tests: make libwallet_api_tests work under ctest, add tests

src/wallet/api/wallet.cpp

@@ -975,6 +975,16 @@ bool WalletImpl::init(const std::string &daemon_address, uint64_t upper_transact
     return doInit(daemon_address, proxy_address, upper_transaction_size_limit, use_ssl);
 }
 
+void WalletImpl::allowMismatchedDaemonVersion(bool allow_mismatch)
+{
+    m_wallet->allow_mismatched_daemon_version(allow_mismatch);
+}
+
+void WalletImpl::setRingDatabase(const std::string &path)
+{
+    m_wallet->set_ring_database(path);
+}
+
 void WalletImpl::setRefreshFromBlockHeight(uint64_t refresh_from_block_height)
 {
     if (checkBackgroundSync("cannot change refresh height"))

src/wallet/api/wallet.h

@@ -106,6 +106,8 @@ public:
     std::string filename() const override;
     std::string keysFilename() const override;
     bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, const std::string &daemon_username = "", const std::string &daemon_password = "", bool use_ssl = false, bool lightWallet = false, const std::string &proxy_address = "") override;
+    void allowMismatchedDaemonVersion(bool allow_mismatch) override;
+    void setRingDatabase(const std::string &path) override;
     bool connectToDaemon() override;
     ConnectionStatus connected() const override;
     void setTrustedDaemon(bool arg) override;

src/wallet/api/wallet2_api.h

@@ -546,6 +546,8 @@ struct Wallet
      * \return  - true on success
      */
     virtual bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, const std::string &daemon_username = "", const std::string &daemon_password = "", bool use_ssl = false, bool lightWallet = false, const std::string &proxy_address = "") = 0;
+    virtual void allowMismatchedDaemonVersion(bool allow_mismatch) = 0;
+    virtual void setRingDatabase(const std::string &path) = 0;
 
    /*!
     * \brief createWatchOnly - Creates a watch only wallet