From 63e4230c3865f6b15538b61fbecd5d0286b1f0a9 Mon Sep 17 00:00:00 2001
From: Ezio Melotti <ezio.melotti@gmail.com>
Date: Sat, 7 May 2011 19:47:48 +0300
Subject: [PATCH] #5421: add tests.

---
 Lib/test/test_socket.py | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 67c541388bf..6a9497bc7d2 100644
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -274,6 +274,36 @@ class GeneralModuleTests(unittest.TestCase):
         self.assertRaises(socket.error, raise_gaierror,
                               "Error raising socket exception.")
 
+    def testSendtoErrors(self):
+        # Testing that sendto doens't masks failures. See #10169.
+        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.addCleanup(s.close)
+        s.bind(('', 0))
+        sockname = s.getsockname()
+        # 2 args
+        with self.assertRaises(TypeError):
+            s.sendto('\u2620', sockname)
+        with self.assertRaises(TypeError):
+            s.sendto(5j, sockname)
+        with self.assertRaises(TypeError):
+            s.sendto(b'foo', None)
+        # 3 args
+        with self.assertRaises(TypeError):
+            s.sendto('\u2620', 0, sockname)
+        with self.assertRaises(TypeError):
+            s.sendto(5j, 0, sockname)
+        with self.assertRaises(TypeError):
+            s.sendto(b'foo', 0, None)
+        with self.assertRaises(TypeError):
+            s.sendto(b'foo', 'bar', sockname)
+        with self.assertRaises(TypeError):
+            s.sendto(b'foo', None, None)
+        # wrong number of args
+        with self.assertRaises(TypeError):
+            s.sendto(b'foo')
+        with self.assertRaises(TypeError):
+            s.sendto(b'foo', 0, sockname, 4)
+
     def testCrucialConstants(self):
         # Testing for mission critical constants
         socket.AF_INET