def test_parse_multiplication_fails(self):
"""
In this test division by zero is checked since it's not possible to
make this operation, parse_multiplication() method should raise a
'MathParseException' so that it can be handled in the rest of the code
"""
expr = '5/0'
p = Parser(expr)
try:
p.parse_multiplication()
except MathParseException:
raised = True
self.assertTrue(raised)
def test_parse_multiplication(self):
"""
parse_multiplication() method is checked in this test in order to
assure it works properly, given a multiplication operation contained
in a string as a input param
"""
expr = '1/(5+7)'
p = Parser(expr)
result = p.parse_multiplication()
self.assertEqual(result, 1.0/12.0)