/*
 * Copyright 2014 Akihiro Sagawa
 *
 * 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 "wine/test.h"

#define lok ok_(__FILE__,line)
#define KEY_BASE "Software\\Wine\\reg_test"
#define REG_EXIT_SUCCESS 0
#define REG_EXIT_FAILURE 1
#define TODO_REG_TYPE    (0x0001u)
#define TODO_REG_SIZE    (0x0002u)
#define TODO_REG_DATA    (0x0004u)

#define run_reg_exe(c,r) run_reg_exe_(__LINE__,c,r)
static BOOL run_reg_exe_(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  = INVALID_HANDLE_VALUE;
    si.hStdOutput = INVALID_HANDLE_VALUE;
    si.hStdError  = INVALID_HANDLE_VALUE;

    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);
    lok(bret, "GetExitCodeProcess failed: %d\n", GetLastError());

    CloseHandle(pi.hThread);
    CloseHandle(pi.hProcess);
    return bret;
}

#define verify_reg(k,v,t,d,s,todo) verify_reg_(__LINE__,k,v,t,d,s,todo)
static void verify_reg_(unsigned line, HKEY hkey, const char* value,
                        DWORD exp_type, const void *exp_data, DWORD exp_size, DWORD todo)
{
    DWORD type, size;
    BYTE data[256];
    LONG err;

    size = sizeof(data);
    memset(data, 0xdd, size);
    err = RegQueryValueExA(hkey, value, NULL, &type, data, &size);
    lok(err == ERROR_SUCCESS, "RegQueryValueEx failed: got %d\n", err);
    if (err != ERROR_SUCCESS)
        return;

    if (todo & TODO_REG_TYPE)
        todo_wine lok(type == exp_type, "got wrong type %d, expected %d\n", type, exp_type);
    else
        lok(type == exp_type, "got wrong type %d, expected %d\n", type, exp_type);
    if (todo & TODO_REG_SIZE)
        todo_wine lok(size == exp_size, "got wrong size %d, expected %d\n", size, exp_size);
    else
        lok(size == exp_size, "got wrong size %d, expected %d\n", size, exp_size);
    if (todo & TODO_REG_DATA)
        todo_wine lok(memcmp(data, exp_data, size) == 0, "got wrong data\n");
    else
        lok(memcmp(data, exp_data, size) == 0, "got wrong data\n");
}

static void test_add(void)
{
    HKEY hkey, subkey;
    LONG err;
    DWORD r, dword, type, size;
    char buffer[22];

    run_reg_exe("reg add", &r);
    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);

    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE);
    ok(err == ERROR_SUCCESS || err == ERROR_FILE_NOT_FOUND, "got %d\n", err);

    err = RegOpenKeyExA(HKEY_CURRENT_USER, KEY_BASE, 0, KEY_READ, &hkey);
    ok(err == ERROR_FILE_NOT_FOUND, "got %d\n", err);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);

    err = RegOpenKeyExA(HKEY_CURRENT_USER, KEY_BASE, 0, KEY_READ, &hkey);
    ok(err == ERROR_SUCCESS, "key creation failed, got %d\n", err);

    /* Test empty type */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v emptyType /t \"\" /d WineTest /f", &r);
    todo_wine ok(r == REG_EXIT_SUCCESS || broken(r == REG_EXIT_FAILURE /* WinXP */),
        "got exit code %u\n", r);
    if (r == REG_EXIT_SUCCESS)
        todo_wine verify_reg(hkey, "emptyType", REG_SZ, "", 1, 0);
    else
        todo_wine win_skip("broken reg.exe detected\n");

    /* Test input key formats */
    run_reg_exe("reg add \\HKCU\\" KEY_BASE "\\keytest0 /f", &r);
    ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE "\\keytest0");
    ok(err == ERROR_FILE_NOT_FOUND, "got exit code %d\n", r);

