[PATCH 1/1] do PickIconDlg regresstion tests

[Matthias Zorn]

From: Matthias Zorn

---
 dlls/shell32/tests/Makefile.in |  3 +-
 dlls/shell32/tests/dialogs.c   | 53 ++++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+), 1 deletion(-)
 create mode 100644 dlls/shell32/tests/dialogs.c

diff --git a/dlls/shell32/tests/Makefile.in b/dlls/shell32/tests/Makefile.in
index b7bc53524a2..20651b78d79 100644
--- a/dlls/shell32/tests/Makefile.in
+++ b/dlls/shell32/tests/Makefile.in
@@ -21,4 +21,5 @@ SOURCES = \
    shlfolder.c \
    shlview.c \
    string.c \
-	systray.c
+	systray.c \
+	dialogs.c
diff --git a/dlls/shell32/tests/dialogs.c b/dlls/shell32/tests/dialogs.c
new file mode 100644
index 00000000000..b9851b0708d
--- /dev/null
+++ b/dlls/shell32/tests/dialogs.c
@@ -0,0 +1,53 @@
+/*
+ * Unit tests for shell32 dialogs
+ *
+ * Copyright 2025 Matthias Zorn
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "wine/test.h"
+#include "winbase.h"
+#include "shlobj.h"
+
+static void test_PickIconDlg(void)
+{
+    WCHAR icon_path_filename[30];
+    int icon_index = 1;
+    int return_value;
+
+    lstrcpyW(icon_path_filename, L"shell32.dll");
+    SetLastError(0);
+
+    todo_wine {
+        return_value = PickIconDlg(NULL, icon_path_filename, ARRAYSIZE(icon_path_filename), NULL);
+        ok(return_value == 0, "PickIconDlg(NULL, ..., NULL) return_value failed\n");
+    }
+    
+    todo_wine {
+        return_value = PickIconDlg(NULL, NULL, ARRAYSIZE(icon_path_filename), &icon_index);
+        ok(return_value == 0, "PickIconDlg(NULL, NULL, ...) return_value failed\n");
+    }
+
+    todo_wine {
+        return_value = PickIconDlg((HWND) -1, icon_path_filename, ARRAYSIZE(icon_path_filename), &icon_index);
+        ok(return_value == 1, "PickIconDlg((HWND) -1, ...) return_value failed\n");
+    }
+}
+
+START_TEST(dialogs)
+{
+    test_PickIconDlg();
+}