py3: make storlets tools as py3 compatible

Change-Id: I9d0c21c8e36c46a855f1bd4eedc0e1f1e21bf10e

storlets/tools/cluster_config_parser.py

@@ -14,13 +14,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import ConfigParser
+from six.moves import configparser
 
 
 class ClusterConfig(object):
 
     def __init__(self, config_path):
-        config = ConfigParser.ConfigParser()
+        config = configparser.ConfigParser()
         config.read(config_path)
         options = config.options('general')
         self.conf = {}

storlets/tools/testtools.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from cStringIO import StringIO
+from six.moves import StringIO
 
 
 class FakeStorletFile(object):

tests/unit/tools/extensions/test_ipython.py

@@ -14,13 +14,17 @@
 # limitations under the License.
 
 from IPython.core.error import UsageError
-from cStringIO import StringIO
+from six.moves import StringIO
 from storlets.tools.extensions.ipython import StorletMagics
 import unittest
 import mock
 import os
 import itertools
 
+import six
+if six.PY3:
+    from io import FileIO as file
+
 
 class FakeConnection(object):
     def __init__(self, fake_status=200, fake_headers=None, fake_iter=None):
@@ -127,7 +131,7 @@ class TestStorletMagicStorletApp(BaseTestIpythonExtension, unittest.TestCase):
             self._call_storletapp(line, cell)
         self.assertEqual(
             '--with-invoke option requires --input to run the app',
-            cm.exception.message)
+            cm.exception.args[0])
 
     def test_storlet_magics_invalid_input_fail(self):
         invalid_input_patterns = (
@@ -143,7 +147,7 @@ class TestStorletMagicStorletApp(BaseTestIpythonExtension, unittest.TestCase):
             self.assertEqual(
                 'swift object path must have the format: '
                 '"path:/<container>/<object>"',
-                cm.exception.message)
+                cm.exception.args[0])
 
     def test_storlet_magics_stdout(self):
         line = 'test.TestStorlet --with-invoke --input path:/foo/bar' \
@@ -185,7 +189,7 @@ class TestStorletMagicStorletApp(BaseTestIpythonExtension, unittest.TestCase):
                 self.assertEqual(
                     "You need to set OS_AUTH_URL, OS_USERNAME, OS_PASSWORD "
                     "and OS_PROJECT_NAME for Swift authentication",
-                    e.exception.message)
+                    e.exception.args[0])
 
     def test_storlet_auth_v2_not_supported(self):
         line = 'test.TestStorlet'
@@ -195,7 +199,7 @@ class TestStorletMagicStorletApp(BaseTestIpythonExtension, unittest.TestCase):
             self._call_storletapp(line, cell)
         self.assertEqual(
             'keystone v2 is not supported',
-            e.exception.message)
+            e.exception.args[0])
 
     def test_storlet_auth_v1_no_enough_auth_info(self):
         # NOTE: Now, storlets should work on keystone v3 so that this test
@@ -233,7 +237,7 @@ class TestStorletMagicStorletApp(BaseTestIpythonExtension, unittest.TestCase):
                 self.assertEqual(
                     "You need to set ST_AUTH, ST_USER, ST_KEY "
                     "for Swift authentication",
-                    e.exception.message)
+                    e.exception.args[0])
 
 
 class TestStorletMagicGet(BaseTestIpythonExtension, unittest.TestCase):
@@ -284,7 +288,7 @@ class TestStorletMagicGet(BaseTestIpythonExtension, unittest.TestCase):
         for scenario in scenarios:
             with self.assertRaises(UsageError) as e:
                 self._call_get(scenario['line'])
-            self.assertEqual(scenario['msg'], e.exception.message)
+            self.assertEqual(scenario['msg'], e.exception.args[0])
 
     def _test_get(self, line, outvar_name):
         self._call_get(line)
@@ -380,7 +384,7 @@ class TestStorletMagicCopy(BaseTestIpythonExtension, unittest.TestCase):
         for scenario in scenarios:
             with self.assertRaises(UsageError) as e:
                 self._call_copy(scenario['line'])
-            self.assertEqual(scenario['msg'], e.exception.message)
+            self.assertEqual(scenario['msg'], e.exception.args[0])
 
     def _test_copy(self, line, outvar_name):
         self._call_copy(line)
@@ -459,7 +463,7 @@ class TestStorletMagicPut(BaseTestIpythonExtension, unittest.TestCase):
         for scenario in scenarios:
             with self.assertRaises(UsageError) as e:
                 self._call_put(scenario['line'])
-            self.assertEqual(scenario['msg'], e.exception.message)
+            self.assertEqual(scenario['msg'], e.exception.args[0])
 
     def _test_put(self, line, outvar_name):
         open_name = '%s.open' % 'storlets.tools.extensions.ipython'

tests/unit/tools/test_testtools.py

@@ -53,4 +53,4 @@ class TestTestTools(TestCase):
             fake_storlet_out.set_metadata({})
         self.assertEqual(
             "Sending metadata twice is not allowed",
-            cm.exception.message)
+            cm.exception.args[0])

tox.ini

@@ -34,7 +34,8 @@ basepython = python3
 commands =
   nosetests -v \
       tests/unit/gateway \
-      tests/unit/sbus
+      tests/unit/sbus \
+      tests/unit/tools
 
 [testenv:func]
 basepython = python2.7