    run_reg_exe("reg add \\\\HKCU\\" KEY_BASE "\\keytest1 /f", &r);
    ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE "\\keytest1");
    ok(err == ERROR_FILE_NOT_FOUND, "got exit code %d\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE "\\keytest2\\\\ /f", &r);
    ok(r == REG_EXIT_FAILURE || broken(r == REG_EXIT_SUCCESS /* WinXP */),
        "got exit code %u\n", r);
    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE "\\keytest2");
    ok(err == ERROR_FILE_NOT_FOUND || broken(err == ERROR_SUCCESS /* WinXP */),
        "got exit code %d\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE "\\keytest3\\ /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    err = RegOpenKeyExA(HKEY_CURRENT_USER, KEY_BASE "\\keytest3", 0, KEY_READ, &subkey);
    ok(err == ERROR_SUCCESS, "key creation failed, got %d\n", err);
    RegCloseKey(subkey);
    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE "\\keytest3");
    ok(err == ERROR_SUCCESS, "got exit code %d\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE "\\keytest4 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    err = RegOpenKeyExA(HKEY_CURRENT_USER, KEY_BASE "\\keytest4", 0, KEY_READ, &subkey);
    ok(err == ERROR_SUCCESS, "key creation failed, got %d\n", err);
    RegCloseKey(subkey);
    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE "\\keytest4");
    ok(err == ERROR_SUCCESS, "got exit code %d\n", r);

    /* REG_NONE */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v none0 /d deadbeef /t REG_NONE /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d\n", r);
    verify_reg(hkey, "none0", REG_NONE, "d\0e\0a\0d\0b\0e\0e\0f\0\0", 18, TODO_REG_SIZE);

    /* REG_SZ */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /d WineTest /f", &r);
    ok(r == REG_EXIT_SUCCESS || broken(r == REG_EXIT_FAILURE /* WinXP */),
       "got exit code %d, expected 0\n", r);
    if (r == REG_EXIT_SUCCESS)
        verify_reg(hkey, "", REG_SZ, "WineTest", 9, 0);
    else
        win_skip("broken reg.exe detected\n");

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v test /d deadbeef /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    verify_reg(hkey, "test", REG_SZ, "deadbeef", 9, 0);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v test /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    verify_reg(hkey, "test", REG_SZ, "", 1, TODO_REG_SIZE);

    run_reg_exe("reg add HKEY_CURRENT_USER\\" KEY_BASE " /ve /d WineTEST /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    verify_reg(hkey, "", REG_SZ, "WineTEST", 9, 0);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_SZ /v test2 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    verify_reg(hkey, "test2", REG_SZ, "", 1, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_SZ /v test3 /f /d \"\"", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    verify_reg(hkey, "test3", REG_SZ, "", 1, 0);

    /* REG_EXPAND_SZ */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v expand0 /t REG_EXpand_sz /d \"dead%PATH%beef\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "expand0", REG_EXPAND_SZ, "dead%PATH%beef", 15, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v expand1 /t REG_EXpand_sz /d \"dead^%PATH^%beef\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "expand1", REG_EXPAND_SZ, "dead^%PATH^%beef", 17, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_EXPAND_SZ /v expand2 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "expand2", REG_EXPAND_SZ, "", 1, TODO_REG_SIZE);

    run_reg_exe("reg add HKEY_CURRENT_USER\\" KEY_BASE " /ve /t REG_EXPAND_SZ /d WineTEST /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "", REG_EXPAND_SZ, "WineTEST", 9, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_EXPAND_SZ /v expand3 /f /d \"\"", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "expand3", REG_EXPAND_SZ, "", 1, TODO_REG_SIZE);

    /* REG_BINARY */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_BINARY /v bin0 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "bin0", REG_BINARY, buffer, 0, 0);

    run_reg_exe("reg add HKEY_CURRENT_USER\\" KEY_BASE " /ve /t REG_BINARY /d deadbeef /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    dword = 0xefbeadde;
    verify_reg(hkey, "", REG_BINARY, &dword, sizeof(DWORD), TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_BINARY /v bin1 /f /d 0xDeAdBeEf", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_BINARY /v bin2 /f /d x01", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_BINARY /v bin3 /f /d 01x", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_BINARY /v bin4 /f /d DeAdBeEf0DD", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    /* Remaining nibble prefixed */
    buffer[0] = 0x0d; buffer[1] = 0xea; buffer[2] = 0xdb;
    buffer[3] = 0xee; buffer[4] = 0xf0; buffer[5] = 0xdd;
    /* Remaining nibble suffixed on winXP */
    buffer[6] = 0xde; buffer[7] = 0xad; buffer[8] = 0xbe;
    buffer[9] = 0xef; buffer[10] = 0x0d; buffer[11] = 0xd0;
    size = 6;
    err = RegQueryValueExA(hkey, "bin4", NULL, &type, (void *) (buffer+12), &size);
    ok(err == ERROR_SUCCESS, "RegQueryValueEx failed: got %d\n", err);
    ok(type == REG_BINARY, "got wrong type %u\n", type);
    todo_wine ok(size == 6, "got wrong size %u\n", size);
    todo_wine ok(memcmp(buffer, buffer+12, 6) == 0 ||
        broken(memcmp(buffer+6, buffer+12, 6) == 0 /* WinXP */), "got wrong data\n");

