--- a/tests/test_atomicwrite.py	Fri Jan 02 13:08:39 2015 -0800
+++ b/tests/test_atomicwrite.py	Fri Jan 02 13:22:09 2015 -0800
@@ -4,8 +4,8 @@
 unit tests for AtomicWrite
 """
 
+import atomic
 import os
-import sys
 import tempfile
 import unittest
 
@@ -14,6 +14,9 @@
     def test_atomicwrite(self):
         tf = tempfile.mktemp()
         self.assertFalse(os.path.exists(tf))
+        atomic.write('foo', tf)
+        self.assertTrue(os.path.exists(tf))
+        self.assertEqual(open(tf, 'r').read(), 'foo')
 
 if __name__ == '__main__':
     unittest.main()