package client
 
 import (
 	"bytes"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"strings"
 	"testing"
 
 	"golang.org/x/net/context"
 )
 
 func TestImageTagError(t *testing.T) {
 	client := &Client{

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

 	}
 
 	err := client.ImageTag(context.Background(), "image_id", "repo:tag")
 	if err == nil || err.Error() != "Error response from daemon: Server error" {
 		t.Fatalf("expected a Server Error, got %v", err)
 	}
 }
 

 // Note: this is not testing all the InvalidReference as it's the responsibility

 // of distribution/reference package.
 func TestImageTagInvalidReference(t *testing.T) {
 	client := &Client{

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

 	}
 
 	err := client.ImageTag(context.Background(), "image_id", "aa/asdf$$^/aa")

 	if err == nil || err.Error() != `Error parsing reference: "aa/asdf$$^/aa" is not a valid repository/tag: invalid reference format` {

 		t.Fatalf("expected ErrReferenceInvalidFormat, got %v", err)
 	}
 }
 

 func TestImageTagInvalidSourceImageName(t *testing.T) {
 	client := &Client{
 		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
 	}
 
 	err := client.ImageTag(context.Background(), "invalid_source_image_name_", "repo:tag")
 	if err == nil || err.Error() != "Error parsing reference: \"invalid_source_image_name_\" is not a valid repository/tag: invalid reference format" {
 		t.Fatalf("expected Parsing Reference Error, got %v", err)
 	}
 }
 

 func TestImageTagHexSource(t *testing.T) {
 	client := &Client{
 		client: newMockClient(errorMock(http.StatusOK, "OK")),
 	}
 
 	err := client.ImageTag(context.Background(), "0d409d33b27e47423b049f7f863faa08655a8c901749c2b25b93ca67d01a470d", "repo:tag")
 	if err != nil {
 		t.Fatalf("got error: %v", err)
 	}
 }
 

 func TestImageTag(t *testing.T) {
 	expectedURL := "/images/image_id/tag"
 	tagCases := []struct {
 		reference           string
 		expectedQueryParams map[string]string
 	}{
 		{
 			reference: "repository:tag1",
 			expectedQueryParams: map[string]string{
 				"repo": "repository",
 				"tag":  "tag1",
 			},
 		}, {
 			reference: "another_repository:latest",
 			expectedQueryParams: map[string]string{
 				"repo": "another_repository",
 				"tag":  "latest",
 			},
 		}, {
 			reference: "another_repository",
 			expectedQueryParams: map[string]string{
 				"repo": "another_repository",
 				"tag":  "latest",
 			},
 		}, {
 			reference: "test/another_repository",
 			expectedQueryParams: map[string]string{
 				"repo": "test/another_repository",
 				"tag":  "latest",
 			},
 		}, {
 			reference: "test/another_repository:tag1",
 			expectedQueryParams: map[string]string{
 				"repo": "test/another_repository",
 				"tag":  "tag1",
 			},
 		}, {
 			reference: "test/test/another_repository:tag1",
 			expectedQueryParams: map[string]string{
 				"repo": "test/test/another_repository",
 				"tag":  "tag1",
 			},
 		}, {
 			reference: "test:5000/test/another_repository:tag1",
 			expectedQueryParams: map[string]string{
 				"repo": "test:5000/test/another_repository",
 				"tag":  "tag1",
 			},
 		}, {
 			reference: "test:5000/test/another_repository",
 			expectedQueryParams: map[string]string{
 				"repo": "test:5000/test/another_repository",
 				"tag":  "latest",
 			},
 		},
 	}
 	for _, tagCase := range tagCases {
 		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)
 				}
 				if req.Method != "POST" {
 					return nil, fmt.Errorf("expected POST method, got %s", req.Method)
 				}
 				query := req.URL.Query()
 				for key, expected := range tagCase.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(""))),
 				}, nil
 			}),
 		}
 		err := client.ImageTag(context.Background(), "image_id", tagCase.reference)
 		if err != nil {
 			t.Fatal(err)
 		}
 	}
 }