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_BINARY /v bin5 /d \"\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "bin5", REG_BINARY, buffer, 0, 0);

    /* REG_DWORD */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_DWORD /f /d 12345678", &r);
    ok(r == REG_EXIT_SUCCESS || broken(r == REG_EXIT_FAILURE /* WinXP */),
       "got exit code %d, expected 0\n", r);
    dword = 12345678;
    if (r == REG_EXIT_SUCCESS)
        verify_reg(hkey, "", REG_DWORD, &dword, sizeof(dword), 0);
    else
        win_skip("broken reg.exe detected\n");

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword1 /t REG_DWORD /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE || broken(r == REG_EXIT_SUCCESS /* WinXP */),
       "got exit code %d, expected 0\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword2 /t REG_DWORD /d zzz /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword3 /t REG_DWORD /d deadbeef /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword4 /t REG_DWORD /d 123xyz /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword5 /t reg_dword /d 12345678 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    dword = 12345678;
    verify_reg(hkey, "dword5", REG_DWORD, &dword, sizeof(dword), 0);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword6 /t REG_DWORD /D 0123 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    size = sizeof(dword);
    err = RegQueryValueExA(hkey, "dword6", NULL, &type, (LPBYTE)&dword, &size);
    ok(err == ERROR_SUCCESS, "RegQueryValueEx failed: got %d\n", err);
    ok(type == REG_DWORD, "got wrong type %d, expected %d\n", type, REG_DWORD);
    ok(size == sizeof(DWORD), "got wrong size %d, expected %d\n", size, (int)sizeof(DWORD));
    todo_wine ok(dword == 123 || broken(dword == 0123 /* WinXP */),
                 "got wrong data %d, expected %d\n", dword, 123);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword7 /t reg_dword /d 0xabcdefg /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword8 /t REG_dword /d 0xdeadbeef /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    dword = 0xdeadbeef;
    verify_reg(hkey, "dword8", REG_DWORD, &dword, sizeof(dword),
               (sizeof(long) > sizeof(DWORD)) ? 0 : TODO_REG_DATA);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_DWORD /v dword9 /f /d -1", &r);
    todo_wine ok(r == REG_EXIT_FAILURE || broken(r == REG_EXIT_SUCCESS /* WinXP */), "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_DWORD /v dword10 /f /d -0x1", &r);
    todo_wine ok(r == REG_EXIT_FAILURE || broken(r == REG_EXIT_SUCCESS /* WinXP */), "got exit code %u\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /v dword8 /t REG_dword /d 0x01ffffffff /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE || broken(r == REG_EXIT_SUCCESS /* WinXP */), "got exit code %d\n", r);

    /* REG_DWORD_LITTLE_ENDIAN */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v DWORD_LE /t REG_DWORD_LITTLE_ENDIAN /d 456 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    dword = 456;
    verify_reg(hkey, "DWORD_LE", REG_DWORD_LITTLE_ENDIAN, &dword, sizeof(dword), 0);

    /* REG_DWORD_BIG_ENDIAN */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v DWORD_BE /t REG_DWORD_BIG_ENDIAN /d 456 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    dword = 456;
    verify_reg(hkey, "DWORD_BE", REG_DWORD_BIG_ENDIAN, &dword, sizeof(dword), TODO_REG_SIZE);
    /* REG_DWORD_BIG_ENDIAN is broken in every version of windows. It behaves like
     * an ordinary REG_DWORD - that is little endian. GG */

    /* REG_MULTI_SZ */
    run_reg_exe("reg add HKCU\\" KEY_BASE " /v multi0 /t REG_MULTI_SZ /d \"three\\0little\\0strings\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    memcpy(buffer, "three\0little\0strings\0", 22);
    verify_reg(hkey, "multi0", REG_MULTI_SZ, buffer, 22, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi1 /s \"#\" /d \"three#little#strings\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "multi1", REG_MULTI_SZ, buffer, 22, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi2 /d \"\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "multi2", REG_MULTI_SZ, &buffer[21], 1, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi3 /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "multi3", REG_MULTI_SZ, &buffer[21], 1, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi4 /s \"#\" /d \"threelittlestrings\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    verify_reg(hkey, "multi4", REG_MULTI_SZ, "threelittlestrings\0", 20, TODO_REG_SIZE);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi5 /s \"#randomgibberish\" /d \"three#little#strings\" /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi6 /s \"\\0\" /d \"three\\0little\\0strings\" /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi7 /s \"\" /d \"three#little#strings\" /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi8 /s \"#\" /d \"##\" /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi9 /s \"#\" /d \"two##strings\" /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi10 /s \"#\" /d \"#a\" /f", &r);
    todo_wine ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);

