net: Correct error code for stopping non existing service

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55859

programs/net/net.c

@@ -365,7 +365,7 @@ int __cdecl wmain(int argc, const WCHAR* argv[])
         if(arg_is(argv[2], L"/help"))
             output_string(STRING_STOP_USAGE);
         else if(!net_service(NET_STOP, argv[2]))
-            return 1;
+            return 2;
     }
     else if(arg_is(argv[1], L"use"))
     {

programs/net/tests/Makefile.in

@@ -0,0 +1,4 @@
+TESTDLL   = net.exe
+
+SOURCES = \
+	net.c

programs/net/tests/net.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2024 Fabian Maurer
+ *
+ * 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 <windows.h>
+#include <stdio.h>
+#include "wine/test.h"
+
+static HANDLE nul_file;
+
+#define check_exit_code(x) ok(r == (x), "got exit code %ld, expected %d\n", r, (x))
+
+/* Copied and modified from the reg.exe tests */
+#define run_net_exe(c,r) run_net_exe_(__FILE__,__LINE__,c,r)
+static BOOL run_net_exe_(const char *file, unsigned line, const char *cmd, DWORD *rc)
+{
+    STARTUPINFOA si = {sizeof(STARTUPINFOA)};
+    PROCESS_INFORMATION pi;
+    BOOL bret;
+    DWORD ret;
+    char cmdline[256];
+
+    si.dwFlags = STARTF_USESTDHANDLES;
+    si.hStdInput  = nul_file;
+    si.hStdOutput = nul_file;
+    si.hStdError  = nul_file;
+
+    strcpy(cmdline, cmd);
+    if (!CreateProcessA(NULL, cmdline, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
+        return FALSE;
+
+    ret = WaitForSingleObject(pi.hProcess, 10000);
+    if (ret == WAIT_TIMEOUT)
+        TerminateProcess(pi.hProcess, 1);
+
+    bret = GetExitCodeProcess(pi.hProcess, rc);
+    ok_(__FILE__, line)(bret, "GetExitCodeProcess failed: %ld\n", GetLastError());
+
+    CloseHandle(pi.hThread);
+    CloseHandle(pi.hProcess);
+    return bret;
+}
+
+static void test_stop(void)
+{
+    DWORD r;
+
+    /* Stop non existing service */
+
+    run_net_exe("net stop non-existing-service", &r);
+    check_exit_code(2);
+}
+
+START_TEST(net)
+{
+    SECURITY_ATTRIBUTES secattr = {sizeof(SECURITY_ATTRIBUTES), NULL, TRUE};
+
+    nul_file = CreateFileA("NUL", GENERIC_READ | GENERIC_WRITE, 0, &secattr, OPEN_EXISTING,
+                           FILE_ATTRIBUTE_NORMAL, NULL);
+
+    test_stop();
+
+    CloseHandle(nul_file);
+}