Use oslo_serialization.base64 to follow OpenStack Python3

This patch replaces python standard base64 library call to
oslo_serialization.base64 to follow OpenStack Python3 porting
standard [1].

Use base64 encoding takes 8-bit binary byte data and encodes it. On
Python3, A string is a sequence of Unicode characters thus base64 has
no idea what to do with Unicode data, it's not 8-bit[2]. We use
oslo_serialization.base64 for both python2 and python3.

[1] https://wiki.openstack.org/wiki/Python3
[2] http://stackoverflow.com/questions/8908287/base64-encoding-in-python-3

Change-Id: I1dafe878a71f37d223eaf58ea8e2e8c6b4422a14

1 files changed, 2 insertions, 2 deletions

diff --git a/ironic_python_agent/tests/unit/test_utils.py b/ironic_python_agent/tests/unit/test_utils.py
index ebfd3071..487e6aee 100644
--- a/ironic_python_agent/tests/unit/test_utils.py
+++ b/ironic_python_agent/tests/unit/test_utils.py
@@ -13,7 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import base64
 import errno
 import glob
 import io
@@ -27,6 +26,7 @@ import testtools
 from ironic_lib import utils as ironic_utils
 import mock
 from oslo_concurrency import processutils
+from oslo_serialization import base64
 from oslotest import base as test_base
 
 from ironic_python_agent import errors
@@ -386,7 +386,7 @@ class TestUtils(testtools.TestCase):
         io_dict = {'fake-name': io.BytesIO(bytes(contents))}
         data = utils.gzip_and_b64encode(io_dict=io_dict)
 
-        res = io.BytesIO(base64.b64decode(data))
+        res = io.BytesIO(base64.decode_as_bytes(data))
         with tarfile.open(fileobj=res) as tar:
             members = [(m.name, m.size) for m in tar]
             self.assertEqual([('fake-name', len(contents))], members)