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mock_grpc_client.go
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mock_grpc_client.go
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// Copyright 2021 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package p2p
import (
"context"
"sync"
"sync/atomic"
"github.com/pingcap/tiflow/proto/p2p"
"github.com/stretchr/testify/mock"
"google.golang.org/grpc"
)
type mockSendMessageClient struct {
mu sync.Mutex
mock.Mock
// embeds an empty interface
p2p.CDCPeerToPeer_SendMessageClient
ctx context.Context
msgCount int32
replyCh chan *p2p.SendMessageResponse
}
func newMockSendMessageClient(ctx context.Context) *mockSendMessageClient {
return &mockSendMessageClient{
ctx: ctx,
replyCh: make(chan *p2p.SendMessageResponse), // unbuffered channel
}
}
func (s *mockSendMessageClient) Send(packet *p2p.MessagePacket) error {
s.mu.Lock()
defer s.mu.Unlock()
args := s.Called(packet)
atomic.AddInt32(&s.msgCount, 1)
return args.Error(0)
}
func (s *mockSendMessageClient) Recv() (*p2p.SendMessageResponse, error) {
var args mock.Arguments
func() {
// We use a deferred Unlock in case `s.Called()` panics.
s.mu.Lock()
defer s.mu.Unlock()
args = s.MethodCalled("Recv")
}()
if err := args.Error(1); err != nil {
return nil, err
}
if args.Get(0) != nil {
return args.Get(0).(*p2p.SendMessageResponse), nil
}
select {
case <-s.ctx.Done():
return nil, s.ctx.Err()
case resp := <-s.replyCh:
return resp, nil
}
}
func (s *mockSendMessageClient) Context() context.Context {
return s.ctx
}
func (s *mockSendMessageClient) ResetMock() {
s.mu.Lock()
defer s.mu.Unlock()
s.ExpectedCalls = nil
s.Calls = nil
}
type mockCDCPeerToPeerClient struct {
mock.Mock
}
func (c *mockCDCPeerToPeerClient) SendMessage(
ctx context.Context, opts ...grpc.CallOption,
) (p2p.CDCPeerToPeer_SendMessageClient, error) {
args := c.Called(ctx, opts)
return args.Get(0).(p2p.CDCPeerToPeer_SendMessageClient), args.Error(1)
}