Add internal testing for the stress test framework

This adds a unit test for StressAction class and a end2end test
case for the whole stress test framework.

Change-Id: I4d30a131c75736fa05ba63f71cd731374f7fb9ba

tempest/tests/stress/test_stress.py

@@ -0,0 +1,57 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 Deutsche Telekom AG
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import shlex
+import subprocess
+
+import tempest.cli as cli
+from tempest.openstack.common import log as logging
+import tempest.test
+
+LOG = logging.getLogger(__name__)
+
+
+class StressFrameworkTest(tempest.test.BaseTestCase):
+    """Basic test for the stress test framework.
+    """
+
+    def _cmd(self, cmd, param):
+        """Executes specified command."""
+        cmd = ' '.join([cmd, param])
+        LOG.info("running: '%s'" % cmd)
+        cmd_str = cmd
+        cmd = shlex.split(cmd)
+        result = ''
+        result_err = ''
+        try:
+            stdout = subprocess.PIPE
+            stderr = subprocess.PIPE
+            proc = subprocess.Popen(
+                cmd, stdout=stdout, stderr=stderr)
+            result, result_err = proc.communicate()
+            if proc.returncode != 0:
+                LOG.debug('error of %s:\n%s' % (cmd_str, result_err))
+                raise cli.CommandFailed(proc.returncode,
+                                        cmd,
+                                        result)
+        finally:
+            LOG.debug('output of %s:\n%s' % (cmd_str, result))
+        return proc.returncode
+
+    def test_help_function(self):
+        result = self._cmd("python", "-m tempest.stress.run_stress -h")
+        self.assertEqual(0, result)

tempest/tests/stress/test_stressaction.py

@@ -0,0 +1,65 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 Deutsche Telekom AG
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import tempest.stress.stressaction as stressaction
+import tempest.test
+
+
+class FakeStressAction(stressaction.StressAction):
+    def __init__(self, manager, max_runs=None, stop_on_error=False):
+        super(self.__class__, self).__init__(manager, max_runs, stop_on_error)
+        self._run_called = False
+
+    def run(self):
+        self._run_called = True
+
+    @property
+    def run_called(self):
+        return self._run_called
+
+
+class FakeStressActionFailing(stressaction.StressAction):
+    def run(self):
+        raise Exception('FakeStressActionFailing raise exception')
+
+
+class TestStressAction(tempest.test.BaseTestCase):
+    def _bulid_stats_dict(self, runs=0, fails=0):
+        return {'runs': runs, 'fails': fails}
+
+    def testStressTestRun(self):
+        stressAction = FakeStressAction(manager=None, max_runs=1)
+        stats = self._bulid_stats_dict()
+        stressAction.execute(stats)
+        self.assertTrue(stressAction.run_called)
+        self.assertEqual(stats['runs'], 1)
+        self.assertEqual(stats['fails'], 0)
+
+    def testStressMaxTestRuns(self):
+        stressAction = FakeStressAction(manager=None, max_runs=500)
+        stats = self._bulid_stats_dict(runs=499)
+        stressAction.execute(stats)
+        self.assertTrue(stressAction.run_called)
+        self.assertEqual(stats['runs'], 500)
+        self.assertEqual(stats['fails'], 0)
+
+    def testStressTestRunWithException(self):
+        stressAction = FakeStressActionFailing(manager=None, max_runs=1)
+        stats = self._bulid_stats_dict()
+        stressAction.execute(stats)
+        self.assertEqual(stats['runs'], 1)
+        self.assertEqual(stats['fails'], 1)