]
self.assertEqual(actualValueStack, expectedValueStack)
def testNegativeSqrt(self):
self.assertRaises(ValueError,
rpn_caculator.RPNCaculator().caculate,
'-1 sqrt'.split())
def testZeroDivision(self):
self.assertRaises(ZeroDivisionError,
rpn_caculator.RPNCaculator().caculate,
'1 0 /'.split())
def testInvalidInput(self):
self.assertRaises(ValueError,
rpn_caculator.RPNCaculator().caculate, 's')
