package mux_test

import (
	"context"
	"testing"
	"time"

	"github.com/golang/mock/gomock"
	"v2ray.com/core/common"
	"v2ray.com/core/common/errors"
	"v2ray.com/core/common/mux"
	"v2ray.com/core/common/vio"
	"v2ray.com/core/testing/mocks"
	"v2ray.com/core/transport/pipe"
)

func TestIncrementalPickerFailure(t *testing.T) {
	mockCtl := gomock.NewController(t)
	defer mockCtl.Finish()

	mockWorkerFactory := mocks.NewMuxClientWorkerFactory(mockCtl)
	mockWorkerFactory.EXPECT().Create().Return(nil, errors.New("test"))

	picker := mux.IncrementalWorkerPicker{
		Factory: mockWorkerFactory,
	}

	_, err := picker.PickAvailable()
	if err == nil {
		t.Error("expected error, but nil")
	}
}

func TestClientWorkerEOF(t *testing.T) {
	reader, writer := pipe.New(pipe.WithoutSizeLimit())
	common.Must(writer.Close())

	worker, err := mux.NewClientWorker(vio.Link{Reader: reader, Writer: writer}, mux.ClientStrategy{})
	common.Must(err)

	time.Sleep(time.Millisecond * 500)

	f := worker.Dispatch(context.Background(), nil)
	if f {
		t.Error("expected failed dispatching, but actually not")
	}
}