user32/tests: Update DlgDirList tests.

dlls/user32/tests/listbox.c

@@ -1335,6 +1335,27 @@ static void test_listbox_dlgdir(void)
     ok (itemCount == itemCount_justDrives + itemCount_allDirs,
         "DlgDirList() incorrectly filled the listbox!\n");
 
+    /* Test behavior when loading folders from root with and without wildcard */
+    strcpy(pathBuffer, "C:\\");
+    res = DlgDirList(hWnd, pathBuffer, ID_TEST_LISTBOX, 0, DDL_DIRECTORY | DDL_EXCLUSIVE);
+    ok(res || broken(!res) /* NT4/W2K */, "DlgDirList failed to list C:\\ folders\n");
+    todo_wine ok(!strcmp(pathBuffer, "*") || broken(!res) /* NT4/W2K */,
+       "DlgDirList set the invalid path spec '%s', expected '*'\n", pathBuffer);
+
+    strcpy(pathBuffer, "C:\\*");
+    res = DlgDirList(hWnd, pathBuffer, ID_TEST_LISTBOX, 0, DDL_DIRECTORY | DDL_EXCLUSIVE);
+    ok(res || broken(!res) /* NT4/W2K */, "DlgDirList failed to list C:\\* folders\n");
+    ok(!strcmp(pathBuffer, "*") || broken(!res) /* NT4/W2K */,
+       "DlgDirList set the invalid path spec '%s', expected '*'\n", pathBuffer);
+
+    /* Try loading files from an invalid folder */
+    SetLastError(0xdeadbeef);
+    strcpy(pathBuffer, "C:\\INVALID$$DIR");
+    res = DlgDirList(hWnd, pathBuffer, ID_TEST_LISTBOX, 0, DDL_DIRECTORY | DDL_EXCLUSIVE);
+    todo_wine ok(!res, "DlgDirList should have failed with 0 but %d was returned\n", res);
+    todo_wine ok(GetLastError() == ERROR_NO_WILDCARD_CHARACTERS,
+       "GetLastError should return 0x589, got 0x%X\n",GetLastError());
+
 
     /* Now test DlgDirSelectEx() in normal operation */
     /* Fill with everything - drives, directory and all plain files. */