def test_c_isOperatorInStackSamePrecedenceWithCurrentToken_given_prefix_plus_at_stack_and_prefix_minus_as_token_expect_True(
self):
operatorStack = [] # Initialise operator stack
# Initialise operator token to insert to stack
operatorToken = operatorT.OperatorToken()
operatorToken.associativity = dictConstant.RIGHT_TO_LEFT
operatorToken.precedence = dictConstant.STRONG
operatorToken.symbol = '+'
operatorToken.affix = "PREFIX"
operatorToken.tokenType = "OPERATOR_TOKEN"
# Initialise current token
currentToken = operatorT.OperatorToken()
currentToken.associativity = dictConstant.RIGHT_TO_LEFT
currentToken.precedence = dictConstant.STRONG
currentToken.symbol = '+'
currentToken.affix = "PREFIX"
currentToken.tokenType = "OPERATOR_TOKEN"
# Push operator token into stack
stack.pushStack(operatorStack, operatorToken)
# isOperatorInStackHigherPrecedence(operatorStack, token)
self.assertEqual(
True,
operatorT.isOperatorInStackSamePrecedenceWithCurrentToken(
operatorStack, currentToken))
def test_e_isOperatorInStackSamePrecedenceWithCurrentToken_given_not_empty_stack_and_invalid_operator_token_expect_exception(
self):
# isOperatorInStackHigherPrecedence(operatorStack, token)
operatorStack = [] # Initialise operator stack
# Initialise operator token to insert to stack
operatorToken = operatorT.OperatorToken()
operatorToken.associativity = dictConstant.RIGHT_TO_LEFT
operatorToken.precedence = dictConstant.STRONG
operatorToken.symbol = '+'
operatorToken.affix = "PREFIX"
operatorToken.tokenType = "OPERATOR_TOKEN"
# Initialise current token
currentToken = operatorT.OperatorToken()
currentToken.associativity = dictConstant.RIGHT_TO_LEFT
currentToken.precedence = dictConstant.STRONG
currentToken.symbol = '+'
currentToken.affix = "PREFIX"
currentToken.tokenType = "INVALID"
# Push operator token into stack
stack.pushStack(operatorStack, operatorToken)
self.assertEqual(
False,
operatorT.isOperatorInStackSamePrecedenceWithCurrentToken(
operatorStack, currentToken))
def test_d_isOperatorInStackHigherPrecedenceThanCurrentToken_given_empty_stack_and_valid_operator_token_expect_exception(
self):
try:
# isOperatorInStackHigherPrecedence(operatorStack, token)
operatorStack = [] # Initialise operator stack
# Initialise current token
currentToken = operatorT.OperatorToken()
currentToken.associativity = dictConstant.RIGHT_TO_LEFT
currentToken.precedence = dictConstant.STRONG
currentToken.symbol = '+'
currentToken.affix = "PREFIX"
currentToken.tokenType = "OPERATOR_TOKEN"
self.assertEqual(
False,
operatorT.isOperatorInStackHigherPrecedenceThanCurrentToken(
operatorStack, currentToken))
except Exception as e:
print(e)
