diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..431639f
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+all:
+	nosetests
diff --git a/nilmdb/fileinterval.py b/nilmdb/fileinterval.py
index a3082a6..86ce6a5 100644
--- a/nilmdb/fileinterval.py
+++ b/nilmdb/fileinterval.py
@@ -25,7 +25,7 @@ class FileInterval(Interval):
         self.end_offset = end_offset
 
     def __setattr__(self, name, value):
-        
+        pass
 
     def subset(self, start, end):
         """Return a new Interval that is a subset of this one"""
diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 0000000..3f68a06
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,2 @@
+all:
+	python test-struct-pack.py
diff --git a/test/test-struct-pack.py b/test/test-struct-pack.py
new file mode 100644
index 0000000..fc46c12
--- /dev/null
+++ b/test/test-struct-pack.py
@@ -0,0 +1,8 @@
+import struct
+import mmap
+
+f = open("test.dat", "rb+")
+mm = mmap.mmap(f.fileno(),3)
+
+print len(mm)
+print "first 3 bytes: " + mm[0:3];
diff --git a/test/test.dat b/test/test.dat
new file mode 100644
index 0000000..672b4b5
--- /dev/null
+++ b/test/test.dat
@@ -0,0 +1 @@
+
















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