forked from yarpc/yarpc-go
/
stream.go
115 lines (101 loc) · 3.42 KB
/
stream.go
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// Copyright (c) 2019 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package types
import (
"context"
"io"
"io/ioutil"
"testing"
"github.com/stretchr/testify/require"
"go.uber.org/yarpc/api/transport"
"go.uber.org/yarpc/x/yarpctest/api"
)
// SendStreamMsg is an action to send a message to a stream. It can be
// applied to either a server or client stream.
type SendStreamMsg struct {
api.SafeTestingTBOnStart
api.NoopStop
BodyFunc func() io.ReadCloser
WantErrMsgs []string
}
// ApplyClientStream implements ClientStreamAction
func (s *SendStreamMsg) ApplyClientStream(t testing.TB, c *transport.ClientStream) {
s.applyStream(t, c)
}
// ApplyServerStream implements ServerStreamAction
func (s *SendStreamMsg) ApplyServerStream(c *transport.ServerStream) error {
s.applyStream(s.GetTestingTB(), c)
return nil
}
func (s *SendStreamMsg) applyStream(t testing.TB, c transport.Stream) {
err := c.SendMessage(
context.Background(),
&transport.StreamMessage{
Body: s.BodyFunc(),
},
)
if len(s.WantErrMsgs) > 0 {
require.Error(t, err)
for _, wantErrMsg := range s.WantErrMsgs {
require.Contains(t, err.Error(), wantErrMsg)
}
return
}
require.NoError(t, err)
}
// RecvStreamMsg is an action to receive a message from a stream. It can
// be applied to either a server or client stream.
type RecvStreamMsg struct {
api.SafeTestingTBOnStart
api.NoopStop
WantBody []byte
WantDecodeErrMsgs []string
WantErrMsgs []string
}
// ApplyClientStream implements ClientStreamAction
func (s *RecvStreamMsg) ApplyClientStream(t testing.TB, c *transport.ClientStream) {
s.applyStream(t, c)
}
// ApplyServerStream implements ServerStreamAction
func (s *RecvStreamMsg) ApplyServerStream(c *transport.ServerStream) error {
s.applyStream(s.GetTestingTB(), c)
return nil
}
func (s *RecvStreamMsg) applyStream(t testing.TB, c transport.Stream) {
msg, err := c.ReceiveMessage(context.Background())
if len(s.WantErrMsgs) > 0 {
require.Error(t, err)
for _, wantErrMsg := range s.WantErrMsgs {
require.Contains(t, err.Error(), wantErrMsg)
}
return
}
require.NoError(t, err)
actualMsg, err := ioutil.ReadAll(msg.Body)
if len(s.WantDecodeErrMsgs) > 0 {
require.Error(t, err)
for _, wantErrMsg := range s.WantDecodeErrMsgs {
require.Contains(t, err.Error(), wantErrMsg)
}
return
}
require.NoError(t, err)
require.Equal(t, s.WantBody, actualMsg, "mismatch on stream messages")
}