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package proxy
import (
"context"
"errors"
"os"
"os/signal"
"syscall"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
abciclient "github.com/tendermint/tendermint/abci/client"
abcimocks "github.com/tendermint/tendermint/abci/client/mocks"
"github.com/tendermint/tendermint/libs/log"
)
type noopStoppableClientImpl struct {
abciclient.Client
count int
}
func (c *noopStoppableClientImpl) Stop() { c.count++ }
func TestAppConns_Start_Stop(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
clientMock := &abcimocks.Client{}
clientMock.On("Start", mock.Anything).Return(nil)
clientMock.On("Error").Return(nil)
clientMock.On("IsRunning").Return(true)
clientMock.On("Wait").Return(nil).Times(1)
cl := &noopStoppableClientImpl{Client: clientMock}
creatorCallCount := 0
creator := func(logger log.Logger) (abciclient.Client, error) {
creatorCallCount++
return cl, nil
}
appConns := NewAppConns(creator, log.TestingLogger(), NopMetrics())
err := appConns.Start(ctx)
require.NoError(t, err)
time.Sleep(200 * time.Millisecond)
cancel()
appConns.Wait()
clientMock.AssertExpectations(t)
assert.Equal(t, 1, cl.count)
assert.Equal(t, 1, creatorCallCount)
}
// Upon failure, we call tmos.Kill
func TestAppConns_Failure(t *testing.T) {
ok := make(chan struct{})
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGTERM)
go func() {
for range c {
close(ok)
return
}
}()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
clientMock := &abcimocks.Client{}
clientMock.On("SetLogger", mock.Anything).Return()
clientMock.On("Start", mock.Anything).Return(nil)
clientMock.On("IsRunning").Return(true)
clientMock.On("Wait").Return(nil)
clientMock.On("Error").Return(errors.New("EOF"))
cl := &noopStoppableClientImpl{Client: clientMock}
creator := func(log.Logger) (abciclient.Client, error) {
return cl, nil
}
appConns := NewAppConns(creator, log.TestingLogger(), NopMetrics())
err := appConns.Start(ctx)
require.NoError(t, err)
t.Cleanup(func() { cancel(); appConns.Wait() })
select {
case <-ok:
t.Log("SIGTERM successfully received")
case <-time.After(5 * time.Second):
t.Fatal("expected process to receive SIGTERM signal")
}
}