3da831b0c9* mcp: move to 2025-06-18 schema Add types and fields for the latest MCP schema. The main challenge here was dealing with the presence of _meta fields on many types, like Tool, Prompt and Resource. - Distinguish between the _meta field of a request's params, which includes a progress token, from the _meta field on other types, which is simply a map. - Redefine GetMeta to return a pointer to the map. We wanted to avoid that, but I don't see a clean way to do so. An alternative would be to have GetMeta return a map, and SetMeta to set it. - Provide GetProgressToken for requests only (not notifications or other types). - Still to do: deal with the meta and annotation fields of ContentBlock, which are currently duplicated for Resource and ResourceContents. * Meta and progress token redesign
81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
|
|
// Use of this source code is governed by an MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package mcp_test
|
|
|
|
import (
|
|
"context"
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"runtime"
|
|
"testing"
|
|
|
|
"github.com/google/go-cmp/cmp"
|
|
"github.com/modelcontextprotocol/go-sdk/mcp"
|
|
)
|
|
|
|
const runAsServer = "_MCP_RUN_AS_SERVER"
|
|
|
|
func TestMain(m *testing.M) {
|
|
if os.Getenv(runAsServer) != "" {
|
|
os.Unsetenv(runAsServer)
|
|
runServer()
|
|
return
|
|
}
|
|
os.Exit(m.Run())
|
|
}
|
|
|
|
func runServer() {
|
|
ctx := context.Background()
|
|
|
|
server := mcp.NewServer("greeter", "v0.0.1", nil)
|
|
server.AddTools(mcp.NewServerTool("greet", "say hi", SayHi))
|
|
|
|
if err := server.Run(ctx, mcp.NewStdioTransport()); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestCmdTransport(t *testing.T) {
|
|
// Conservatively, limit to major OS where we know that os.Exec is
|
|
// supported.
|
|
switch runtime.GOOS {
|
|
case "darwin", "linux", "windows":
|
|
default:
|
|
t.Skip("unsupported OS")
|
|
}
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
exe, err := os.Executable()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
cmd := exec.Command(exe)
|
|
cmd.Env = append(os.Environ(), runAsServer+"=true")
|
|
|
|
client := mcp.NewClient("client", "v0.0.1", nil)
|
|
session, err := client.Connect(ctx, mcp.NewCommandTransport(cmd))
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
got, err := session.CallTool(ctx, &mcp.CallToolParams{
|
|
Name: "greet",
|
|
Arguments: map[string]any{"name": "user"},
|
|
})
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
want := &mcp.CallToolResult{
|
|
Content: []*mcp.ContentBlock{{Type: "text", Text: "Hi user"}},
|
|
}
|
|
if diff := cmp.Diff(want, got); diff != "" {
|
|
t.Errorf("greet returned unexpected content (-want +got):\n%s", diff)
|
|
}
|
|
if err := session.Close(); err != nil {
|
|
t.Fatalf("closing server: %v", err)
|
|
}
|
|
}
|