1 files changed, 15 insertions, 0 deletions
diff --git a/Lib/test/test_file.py b/Lib/test/test_file.py
index c00874d..33a923d 100644
--- a/Lib/test/test_file.py
+++ b/Lib/test/test_file.py
@@ -1,4 +1,5 @@
 import os
+from array import array
 
 from test_support import verify, TESTFN
 from UserList import UserList
@@ -13,6 +14,13 @@ buf = f.read()
 f.close()
 verify(buf == '12')
 
+# verify readinto
+a = array('c', 'x'*10)
+f = open(TESTFN, 'rb')
+n = f.readinto(a)
+f.close()
+verify(buf == a.tostring()[:n])
+
 # verify writelines with integers
 f = open(TESTFN, 'wb')
 try:
@@ -69,6 +77,13 @@ if f.isatty():
 if f.closed:
     raise TestError, 'file.closed should be false'
 
+try:
+    f.readinto("")
+except TypeError:
+    pass
+else:
+    raise TestError, 'file.readinto("") should raise a TypeError'
+
 f.close()
 if not f.closed:
     raise TestError, 'file.closed should be true'