[1/2] user32/tests: add SendMessageCallback with NULL callback test

[Fabian Bieler]

Windows silently ignores NULL pointers supplied to SendMessageCallback as 
callback function.
This patch adds a disabled testcase for this behavior.
-------------- next part --------------
From 50a9a42131c985e2f0b379fa197b747a14aa027b Mon Sep 17 00:00:00 2001
From: Fabian Bieler <der.fabe at gmx.net>
Date: Sat, 24 Feb 2007 19:45:34 +0100
Subject: [PATCH] [1/2] user32/tests: add SendMessageCallback with NULL callback test

---
 dlls/user32/tests/msg.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/dlls/user32/tests/msg.c b/dlls/user32/tests/msg.c
index f45a059..39bb94a 100644
--- a/dlls/user32/tests/msg.c
+++ b/dlls/user32/tests/msg.c
@@ -8889,6 +8889,30 @@ static void test_dialog_messages(void)
 #undef check_selection
 }
 
+static void test_nullCallback(void)
+{
+    HWND hwnd;
+    MSG msg;
+
+    if(0)
+    {
+        hwnd = CreateWindowExA(0, "TestWindowClass", "Test overlapped", WS_OVERLAPPEDWINDOW,
+                               100, 100, 200, 200, 0, 0, 0, NULL);
+        ok (hwnd != 0, "Failed to create overlapped window\n");
+
+        ShowWindow(hwnd, SW_SHOW);
+        UpdateWindow( hwnd );
+
+        SendMessageCallbackA(hwnd,WM_NULL,0,0,NULL,0);
+
+        while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE )) DispatchMessage( &msg );
+
+        ok(1, "\n");
+
+        DestroyWindow(hwnd);
+    }
+}
+
 START_TEST(msg)
 {
     BOOL ret;
@@ -8959,6 +8983,7 @@ START_TEST(msg)
     test_SetWindowRgn();
     test_sys_menu();
     test_dialog_messages();
+    test_nullCallback();
 
     UnhookWindowsHookEx(hCBT_hook);
     if (pUnhookWinEvent)
-- 
1.4.4.1