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# Copyright (c) 2015 Pavel Roskin <proski@gnu.org>
# Copyright (c) 2015 Rene Zhang <rz99@cornell.edu>
# Copyright (c) 2015 Steven Myint <hg@stevenmyint.com>
# Copyright (c) 2015-2016 Claudiu Popa <pcmanticore@gmail.com>
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
"""Tests for pylint.checkers.exceptions."""
import sys
import unittest
import astroid
from pylint.checkers import exceptions
from pylint.testutils import CheckerTestCase, Message
class ExceptionsCheckerTest(CheckerTestCase):
"""Tests for pylint.checkers.exceptions."""
CHECKER_CLASS = exceptions.ExceptionsChecker
# These tests aren't in the functional test suite,
# since they will be converted with 2to3 for Python 3
# and `raise (Error, ...)` will be converted to
# `raise Error(...)`, so it beats the purpose of the test.
@unittest.skipUnless(sys.version_info[0] == 3,
"The test should emit an error on Python 3.")
def test_raising_bad_type_python3(self):
node = astroid.extract_node('raise (ZeroDivisionError, None) #@')
message = Message('raising-bad-type', node=node, args='tuple')
with self.assertAddsMessages(message):
self.checker.visit_raise(node)
@unittest.skipUnless(sys.version_info[0] == 2,
"The test is valid only on Python 2.")
def test_raising_bad_type_python2(self):
nodes = astroid.extract_node('''
raise (ZeroDivisionError, None) #@
from something import something
raise (something, None) #@
raise (4, None) #@
raise () #@
''')
with self.assertNoMessages():
self.checker.visit_raise(nodes[0])
with self.assertNoMessages():
self.checker.visit_raise(nodes[1])
message = Message('raising-bad-type', node=nodes[2], args='tuple')
with self.assertAddsMessages(message):
self.checker.visit_raise(nodes[2])
message = Message('raising-bad-type', node=nodes[3], args='tuple')
with self.assertAddsMessages(message):
self.checker.visit_raise(nodes[3])
if __name__ == '__main__':
unittest.main()
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