[PATCH v6 2/3] gdi32/tests: Add wrong parameters ExtCreateRegion tests.

[Bartosz Kosiorek]

From: Bartosz Kosiorek

---
 dlls/gdi32/tests/clipping.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/dlls/gdi32/tests/clipping.c b/dlls/gdi32/tests/clipping.c
index ce66f9cad09..acfe73632f1 100644
--- a/dlls/gdi32/tests/clipping.c
+++ b/dlls/gdi32/tests/clipping.c
@@ -222,7 +222,17 @@ static void test_ExtCreateRegion(void)
     verify_region(hrgn, &empty_rect);
     DeleteObject(hrgn);

-    /* Cannot be smaller than sizeof(RGNDATAHEADER) */
+    /* Function should return NULL, if dwSize is larger than header size */
+    rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) + 1;
+    SetLastError(0xdeadbeef);
+    hrgn = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER), &rgn.data);
+    todo_wine
+    ok(!hrgn, "ExtCreateRegion should fail\n");
+    ok((GetLastError() == 0xdeadbeef), "Expected: 0xdeadbeef, got %lu\n", GetLastError());
+
+    rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
+
+    /* Number of bytes cannot be smaller than sizeof(RGNDATAHEADER) */
     SetLastError(0xdeadbeef);
     hrgn = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) - 1, &rgn.data);
     todo_wine
@@ -270,7 +280,6 @@ static void test_ExtCreateRegion(void)
     todo_wine
     ok(!hrgn, "ExtCreateRegion should fail\n");
     ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %lu\n", GetLastError());
-
 }

static void test_GetClipRgn(void)