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mcp/examples: move server example into example folder #357

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20 changes: 2 additions & 18 deletions mcp/server_example_test.go → examples/server/basic/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.

package mcp_test
package main

import (
"context"
Expand All @@ -24,7 +24,7 @@ func SayHi(ctx context.Context, req *mcp.CallToolRequest, args SayHiParams) (*mc
}, nil, nil
}

func ExampleServer() {
func main() {
ctx := context.Background()
clientTransport, serverTransport := mcp.NewInMemoryTransports()

Expand Down Expand Up @@ -56,19 +56,3 @@ func ExampleServer() {

// Output: Hi user
}

// createSessions creates and connects an in-memory client and server session for testing purposes.
func createSessions(ctx context.Context) (*mcp.ClientSession, *mcp.ServerSession, *mcp.Server) {
server := mcp.NewServer(testImpl, nil)
client := mcp.NewClient(testImpl, nil)
serverTransport, clientTransport := mcp.NewInMemoryTransports()
serverSession, err := server.Connect(ctx, serverTransport, nil)
if err != nil {
log.Fatal(err)
}
clientSession, err := client.Connect(ctx, clientTransport, nil)
if err != nil {
log.Fatal(err)
}
return clientSession, serverSession, server
}
15 changes: 13 additions & 2 deletions mcp/client_list_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ package mcp_test
import (
"context"
"iter"
"log"
"testing"

"github.com/google/go-cmp/cmp"
Expand All @@ -17,9 +18,19 @@ import (

func TestList(t *testing.T) {
ctx := context.Background()
clientSession, serverSession, server := createSessions(ctx)
defer clientSession.Close()
server := mcp.NewServer(testImpl, nil)
client := mcp.NewClient(testImpl, nil)
serverTransport, clientTransport := mcp.NewInMemoryTransports()
serverSession, err := server.Connect(ctx, serverTransport, nil)
if err != nil {
log.Fatal(err)
}
defer serverSession.Close()
clientSession, err := client.Connect(ctx, clientTransport, nil)
if err != nil {
log.Fatal(err)
}
defer clientSession.Close()

t.Run("tools", func(t *testing.T) {
var wantTools []*mcp.Tool
Expand Down
12 changes: 12 additions & 0 deletions mcp/cmd_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,18 @@ import (

const runAsServer = "_MCP_RUN_AS_SERVER"

type SayHiParams struct {
Name string `json:"name"`
}

func SayHi(ctx context.Context, req *mcp.CallToolRequest, args SayHiParams) (*mcp.CallToolResult, any, error) {
return &mcp.CallToolResult{
Content: []mcp.Content{
&mcp.TextContent{Text: "Hi " + args.Name},
},
}, nil, nil
}

func TestMain(m *testing.M) {
// If the runAsServer variable is set, execute the relevant serverFunc
// instead of running tests (aka the fork and exec trick).
Expand Down