X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/f69e114cf6dbe51525e98ca30a52ef3dd4341167..b13876638cf57b400bd59513a0a1811b3d2993a1:/sdk/python/tests/test_arv_ws.py

diff --git a/sdk/python/tests/test_arv_ws.py b/sdk/python/tests/test_arv_ws.py
index 4a0b8238a7..521c46ee34 100644
--- a/sdk/python/tests/test_arv_ws.py
+++ b/sdk/python/tests/test_arv_ws.py
@@ -1,7 +1,8 @@
-#!/usr/bin/env python
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
 
 from __future__ import absolute_import
-import io
 import os
 import sys
 import tempfile
@@ -11,7 +12,7 @@ import arvados.errors as arv_error
 import arvados.commands.ws as arv_ws
 from . import arvados_testutil as tutil
 
-class ArvWsTestCase(unittest.TestCase):
+class ArvWsTestCase(unittest.TestCase, tutil.VersionChecker):
     def run_ws(self, args):
         return arv_ws.main(args)
 
@@ -20,10 +21,8 @@ class ArvWsTestCase(unittest.TestCase):
             self.run_ws(['-x=unknown'])
 
     def test_version_argument(self):
-        err = io.BytesIO()
-        out = io.BytesIO()
-        with tutil.redirected_streams(stdout=out, stderr=err):
+        with tutil.redirected_streams(
+                stdout=tutil.StringIO, stderr=tutil.StringIO) as (out, err):
             with self.assertRaises(SystemExit):
                 self.run_ws(['--version'])
-        self.assertEqual(out.getvalue(), '')
-        self.assertRegexpMatches(err.getvalue(), "[0-9]+\.[0-9]+\.[0-9]+")
+        self.assertVersionOutput(out, err)