    run_reg_exe("reg add HKCU\\" KEY_BASE " /t REG_MULTI_SZ /v multi11 /s \"#\" /d \"a#\" /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %u\n", r);
    buffer[0]='a'; buffer[1]=0; buffer[2]=0;
    verify_reg(hkey, "multi11", REG_MULTI_SZ, buffer, 3, TODO_REG_SIZE);

    RegCloseKey(hkey);

    err = RegDeleteKeyA(HKEY_CURRENT_USER, KEY_BASE);
    ok(err == ERROR_SUCCESS, "got %d\n", err);
}

static void test_delete(void)
{
    HKEY hkey, hsubkey;
    LONG err;
    DWORD r;
    const DWORD deadbeef = 0xdeadbeef;

    run_reg_exe("reg delete", &r);
    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);

    err = RegCreateKeyExA(HKEY_CURRENT_USER, KEY_BASE, 0, NULL, 0, KEY_ALL_ACCESS, NULL, &hkey, NULL);
    ok(err == ERROR_SUCCESS, "got %d\n", err);

    err = RegSetValueExA(hkey, "foo", 0, REG_DWORD, (LPBYTE)&deadbeef, sizeof(deadbeef));
    ok(err == ERROR_SUCCESS, "got %d\n" ,err);

    err = RegSetValueExA(hkey, "bar", 0, REG_DWORD, (LPBYTE)&deadbeef, sizeof(deadbeef));
    ok(err == ERROR_SUCCESS, "got %d\n" ,err);

    err = RegSetValueExA(hkey, "", 0, REG_DWORD, (LPBYTE)&deadbeef, sizeof(deadbeef));
    ok(err == ERROR_SUCCESS, "got %d\n" ,err);

    err = RegCreateKeyExA(hkey, "subkey", 0, NULL, 0, KEY_ALL_ACCESS, NULL, &hsubkey, NULL);
    ok(err == ERROR_SUCCESS, "got %d\n" ,err);
    RegCloseKey(hsubkey);

    run_reg_exe("reg delete HKCU\\" KEY_BASE " /v bar /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    err = RegQueryValueExA(hkey, "bar", NULL, NULL, NULL, NULL);
    ok(err == ERROR_FILE_NOT_FOUND, "got %d\n", err);

    run_reg_exe("reg delete HKCU\\" KEY_BASE " /ve /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    err = RegQueryValueExA(hkey, "", NULL, NULL, NULL, NULL);
    todo_wine ok(err == ERROR_FILE_NOT_FOUND, "got %d\n", err);

    run_reg_exe("reg delete HKCU\\" KEY_BASE " /va /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    err = RegQueryValueExA(hkey, "foo", NULL, NULL, NULL, NULL);
    ok(err == ERROR_FILE_NOT_FOUND, "got %d\n", err);
    err = RegOpenKeyExA(hkey, "subkey", 0, KEY_READ, &hsubkey);
    ok(err == ERROR_SUCCESS, "got %d\n", err);
    RegCloseKey(hsubkey);
    RegCloseKey(hkey);

    run_reg_exe("reg delete HKCU\\" KEY_BASE " /f", &r);
    ok(r == REG_EXIT_SUCCESS, "got exit code %d, expected 0\n", r);
    err = RegOpenKeyExA(HKEY_CURRENT_USER, KEY_BASE, 0, KEY_READ, &hkey);
    ok(err == ERROR_FILE_NOT_FOUND, "got %d\n", err);

    run_reg_exe("reg delete HKCU\\" KEY_BASE " /f", &r);
    ok(r == REG_EXIT_FAILURE, "got exit code %u\n", r);
}

static void test_query(void)
{
    DWORD r;
    run_reg_exe("reg Query", &r);
    ok(r == REG_EXIT_FAILURE, "got exit code %d, expected 1\n", r);
}

START_TEST(reg)
{
    DWORD r;
    if (!run_reg_exe("reg.exe /?", &r)) {
        win_skip("reg.exe not available, skipping reg.exe tests\n");
        return;
    }

    test_add();
    test_delete();
    test_query();
}