Issue #20175: Converted the _io module to Argument Clinic.

2 files changed, 22 insertions, 7 deletions

diff --git a/Lib/test/test_fileio.py b/Lib/test/test_fileio.py
index 35b30a6..0f8310c 100644
--- a/Lib/test/test_fileio.py
+++ b/Lib/test/test_fileio.py
@@ -190,9 +190,9 @@ class AutoFileTests:
         self.assertTrue(f.closed)
 
     def testMethods(self):
-        methods = ['fileno', 'isatty', 'read',
-                   'tell', 'truncate', 'seekable',
-                   'readable', 'writable']
+        methods = ['fileno', 'isatty', 'seekable', 'readable', 'writable',
+                   'read', 'readall', 'readline', 'readlines',
+                   'tell', 'truncate', 'flush']
 
         self.f.close()
         self.assertTrue(self.f.closed)
@@ -201,9 +201,15 @@ class AutoFileTests:
             method = getattr(self.f, methodname)
             # should raise on closed file
             self.assertRaises(ValueError, method)
-        self.assertRaises(ValueError, self.f.readinto, bytearray())
-        self.assertRaises(ValueError, self.f.seek, 0, os.SEEK_CUR)
+
+        self.assertRaises(TypeError, self.f.readinto)
+        self.assertRaises(ValueError, self.f.readinto, bytearray(1))
+        self.assertRaises(TypeError, self.f.seek)
+        self.assertRaises(ValueError, self.f.seek, 0)
+        self.assertRaises(TypeError, 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
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index 02f7427..5b7cfc9 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -2163,6 +2163,17 @@ class TextIOWrapperTest(unittest.TestCase):
         self.assertRaises(TypeError, t.__init__, b, newline=42)
         self.assertRaises(ValueError, t.__init__, b, newline='xyzzy')
 
+    def test_uninitialized(self):
+        t = self.TextIOWrapper.__new__(self.TextIOWrapper)
+        del t
+        t = self.TextIOWrapper.__new__(self.TextIOWrapper)
+        self.assertRaises(Exception, repr, t)
+        self.assertRaisesRegex((ValueError, AttributeError),
+                               'uninitialized|has no attribute',
+                               t.read, 0)
+        t.__init__(self.MockRawIO())
+        self.assertEqual(t.read(0), '')
+
     def test_non_text_encoding_codecs_are_rejected(self):
         # Ensure the constructor complains if passed a codec that isn't
         # marked as a text encoding
@@ -3024,8 +3035,6 @@ class CTextIOWrapperTest(TextIOWrapperTest):
         r = self.BytesIO(b"\xc3\xa9\n\n")
         b = self.BufferedReader(r, 1000)
         t = self.TextIOWrapper(b)
-        self.assertRaises(TypeError, t.__init__, b, newline=42)
-        self.assertRaises(ValueError, t.read)
         self.assertRaises(ValueError, t.__init__, b, newline='xyzzy')
         self.assertRaises(ValueError, t.read)