Added a rudimentary test framework

Tests can be found in 'tests/test_blah.sh'
Tests can be run with 'make test'

tests/stats.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+import struct
+import sys
+import time
+import os
+import re
+
+def main():
+    with open('blocks/info') as file:
+        s = struct.unpack('<LLL4xQ', file.read())
+        print 'read_size: %d' % s[0]
+        print 'prog_size: %d' % s[1]
+        print 'erase_size: %d' % s[2]
+        print 'total_size: %d' % s[3]
+
+    print 'real_size: %d' % sum(
+        os.path.getsize(os.path.join('blocks', f))
+        for f in os.listdir('blocks') if re.match('\d+', f))
+
+    print 'runtime: %.3f' % (time.time() - os.stat('blocks').st_ctime)
+
+    with open('blocks/stats') as file:
+        s = struct.unpack('<QQQ', file.read())
+        print 'read_count: %d' % s[0]
+        print 'prog_count: %d' % s[1]
+        print 'erase_count: %d' % s[2]
+
+if __name__ == "__main__":
+    main(*sys.argv[1:])