Tests are now functional (only running without syntax errors) on Python 3 too.
diff --git a/tests/py3kconstants.py b/tests/py3kconstants.py
new file mode 100644
index 0000000..83b6712
--- /dev/null
+++ b/tests/py3kconstants.py
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+unicode_string = "Euro=\u20ac ABCDEFGHIJKLMNOPQRSTUVWXYZ"