[PATCH v4 3/3] comctl32/tests: Add tests for NULL strings with edit control WM_GETTEXT message.

[Aida Jonikienė]

From: Aida Jonikienė

---
 dlls/comctl32/tests/edit.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/dlls/comctl32/tests/edit.c b/dlls/comctl32/tests/edit.c
index bce0215ef19..92017c046b2 100644
--- a/dlls/comctl32/tests/edit.c
+++ b/dlls/comctl32/tests/edit.c
@@ -1470,6 +1470,19 @@ static void test_edit_control_6(void)
     ok(ret == strlen(str), "Expected %s, got len %ld\n", str, ret);
     ok(!strcmp(buf, str), "Expected %s, got %s\n", str, buf);

+    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);
+
+    if (0) /* Crashes on Windows. */
+    {
+       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);
     todo_wine