Index: fact/tools/pyscripts/pyfact/test_fir_filter.py
===================================================================
--- fact/tools/pyscripts/pyfact/test_fir_filter.py	(revision 13331)
+++ fact/tools/pyscripts/pyfact/test_fir_filter.py	(revision 13331)
@@ -0,0 +1,23 @@
+#!/usr/bin/python -tt
+#
+# Dominik Neise, Werner Lustermann
+# TU Dortmund, ETH Zurich
+#
+import numpy as np
+from scipy import signal
+import fir_filter
+
+def test_SlidingAverage():
+    """ test the sliding average function
+        A constant input should result in a constant and equal output
+    """
+    safilter = fir_filter.SlidingAverage(8)
+    signal = np.ones(100) * 3.0
+    filtered = safilter(signal)
+    assert (filtered == signal).all()
+    
+
+if __name__ == '__main__':
+    """ conduct the tests """
+    
+    test_SlidingAverage()