Move ErrorClass definition to exceptions module

JIRA: YARDSTICK-1216

Change-Id: I82556e1d1b0c723221a58e188067cbce560b8338
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>
(cherry picked from commit 2bdda85878ed1507d1a91f69c3489bb9ba9d447d)

6 files changed, 46 insertions, 39 deletions

diff --git a/yardstick/common/exceptions.py b/yardstick/common/exceptions.py
index 233e250fc..0c6272c14 100644
--- a/yardstick/common/exceptions.py
+++ b/yardstick/common/exceptions.py
@@ -21,6 +21,16 @@ class ProcessExecutionError(RuntimeError):
         self.returncode = returncode
 
 
+class ErrorClass(object):
+
+    def __init__(self, *args, **kwargs):
+        if 'test' not in kwargs:
+            raise RuntimeError
+
+    def __getattr__(self, item):
+        raise AttributeError
+
+
 class YardstickException(Exception):
     """Base Yardstick Exception.
 
diff --git a/yardstick/error.py b/yardstick/error.py
index f22e7e049..cb4f306eb 100644
--- a/yardstick/error.py
+++ b/yardstick/error.py
@@ -26,13 +26,3 @@ class IncorrectSetup(Exception):
 class IncorrectNodeSetup(IncorrectSetup):
     """Class handles incorrect setup during setup"""
     pass
-
-
-class ErrorClass(object):
-
-    def __init__(self, *args, **kwargs):
-        if 'test' not in kwargs:
-            raise RuntimeError
-
-    def __getattr__(self, item):
-        raise AttributeError
diff --git a/yardstick/network_services/traffic_profile/http_ixload.py b/yardstick/network_services/traffic_profile/http_ixload.py
index 348056551..6cbdb8ab2 100644
--- a/yardstick/network_services/traffic_profile/http_ixload.py
+++ b/yardstick/network_services/traffic_profile/http_ixload.py
@@ -12,9 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import
-from __future__ import print_function
-
 import sys
 import os
 import logging
@@ -27,22 +24,14 @@ try:
 except ImportError:
     import json as jsonutils
 
-
-class ErrorClass(object):
-
-    def __init__(self, *args, **kwargs):
-        if 'test' not in kwargs:
-            raise RuntimeError
-
-    def __getattr__(self, item):
-        raise AttributeError
-
+from yardstick.common import exceptions
 
 try:
     from IxLoad import IxLoad, StatCollectorUtils
 except ImportError:
-    IxLoad = ErrorClass
-    StatCollectorUtils = ErrorClass
+    IxLoad = exceptions.ErrorClass
+    StatCollectorUtils = exceptions.ErrorClass
+
 
 LOG = logging.getLogger(__name__)
 CSV_FILEPATH_NAME = 'IxL_statResults.csv'
@@ -93,7 +82,7 @@ def validate_non_string_sequence(value, default=None, raise_exc=None):
     if isinstance(value, collections.Sequence) and not isinstance(value, str):
         return value
     if raise_exc:
-        raise raise_exc
+        raise raise_exc  # pylint: disable=raising-bad-type
     return default
 
 
@@ -218,7 +207,7 @@ class IXLOADHttpTest(object):
         #  ---- Remap ports ----
         try:
             self.reassign_ports(test, repository, self.ports_to_reassign)
-        except Exception:
+        except Exception:  # pylint: disable=broad-except
             LOG.exception("Exception occurred during reassign_ports")
 
         # -----------------------------------------------------------------------
diff --git a/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py b/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py
index 265d0b7a9..94ab69891 100644
--- a/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py
+++ b/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py
@@ -12,15 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import absolute_import
-
 import time
 import os
 import logging
 import sys
 
+from yardstick.common import exceptions
 from yardstick.common import utils
-from yardstick import error
 from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNFTrafficGen
 from yardstick.network_services.vnf_generic.vnf.sample_vnf import ClientResourceHelper
 from yardstick.network_services.vnf_generic.vnf.sample_vnf import Rfc2544ResourceHelper
@@ -36,7 +34,7 @@ sys.path.append(IXNET_LIB)
 try:
     from IxNet import IxNextgen
 except ImportError:
-    IxNextgen = error.ErrorClass
+    IxNextgen = exceptions.ErrorClass
 
 
 class IxiaRfc2544Helper(Rfc2544ResourceHelper):
diff --git a/yardstick/tests/unit/common/test_exceptions.py b/yardstick/tests/unit/common/test_exceptions.py
new file mode 100644
index 000000000..884015536
--- /dev/null
+++ b/yardstick/tests/unit/common/test_exceptions.py
@@ -0,0 +1,28 @@
+# Copyright 2018 Intel Corporation.
+#
+# 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.
+
+from yardstick.common import exceptions
+from yardstick.tests.unit import base as ut_base
+
+
+class ErrorClassTestCase(ut_base.BaseUnitTestCase):
+
+    def test_init(self):
+        with self.assertRaises(RuntimeError):
+            exceptions.ErrorClass()
+
+    def test_getattr(self):
+        error_instance = exceptions.ErrorClass(test='')
+        with self.assertRaises(AttributeError):
+            error_instance.get_name()
diff --git a/yardstick/tests/unit/common/test_utils.py b/yardstick/tests/unit/common/test_utils.py
index 9540a39e8..8c9f7799c 100644
--- a/yardstick/tests/unit/common/test_utils.py
+++ b/yardstick/tests/unit/common/test_utils.py
@@ -987,14 +987,6 @@ class TestUtils(unittest.TestCase):
         with self.assertRaises(RuntimeError):
             utils.validate_non_string_sequence(1, raise_exc=RuntimeError)
 
-    def test_error_class(self):
-        with self.assertRaises(RuntimeError):
-            yardstick.error.ErrorClass()
-
-        error_instance = yardstick.error.ErrorClass(test='')
-        with self.assertRaises(AttributeError):
-            error_instance.get_name()
-
 
 class TestUtilsIpAddrMethods(unittest.TestCase):