Big refactor to become more PEP8 compliant.
Mostly focused on docstrings (''' → """), indentation, empty lines,
and superfluous parenthesis.
diff --git a/tests/test_strings.py b/tests/test_strings.py
index c4ee4c4..541b317 100644
--- a/tests/test_strings.py
+++ b/tests/test_strings.py
@@ -14,7 +14,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 
-'''Tests string operations.'''
+"""Tests string operations."""
 
 from __future__ import absolute_import
 
@@ -24,13 +24,12 @@
 
 from constants import unicode_string
 
-class StringTest(unittest.TestCase):
 
+class StringTest(unittest.TestCase):
     def setUp(self):
         (self.pub, self.priv) = rsa.newkeys(384)
 
     def test_enc_dec(self):
-
         message = unicode_string.encode('utf-8')
         print("\tMessage:   %s" % message)
 
@@ -41,4 +40,3 @@
         print("\tDecrypted: %s" % decrypted)
 
         self.assertEqual(message, decrypted)
-