8th day of python challenges 111-117

venv/lib/python3.6/site-packages/pylint/test/unittest_checker_exceptions.py

@@ -0,0 +1,49 @@
+# Copyright (c) 2015-2018 Claudiu Popa <pcmanticore@gmail.com>
+# Copyright (c) 2015 Rene Zhang <rz99@cornell.edu>
+# Copyright (c) 2015 Steven Myint <hg@stevenmyint.com>
+# Copyright (c) 2015 Pavel Roskin <proski@gnu.org>
+# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
+# Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com>
+# Copyright (c) 2018 Brian Shaginaw <brian.shaginaw@warbyparker.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 astroid
+
+from pylint.checkers import exceptions
+from pylint.testutils import CheckerTestCase, Message
+
+
+class TestExceptionsChecker(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.
+
+    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)
+
+    def test_bad_exception_context_function(self):
+        node = astroid.extract_node(
+            """
+        def function():
+            pass
+
+        try:
+            pass
+        except function as exc:
+            raise Exception from exc  #@
+        """
+        )
+        message = Message("bad-exception-context", node=node)
+        with self.assertAddsMessages(message):
+            self.checker.visit_raise(node)