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// Copyright 2021-2023 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 (
"fmt"
"testing"
"connectrpc.com/connect/internal/assert"
pingv1 "connectrpc.com/connect/internal/gen/connect/ping/v1"
)
func TestClientStreamIterator(t *testing.T) {
t.Parallel()
// The server's view of a client streaming RPC is an iterator. For safety,
// and to match grpc-go's behavior, we should allocate a new message for each
// iteration.
stream := &ClientStream[pingv1.PingRequest]{
conn: &nopStreamingHandlerConn{},
}
assert.True(t, stream.Receive())
first := fmt.Sprintf("%p", stream.Msg())
assert.True(t, stream.Receive())
second := fmt.Sprintf("%p", stream.Msg())
assert.NotEqual(t, first, second, assert.Sprintf("should allocate a new message for each iteration"))
}
type nopStreamingHandlerConn struct {
StreamingHandlerConn
}
func (nopStreamingHandlerConn) Receive(msg any) error {
return nil
}
func (nopStreamingHandlerConn) Spec() Spec {
return Spec{}
}
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