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

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

 	}
 	_, err := client.ContainerLogs(context.Background(), "container_id", types.ContainerLogsOptions{})
 	if err == nil || err.Error() != "Error response from daemon: Server error" {
 		t.Fatalf("expected a Server Error, got %v", err)
 	}
 	_, err = client.ContainerLogs(context.Background(), "container_id", types.ContainerLogsOptions{
 		Since: "2006-01-02TZ",
 	})
 	if err == nil || !strings.Contains(err.Error(), `parsing time "2006-01-02TZ"`) {
 		t.Fatalf("expected a 'parsing time' error, got %v", err)
 	}
 }
 
 func TestContainerLogs(t *testing.T) {
 	expectedURL := "/containers/container_id/logs"
 	cases := []struct {
 		options             types.ContainerLogsOptions
 		expectedQueryParams map[string]string
 	}{
 		{
 			expectedQueryParams: map[string]string{
 				"tail": "",
 			},
 		},
 		{
 			options: types.ContainerLogsOptions{
 				Tail: "any",
 			},
 			expectedQueryParams: map[string]string{
 				"tail": "any",
 			},
 		},
 		{
 			options: types.ContainerLogsOptions{
 				ShowStdout: true,
 				ShowStderr: true,
 				Timestamps: true,
 				Details:    true,
 				Follow:     true,
 			},
 			expectedQueryParams: map[string]string{
 				"tail":       "",
 				"stdout":     "1",
 				"stderr":     "1",
 				"timestamps": "1",
 				"details":    "1",
 				"follow":     "1",
 			},
 		},
 		{
 			options: types.ContainerLogsOptions{
 				// An complete invalid date, timestamp or go duration will be
 				// passed as is
 				Since: "invalid but valid",
 			},
 			expectedQueryParams: map[string]string{
 				"tail":  "",
 				"since": "invalid but valid",
 			},
 		},
 	}
 	for _, logCase := range cases {
 		client := &Client{

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

 				if !strings.HasPrefix(r.URL.Path, expectedURL) {
 					return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, r.URL)
 				}
 				// Check query parameters
 				query := r.URL.Query()
 				for key, expected := range logCase.expectedQueryParams {
 					actual := query.Get(key)
 					if actual != expected {
 						return nil, fmt.Errorf("%s not set in URL query properly. Expected '%s', got %s", key, expected, actual)
 					}
 				}
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       ioutil.NopCloser(bytes.NewReader([]byte("response"))),
 				}, nil
 			}),
 		}
 		body, err := client.ContainerLogs(context.Background(), "container_id", logCase.options)
 		if err != nil {
 			t.Fatal(err)
 		}
 		defer body.Close()
 		content, err := ioutil.ReadAll(body)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if string(content) != "response" {
 			t.Fatalf("expected response to contain 'response', got %s", string(content))
 		}
 	}
 }
 
 func ExampleClient_ContainerLogs_withTimeout() {
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 
 	client, _ := NewEnvClient()
 	reader, err := client.ContainerLogs(ctx, "container_id", types.ContainerLogsOptions{})
 	if err != nil {
 		log.Fatal(err)
 	}
 
 	_, err = io.Copy(os.Stdout, reader)
 	if err != nil && err != io.EOF {
 		log.Fatal(err)
 	}
 }