Function testBackup

POSIX/demo/demo.cpp:495–521

}

void testBackup() {
    string rootDir = "/tmp/mmkv_backup";
    string mmapID = "test/Encrypt";
    string aesKey = "cryptKey";
    auto ret = MMKV::backupOneToDirectory(mmapID, rootDir);
    printf("backup one return %d\n", ret);
    if (ret) {
        auto mmkv = MMKV::mmkvWithID(mmapID, MMKV_SINGLE_PROCESS, &aesKey, &rootDir);
        cout << "after backup allKeys: " << ::to_string(mmkv->allKeys()) << endl;
    }

    auto count = MMKV::backupAllToDirectory(rootDir);
    printf("backup all count: %zu\n", count);
    if (count > 0) {
        auto backupMMKV = MMKV::mmkvWithID(mmapID, MMKV_SINGLE_PROCESS, &aesKey, &rootDir);
        cout << "check on backup [" << backupMMKV->mmapID() << "] allKeys: " << ::to_string(backupMMKV->allKeys(), ",\n") << endl;

        backupMMKV = MMKV::mmkvWithID("brutleTest", MMKV_SINGLE_PROCESS, nullptr, &rootDir);
        cout << "check on backup [" << backupMMKV->mmapID() << "] allKeys count: " << backupMMKV->count() << endl;

        backupMMKV = MMKV::mmkvWithID("process_test", MMKV_MULTI_PROCESS, nullptr, &rootDir);
        cout << "check on backup [" << backupMMKV->mmapID() << "] allKeys count: " << backupMMKV->count() << endl;

        backupMMKV = MMKV::mmkvWithID("thread_test1", MMKV_SINGLE_PROCESS, nullptr, &rootDir);
        cout << "check on backup [" << backupMMKV->mmapID() << "] allKeys count: " << backupMMKV->count() << endl;
    }
}

void testRestore() {
    string rootDir = "/tmp/mmkv_backup";