[PATCH] user32: Add tests showing that MapWindowPoints, ClientToScreen and ScreenToClient never fail.

[Christian Costa]

---
 dlls/user32/tests/win.c |   49 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/dlls/user32/tests/win.c b/dlls/user32/tests/win.c
index e84824d..298ea07 100644
--- a/dlls/user32/tests/win.c
+++ b/dlls/user32/tests/win.c
@@ -7104,6 +7104,54 @@ todo_wine
     ok(ret, "UnregisterClass(my_window) failed\n");
 }
 
+static void test_client_screen(void)
+{
+    BOOL ret;
+    RECT rect;
+    POINT point;
+    HWND wnd;
+
+    ret = GetWindowRect(GetDesktopWindow(), &rect);
+    ok(ret, "GetWindowRect failed with %#x\n", GetLastError());
+
+    wnd = CreateWindowA("static", NULL, 0, 0, 0, rect.right / 2, rect.bottom / 2, 0, 0, 0, 0);
+    //SetWindowPos(wnd, NULL, 0, 0, rect.right / 2, rect.bottom / 2, 0);
+
+    /* Choose point inside the client area */
+    point.x = rect.right / 2 - 50;
+    point.y = rect.bottom / 2 - 50;
+    ret = ClientToScreen(wnd, &point);
+    ok(ret, "ClientToScreen failed with %#x\n", GetLastError());
+    ret = MapWindowPoints(wnd, NULL, &point, 1);
+    ok(ret, "MapWindowPoints failed with %#x\n", GetLastError());
+
+    /* Choose point outside the client area */
+    point.x = rect.right / 2 + 50;
+    point.y = rect.bottom / 2 + 50;
+    ret = ClientToScreen(wnd, &point);
+    ok(ret, "ClientToScreen failed with %#x\n", GetLastError());
+    ret = MapWindowPoints(wnd, NULL, &point, 1);
+    ok(ret, "MapWindowPoints failed with %#x\n", GetLastError());
+
+    /* Choose point inside the client area */
+    point.x = rect.right / 2 - 50;
+    point.y = rect.bottom / 2 - 50;
+    ret = ScreenToClient(wnd, &point);
+    ok(ret, "ScreenToClient failed with %#x\n", GetLastError());
+    ret = MapWindowPoints(NULL, wnd, &point, 1);
+    ok(ret, "MapWindowPoints failed with %#x\n", GetLastError());
+
+    /* Choose point outside the client area */
+    point.x = rect.right / 2 + 50;
+    point.y = rect.bottom / 2 + 50;
+    ret = ScreenToClient(wnd, &point);
+    ok(ret, "ScreenToClient failed with %#x\n", GetLastError());
+    ret = MapWindowPoints(NULL, wnd, &point, 1);
+    ok(ret, "MapWindowPoints failed with %#x\n", GetLastError());
+
+    DestroyWindow(wnd);
+}
+
 START_TEST(win)
 {
     HMODULE user32 = GetModuleHandleA( "user32.dll" );
@@ -7212,6 +7260,7 @@ START_TEST(win)
     test_shell_window();
     test_handles( hwndMain );
     test_winregion();
+    test_client_screen();
 
     /* add the tests above this line */
     if (hhook) UnhookWindowsHookEx(hhook);