diff --git a/.travis.yml b/.travis.yml
index b0502fb..2f2a5fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ notifications:
 language: python
 
 python:
-    - "2.6"
     - "2.7"
     - "3.3"
     - "3.4"
@@ -20,7 +19,7 @@ matrix:
 
 install:
     - "python setup.py install"
-    - "pip install pyte coverage"
+    - "pip install pyte coverage hypothesis"
 
 script:
     - nosetests tests
diff --git a/tests/test_properties.py b/tests/test_properties.py
new file mode 100644
index 0000000..5eef9a0
--- /dev/null
+++ b/tests/test_properties.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import sys
+import unittest
+
+from hypothesis import given
+from hypothesis.strategies import text
+
+from curtsies.formatstring import fmtstr
+
+
+if sys.version_info[0] == 2:
+    str = unicode
+
+
+class TestFmtStrRendering(unittest.TestCase):
+    @given(text())
+    def test_parse_roundtrip(self, s):
+        f = fmtstr(s)
+        self.assertEqual(f, fmtstr(str(f)))
+
+    @given(text())
+    def test_parse_roundtrip_as_string(self, s):
+        f = fmtstr(s)
+        self.assertEqual(str(f), str(fmtstr(str(f))))
+