go-sdk/mcp/sse_test.go
Rob Findley fe938f6eb7 internal/mcp: implement ping, and test request interleaving
Also validate that requests observe the lifecycle rules defined in the
spec.

Change-Id: I302282f81e053e76926e0bb295f7dbf8d526f02d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/667575
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Commit-Queue: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Findley <rfindley@google.com>
TryBot-Bypass: Robert Findley <rfindley@google.com>
2025-04-23 19:15:29 -07:00

68 lines
1.6 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
import (
"context"
"fmt"
"net/http/httptest"
"testing"
"github.com/google/go-cmp/cmp"
)
func TestSSEServer(t *testing.T) {
for _, closeServerFirst := range []bool{false, true} {
t.Run(fmt.Sprintf("closeServerFirst=%t", closeServerFirst), func(t *testing.T) {
ctx := context.Background()
server := NewServer("testServer", "v1.0.0", nil)
server.AddTools(MakeTool("greet", "say hi", sayHi))
sseHandler := NewSSEHandler(func() *Server { return server })
clients := make(chan *ClientConnection, 1)
sseHandler.onClient = func(cc *ClientConnection) {
select {
case clients <- cc:
default:
}
}
httpServer := httptest.NewServer(sseHandler)
clientTransport, err := NewSSEClientTransport(httpServer.URL)
if err != nil {
t.Fatal(err)
}
client := NewClient("testClient", "v1.0.0", nil)
sc, err := client.Connect(ctx, clientTransport, nil)
if err != nil {
t.Fatal(err)
}
if err := sc.Ping(ctx); err != nil {
t.Fatal(err)
}
cc := <-clients
gotHi, err := sc.CallTool(ctx, "greet", hiParams{"user"})
if err != nil {
t.Fatal(err)
}
wantHi := []Content{TextContent{Text: "hi user"}}
if diff := cmp.Diff(wantHi, gotHi); diff != "" {
t.Errorf("tools/call 'greet' mismatch (-want +got):\n%s", diff)
}
// Test that closing either end of the connection terminates the other
// end.
if closeServerFirst {
sc.Close()
cc.Wait()
} else {
cc.Close()
sc.Wait()
}
})
}
}