Backported tests from issue #20175.

1 files changed, 12 insertions, 3 deletions

diff --git a/Lib/test/test_fileio.py b/Lib/test/test_fileio.py
index c37482e..fe5da69 100644
--- a/Lib/test/test_fileio.py
+++ b/Lib/test/test_fileio.py
@@ -126,9 +126,9 @@ class AutoFileTests(unittest.TestCase):
         self.assertTrue(f.closed)
 
     def testMethods(self):
-        methods = ['fileno', 'isatty', 'read', 'readinto',
-                   'seek', 'tell', 'truncate', 'write', 'seekable',
-                   'readable', 'writable']
+        methods = ['fileno', 'isatty', 'seekable', 'readable', 'writable',
+                   'read', 'readall', 'readline', 'readlines',
+                   'tell', 'truncate', 'flush']
 
         self.f.close()
         self.assertTrue(self.f.closed)
@@ -138,6 +138,15 @@ class AutoFileTests(unittest.TestCase):
             # should raise on closed file
             self.assertRaises(ValueError, method)
 
+        self.assertRaises(ValueError, self.f.readinto) # XXX should be TypeError?
+        self.assertRaises(ValueError, self.f.readinto, bytearray(1))
+        self.assertRaises(ValueError, self.f.seek)
+        self.assertRaises(ValueError, self.f.seek, 0)
+        self.assertRaises(ValueError, self.f.write)
+        self.assertRaises(ValueError, self.f.write, b'')
+        self.assertRaises(TypeError, self.f.writelines)
+        self.assertRaises(ValueError, self.f.writelines, b'')
+
     def testOpendir(self):
         # Issue 3703: opening a directory should fill the errno
         # Windows always returns "[Errno 13]: Permission denied