Nikolay Sivov : oleaut32/tests: Add a test for VT_NULL input for VarFormatDateTime().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 41f456f3a48896a10392836a76008f916563c32d
URL:    https://gitlab.winehq.org/wine/wine/-/commit/41f456f3a48896a10392836a76008f9...

Author: Nikolay Sivov <nsivov(a)codeweavers.com>
Date:   Wed Nov 16 17:25:17 2022 +0300

oleaut32/tests: Add a test for VT_NULL input for VarFormatDateTime().

Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com>

---

 dlls/oleaut32/tests/varformat.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/dlls/oleaut32/tests/varformat.c b/dlls/oleaut32/tests/varformat.c
index 16506d8e97f..bc3b6c175f9 100644
--- a/dlls/oleaut32/tests/varformat.c
+++ b/dlls/oleaut32/tests/varformat.c
@@ -659,6 +659,19 @@ static void test_VarFormatCurrency(void)
     VariantClear(&in);
 }
 
+static void test_VarFormatDateTime(void)
+{
+    VARIANT in;
+    HRESULT hr;
+    BSTR str;
+
+    V_VT(&in) = VT_NULL;
+    str = (void *)0xdeadbeef;
+    hr = VarFormatDateTime(&in, 0, 0, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(!str, "Unexpected out string %p.\n", str);
+}
+
 START_TEST(varformat)
 {
     test_VarFormatNumber();
@@ -667,4 +680,5 @@ START_TEST(varformat)
     test_VarFormatFromTokens();
     test_GetAltMonthNames();
     test_VarFormatCurrency();
+    test_VarFormatDateTime();
 }