package client
 
 import (
 	"bytes"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"strings"
 	"testing"
 
 	"golang.org/x/net/context"
 
 	"github.com/docker/docker/api/types"
 )
 
 func TestContainerStartError(t *testing.T) {
 	client := &Client{

 		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),

 	}
 	err := client.ContainerStart(context.Background(), "nothing", types.ContainerStartOptions{})
 	if err == nil || err.Error() != "Error response from daemon: Server error" {
 		t.Fatalf("expected a Server Error, got %v", err)
 	}
 }
 
 func TestContainerStart(t *testing.T) {
 	expectedURL := "/containers/container_id/start"
 	client := &Client{

 		client: newMockClient(func(req *http.Request) (*http.Response, error) {

 			if !strings.HasPrefix(req.URL.Path, expectedURL) {
 				return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
 			}
 			// we're not expecting any payload, but if one is supplied, check it is valid.
 			if req.Header.Get("Content-Type") == "application/json" {
 				var startConfig interface{}
 				if err := json.NewDecoder(req.Body).Decode(&startConfig); err != nil {
 					return nil, fmt.Errorf("Unable to parse json: %s", err)
 				}
 			}
 
 			checkpoint := req.URL.Query().Get("checkpoint")
 			if checkpoint != "checkpoint_id" {
 				return nil, fmt.Errorf("checkpoint not set in URL query properly. Expected 'checkpoint_id', got %s", checkpoint)
 			}
 
 			return &http.Response{
 				StatusCode: http.StatusOK,
 				Body:       ioutil.NopCloser(bytes.NewReader([]byte(""))),
 			}, nil
 		}),
 	}
 
 	err := client.ContainerStart(context.Background(), "container_id", types.ContainerStartOptions{CheckpointID: "checkpoint_id"})
 	if err != nil {
 		t.Fatal(err)
 	}
 }