1 files changed, 20 insertions, 0 deletions
diff --git a/tests/read_diferentes_offsets.py b/tests/read_diferentes_offsets.py
new file mode 100644
index 0000000..008ef05
--- /dev/null
+++ b/tests/read_diferentes_offsets.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+
+import sys
+import random
+random.seed("Yeah babe")
+
+text = open(sys.argv[1]).read()
+
+fin = open(sys.argv[1])
+for _ in xrange(1000):
+    offset = random.randint(0, len(text))
+    size = random.randint(0, min(len(text) - offset - 1, 10 * 1024))
+    fin.seek(offset)
+    chunk = fin.read(size)
+    assert len(chunk) <= size
+    assert len(chunk) != 0
+    if text[offset:offset + len(chunk)] != chunk:
+        s = "Read fails for file {} with offset {} and size {}"
+        raise IOError(s.format(sys.argv[1], offset, size))
+print "Success!"