Refactor web server (#667)

Fixs #674

unittests/util/MockRPCEngine.h

@@ -0,0 +1,73 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2023, the clio developers.
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL,  DIRECT,  INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#pragma once
+#include <rpc/common/Types.h>
+#include <webserver/Context.h>
+
+#include <boost/asio.hpp>
+#include <gtest/gtest.h>
+
+#include <string>
+
+struct MockAsyncRPCEngine
+{
+public:
+    MockAsyncRPCEngine()
+    {
+        work_.emplace(ioc_);  // make sure ctx does not stop on its own
+        runner_.emplace([this] { ioc_.run(); });
+    }
+
+    ~MockAsyncRPCEngine()
+    {
+        work_.reset();
+        ioc_.stop();
+        if (runner_->joinable())
+            runner_->join();
+    }
+
+    template <typename Fn>
+    bool
+    post(Fn&& func, std::string const& ip)
+    {
+        boost::asio::spawn(ioc_, [handler = std::move(func)](auto yield) mutable { handler(yield); });
+        return true;
+    }
+
+    MOCK_METHOD(void, notifyComplete, (std::string const&, std::chrono::microseconds const&), ());
+    MOCK_METHOD(void, notifyErrored, (std::string const&), ());
+    MOCK_METHOD(void, notifyForwarded, (std::string const&), ());
+    MOCK_METHOD(RPC::Result, buildResponse, (Web::Context const&), ());
+
+private:
+    boost::asio::io_context ioc_;
+    std::optional<boost::asio::io_service::work> work_;
+    std::optional<std::thread> runner_;
+};
+
+struct MockRPCEngine
+{
+public:
+    MOCK_METHOD(bool, post, (std::function<void(boost::asio::yield_context)>&&, std::string const&), ());
+    MOCK_METHOD(void, notifyComplete, (std::string const&, std::chrono::microseconds const&), ());
+    MOCK_METHOD(void, notifyErrored, (std::string const&), ());
+    MOCK_METHOD(void, notifyForwarded, (std::string const&), ());
+    MOCK_METHOD(RPC::Result, buildResponse, (Web::Context const&), ());
+};