Replace str with six.text_type in tests

Replace str with six.text_type in necessary places, so that lazy
translation can be enabled in subsequent patches.

Change-Id: I40732ec7e9f53b3cb487880965797253452f95cd

heat/tests/test_engine_api_utils.py

@@ -16,6 +16,7 @@ import json
 import uuid
 
 import mock
+import six
 
 from heat.common.identifier import EventIdentifier
 from heat.common import template_format
@@ -54,7 +55,7 @@ class EngineApiTest(HeatTestCase):
     def test_timeout_extract_negative(self):
         p = {'timeout_mins': '-100'}
         error = self.assertRaises(ValueError, api.extract_args, p)
-        self.assertIn('Invalid timeout value', str(error))
+        self.assertIn('Invalid timeout value', six.text_type(error))
 
     def test_timeout_extract_not_present(self):
         args = api.extract_args({})
@@ -70,7 +71,7 @@ class EngineApiTest(HeatTestCase):
         error = self.assertRaises(ValueError, api.extract_args, p)
         self.assertEqual(
             'Unexpected adopt data "foo". Adopt data must be a dict.',
-            str(error))
+            six.text_type(error))
 
     def test_adopt_stack_data_extract_not_present(self):
         args = api.extract_args({})

heat/tests/test_fault_middleware.py

@@ -11,6 +11,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import six
+
 from heat.common import exception as heat_exc
 from heat.openstack.common.rpc import common as rpc_common
 from heat.tests.common import HeatTestCase
@@ -80,7 +82,8 @@ class FaultMiddlewareTest(HeatTestCase):
                                                                serialized)
         wrapper = fault.FaultWrapper(None)
         msg = wrapper._error(remote_error)
-        expected_message, expected_traceback = str(remote_error).split('\n', 1)
+        expected_message, expected_traceback = six.text_type(remote_error).\
+            split('\n', 1)
         expected = {'code': 404,
                     'error': {'message': expected_message,
                               'traceback': expected_traceback,
@@ -132,7 +135,8 @@ class FaultMiddlewareTest(HeatTestCase):
 
         wrapper = fault.FaultWrapper(None)
         msg = wrapper._error(remote_error)
-        expected_message, expected_traceback = str(remote_error).split('\n', 1)
+        expected_message, expected_traceback = six.text_type(remote_error).\
+            split('\n', 1)
         expected = {'code': 404,
                     'error': {'message': expected_message,
                               'traceback': expected_traceback,

heat/tests/test_hot.py

@@ -11,6 +11,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import six
+
 from heat.common import exception
 from heat.common import identifier
 from heat.common import template_format
@@ -412,7 +414,7 @@ class HOTemplateTest(HeatTestCase):
                                       snippet, tmpl, stack)
         self.assertEqual(
             'Argument to "get_file" must be a string',
-            str(notStrErr))
+            six.text_type(notStrErr))
 
     def test_get_file_missing_files(self):
         """Test get_file function with no matching key in files section."""
@@ -429,7 +431,7 @@ class HOTemplateTest(HeatTestCase):
         self.assertEqual(
             ('No content found in the "files" section for '
              'get_file path: file:///tmp/foo.yaml'),
-            str(missingErr))
+            six.text_type(missingErr))
 
     def test_get_file_nested_does_not_resolve(self):
         """Test get_file function does not resolve nested calls."""
@@ -465,11 +467,11 @@ class HOTemplateTest(HeatTestCase):
 
         #Hot template test
         keyError = self.assertRaises(KeyError, tmpl.__getitem__, 'parameters')
-        self.assertIn(err_str, str(keyError))
+        self.assertIn(err_str, six.text_type(keyError))
 
         #CFN template test
         keyError = self.assertRaises(KeyError, tmpl.__getitem__, 'Parameters')
-        self.assertIn(err_str, str(keyError))
+        self.assertIn(err_str, six.text_type(keyError))
 
     def test_parameters_section_not_iterable(self):
         """

heat/tests/test_template_format.py

@@ -16,6 +16,7 @@ import os
 import mock
 import testtools
 import yaml
+import six
 
 from heat.common import config
 from heat.common import exception
@@ -83,7 +84,7 @@ class YamlMinimalTest(HeatTestCase):
         parse_ex = self.assertRaises(ValueError,
                                      template_format.parse,
                                      tmpl_str)
-        self.assertIn(msg_str, str(parse_ex))
+        self.assertIn(msg_str, six.text_type(parse_ex))
 
     def test_long_yaml(self):
         template = {'HeatTemplateFormatVersion': '2012-12-12'}