// Copyright 2016 CoreOS, 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,
// 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 clientv3

import (
	"testing"
	"time"

	"github.com/coreos/etcd/Godeps/_workspace/src/google.golang.org/grpc"
)

func TestDialTimeout(t *testing.T) {
	donec := make(chan error)
	go func() {
		// without timeout, grpc keeps redialing if connection refused
		cfg := Config{
			Endpoints:   []string{"localhost:12345"},
			DialTimeout: 2 * time.Second}
		c, err := New(cfg)
		if c != nil || err == nil {
			t.Errorf("new client should fail")
		}
		donec <- err
	}()

	time.Sleep(10 * time.Millisecond)

	select {
	case err := <-donec:
		t.Errorf("dial didn't wait (%v)", err)
	default:
	}

	select {
	case <-time.After(5 * time.Second):
		t.Errorf("failed to timeout dial on time")
	case err := <-donec:
		if err != grpc.ErrClientConnTimeout {
			t.Errorf("unexpected error %v, want %v", err, grpc.ErrClientConnTimeout)
		}
	}
}