[Lldb-commits] [lldb] [lldb] Add Model Context Protocol (MCP) support to LLDB (PR #143628)

[Pavel Labath via lldb-commits]

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@@ -0,0 +1,195 @@
+//===-- ProtocolServerMCPTest.cpp -----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "Plugins/Platform/MacOSX/PlatformRemoteMacOSX.h"
+#include "Plugins/Protocol/MCP/ProtocolServerMCP.h"
+#include "TestingSupport/Host/SocketTestUtilities.h"
+#include "TestingSupport/SubsystemRAII.h"
+#include "lldb/Core/ProtocolServer.h"
+#include "lldb/Host/FileSystem.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Host/Socket.h"
+#include "llvm/Testing/Support/Error.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace lldb;
+using namespace lldb_private;
+using namespace lldb_private::mcp::protocol;
+
+namespace {
+class TestProtocolServerMCP : public lldb_private::mcp::ProtocolServerMCP {
+public:
+  using ProtocolServerMCP::AddTool;
+  using ProtocolServerMCP::GetSocket;
+  using ProtocolServerMCP::ProtocolServerMCP;
+};
+
+class TestJSONTransport : public lldb_private::JSONRPCTransport {
+public:
+  using JSONRPCTransport::JSONRPCTransport;
+  using JSONRPCTransport::ReadImpl;
+  using JSONRPCTransport::WriteImpl;
+};
+
+class TestTool : public mcp::Tool {
+public:
+  using mcp::Tool::Tool;
+
+  virtual mcp::protocol::TextResult
+  Call(const llvm::json::Value &args) override {
+    std::string argument;
+    if (const json::Object *args_obj = args.getAsObject()) {
+      if (const json::Value *s = args_obj->get("arguments")) {
+        argument = s->getAsString().value_or("");
+      }
+    }
+
+    mcp::protocol::TextResult text_result;
+    text_result.content.emplace_back(mcp::protocol::TextContent{{argument}});
+    return text_result;
+  }
+};
+
+class ProtocolServerMCPTest : public ::testing::Test {
+public:
+  SubsystemRAII<FileSystem, HostInfo, PlatformRemoteMacOSX, Socket> subsystems;
+  DebuggerSP m_debugger_sp;
+
+  lldb::IOObjectSP m_io_sp;
+  std::unique_ptr<TestJSONTransport> m_transport_up;
+  std::unique_ptr<TestProtocolServerMCP> m_server_up;
+
+  static constexpr llvm::StringLiteral k_ip = "127.0.0.1";
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labath wrote:

can you make this "localhost"? We actually have servers with no IPv4 stack o_O

https://github.com/llvm/llvm-project/pull/143628