client_get_fallback_test.go

// Copyright 2021-2024 The Connect Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package connect

import (
	"context"
	"net/http"
	"strings"
	"testing"

	"connectrpc.com/connect/internal/assert"
	pingv1 "connectrpc.com/connect/internal/gen/connect/ping/v1"
	"connectrpc.com/connect/internal/memhttp/memhttptest"
)

func TestClientUnaryGetFallback(t *testing.T) {
	t.Parallel()
	mux := http.NewServeMux()
	mux.Handle("/connect.ping.v1.PingService/Ping", NewUnaryHandler(
		"/connect.ping.v1.PingService/Ping",
		func(ctx context.Context, r *Request[pingv1.PingRequest]) (*Response[pingv1.PingResponse], error) {
			return NewResponse(&pingv1.PingResponse{
				Number: r.Msg.GetNumber(),
				Text:   r.Msg.GetText(),
			}), nil
		},
		WithIdempotency(IdempotencyNoSideEffects),
	))
	server := memhttptest.NewServer(t, mux)

	client := NewClient[pingv1.PingRequest, pingv1.PingResponse](
		server.Client(),
		server.URL()+"/connect.ping.v1.PingService/Ping",
		WithHTTPGet(),
		WithHTTPGetMaxURLSize(1, true),
		WithSendGzip(),
	)
	ctx := context.Background()

	_, err := client.CallUnary(ctx, NewRequest[pingv1.PingRequest](nil))
	assert.Nil(t, err)

	text := strings.Repeat(".", 256)
	r, err := client.CallUnary(ctx, NewRequest(&pingv1.PingRequest{Text: text}))
	assert.Nil(t, err)
	assert.Equal(t, r.Msg.GetText(), text)
}