Separate unit tests and integration tests (#1393)

Fixes #1391

tests/common/util/TestWsServer.hpp

@@ -0,0 +1,70 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of clio: https://github.com/XRPLF/clio
+    Copyright (c) 2024, 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 "util/requests/Types.hpp"
+
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/ip/tcp.hpp>
+#include <boost/asio/spawn.hpp>
+#include <boost/beast/core/tcp_stream.hpp>
+#include <boost/beast/websocket/stream.hpp>
+
+#include <expected>
+#include <functional>
+#include <optional>
+#include <string>
+
+class TestWsConnection {
+    boost::beast::websocket::stream<boost::beast::tcp_stream> ws_;
+
+public:
+    using SendCallback = std::function<void()>;
+    using ReceiveCallback = std::function<void(std::string)>;
+
+    TestWsConnection(boost::beast::websocket::stream<boost::beast::tcp_stream> wsStream);
+
+    // returns error message if error occurs
+    std::optional<std::string>
+    send(std::string const& message, boost::asio::yield_context yield);
+
+    // returns nullopt if the connection is closed
+    std::optional<std::string>
+    receive(boost::asio::yield_context yield);
+
+    std::optional<std::string>
+    close(boost::asio::yield_context yield);
+};
+
+class TestWsServer {
+    boost::asio::ip::tcp::acceptor acceptor_;
+
+public:
+    TestWsServer(boost::asio::io_context& context, std::string const& host, int port);
+
+    std::expected<TestWsConnection, util::requests::RequestError>
+    acceptConnection(boost::asio::yield_context yield);
+
+    void
+    acceptConnectionAndDropIt(boost::asio::yield_context yield);
+
+    boost::asio::ip::tcp::socket
+    acceptConnectionWithoutHandshake(boost::asio::yield_context yield);
+};