a519c182e8Export the Event type in preparation for providing user-definable storage for resumable streams. Also, move event code to a separate file. This PR is just renaming and code motion.
97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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package mcp
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import (
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"context"
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"fmt"
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"net/http"
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"net/http/httptest"
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"sync/atomic"
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"testing"
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"github.com/google/go-cmp/cmp"
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)
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func TestSSEServer(t *testing.T) {
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for _, closeServerFirst := range []bool{false, true} {
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t.Run(fmt.Sprintf("closeServerFirst=%t", closeServerFirst), func(t *testing.T) {
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ctx := context.Background()
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server := NewServer(testImpl, nil)
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AddTool(server, &Tool{Name: "greet"}, sayHi)
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sseHandler := NewSSEHandler(func(*http.Request) *Server { return server })
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conns := make(chan *ServerSession, 1)
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sseHandler.onConnection = func(cc *ServerSession) {
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select {
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case conns <- cc:
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default:
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}
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}
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httpServer := httptest.NewServer(sseHandler)
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defer httpServer.Close()
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var customClientUsed int64
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customClient := &http.Client{
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Transport: roundTripperFunc(func(req *http.Request) (*http.Response, error) {
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atomic.AddInt64(&customClientUsed, 1)
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return http.DefaultTransport.RoundTrip(req)
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}),
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}
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clientTransport := NewSSEClientTransport(httpServer.URL, &SSEClientTransportOptions{
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HTTPClient: customClient,
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})
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c := NewClient(testImpl, nil)
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cs, err := c.Connect(ctx, clientTransport)
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if err != nil {
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t.Fatal(err)
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}
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if err := cs.Ping(ctx, nil); err != nil {
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t.Fatal(err)
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}
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ss := <-conns
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gotHi, err := cs.CallTool(ctx, &CallToolParams{
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Name: "greet",
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Arguments: map[string]any{"Name": "user"},
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})
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if err != nil {
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t.Fatal(err)
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}
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wantHi := &CallToolResult{
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Content: []Content{
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&TextContent{Text: "hi user"},
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},
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}
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if diff := cmp.Diff(wantHi, gotHi); diff != "" {
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t.Errorf("tools/call 'greet' mismatch (-want +got):\n%s", diff)
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}
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// Verify that customClient was used
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if atomic.LoadInt64(&customClientUsed) == 0 {
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t.Error("Expected custom HTTP client to be used, but it wasn't")
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}
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// Test that closing either end of the connection terminates the other
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// end.
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if closeServerFirst {
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cs.Close()
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ss.Wait()
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} else {
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ss.Close()
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cs.Wait()
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}
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})
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}
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}
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// roundTripperFunc is a helper to create a custom RoundTripper
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type roundTripperFunc func(*http.Request) (*http.Response, error)
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func (f roundTripperFunc) RoundTrip(req *http.Request) (*http.Response, error) {
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return f(req)
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}
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