[PATCH v6 4/5] user32/tests: Add tests for NULL strings with edit control GETTEXT message.

[Aida Jonikienė]

From: Aida Jonikienė

Most of these crash on Windows.
---
 dlls/user32/tests/edit.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/dlls/user32/tests/edit.c b/dlls/user32/tests/edit.c
index bbde9b16616..99725b27eba 100644
--- a/dlls/user32/tests/edit.c
+++ b/dlls/user32/tests/edit.c
@@ -1394,6 +1394,20 @@ static void test_edit_control_6(void)
     ret = SendMessageA(hWnd, WM_GETTEXT, MAXLEN, (LPARAM)buf);
     ok(ret == strlen(str), "Expected %s, got len %ld\n", str, ret);
     ok(!strcmp(buf, str), "Expected %s, got %s\n", str, buf);
+
+    if (0) /* Crashes on Windows. */
+    {
+       ret = SendMessageA(hWnd, WM_GETTEXT, MAXLEN, (LPARAM)NULL);
+       ok(ret == 0, "Expected 0, got len %ld\n", ret);
+       ret = SendMessageA(hWnd, WM_GETTEXT, 0, (LPARAM)NULL);
+       ok(ret == 0, "Expected 0, got len %ld\n", ret);
+
+       ret = SendMessageW(hWnd, WM_GETTEXT, MAXLEN, (LPARAM)NULL);
+       ok(ret == 0, "Expected 0, got len %ld\n", ret);
+       ret = SendMessageW(hWnd, WM_GETTEXT, 0, (LPARAM)NULL);
+       ok(ret == 0, "Expected 0, got len %ld\n", ret);
+    }
+
     buf[0] = 0;
     ret = SendMessageA(hWnd, WM_DESTROY, 0, 0);
     ok(ret == 0, "Expected 0, got %ld\n", ret);