test_utils: Add unit test for ryu.utils

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

ryu/tests/unit/test_utils.py

@@ -0,0 +1,49 @@
+# Copyright (C) 2014 Nippon Telegraph and Telephone 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.
+
+import unittest
+import logging
+from nose.tools import eq_
+
+from ryu import utils
+
+LOG = logging.getLogger(__name__)
+
+
+class Test_utils(unittest.TestCase):
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_hex_array_string(self):
+        ''' Test string conversion into array of hexes '''
+        expected_result = '0x1 0x2 0x3 0x4'
+        data = '\01\02\03\04'
+        eq_(expected_result, utils.hex_array(data))
+
+    def test_hex_array_bytearray(self):
+        ''' Test bytearray conversion into array of hexes '''
+        expected_result = '0x1 0x2 0x3 0x4'
+        data = bytearray('\01\02\03\04')
+        eq_(expected_result, utils.hex_array(data))
+
+    def test_hex_array_invalid(self):
+        ''' Test conversion into array of hexes with invalid data type '''
+        expected_result = None
+        data = 1234
+        eq_(expected_result, utils.hex_array(data))