Use parametrized tests where it possible

tests/rules/test_sudo.py

@@ -1,11 +1,16 @@
+import pytest
 from thefuck.rules.sudo import match, get_new_command
 from tests.utils import Command
 
 
-def test_match():
-    assert match(Command(stderr='Permission denied'), None)
-    assert match(Command(stderr='permission denied'), None)
-    assert match(Command(stderr="npm ERR! Error: EACCES, unlink"), None)
+@pytest.mark.parametrize('stderr', ['Permission denied',
+                                    'permission denied',
+                                    "npm ERR! Error: EACCES, unlink"])
+def test_match(stderr):
+    assert match(Command(stderr=stderr), None)
+
+
+def test_not_match():
     assert not match(Command(), None)