Enable H202 warning for flake8

Change-Id: Iaeb6d4ab1af5063558ef1a7b9a85e46c6cf0ccb7

taskflow/tests/unit/test_unordered_flow.py

@@ -53,7 +53,7 @@ class UnorderedFlowTest(test.TestCase):
         wf.add(utils.make_reverting_task('1'))
         wf.add(utils.make_reverting_task('2', blowup=True))
         e = self._make_engine(wf)
-        self.assertRaises(Exception, e.run)
+        self.assertRaisesRegexp(RuntimeError, '^I blew up', e.run)
 
     def test_functor_flow(self):
 

taskflow/tests/utils.py

@@ -36,7 +36,7 @@ def make_reverting_task(token, blowup=False):
     if blowup:
 
         def blow_up(context, *args, **kwargs):
-            raise Exception("I blew up")
+            raise RuntimeError("I blew up")
 
         return task.FunctorTask(blow_up, name='blowup_%s' % token)
     else:

tox.ini

@@ -47,6 +47,6 @@ commands = python setup.py testr --coverage --testr-args='{posargs}'
 commands = {posargs}
 
 [flake8]
-ignore = H202,H402
+ignore = H402
 builtins = _
 exclude = .venv,.tox,dist,doc,./taskflow/openstack/common,*egg,.git,build,tools