client/image_history_test.go

   1 package client
   2
   3 import (
   4         "bytes"
   5         "encoding/json"
   6         "fmt"
   7         "io/ioutil"
   8         "net/http"
   9         "strings"
  10         "testing"
  11
  12         "github.com/docker/docker/api/types/image"
  13         "golang.org/x/net/context"
  14 )
  15
  16 func TestImageHistoryError(t *testing.T) {
  17         client := &Client{
  18                 client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
  19         }
  20         _, err := client.ImageHistory(context.Background(), "nothing")
  21         if err == nil || err.Error() != "Error response from daemon: Server error" {
  22                 t.Fatalf("expected a Server error, got %v", err)
  23         }
  24 }
  25
  26 func TestImageHistory(t *testing.T) {
  27         expectedURL := "/images/image_id/history"
  28         client := &Client{
  29                 client: newMockClient(func(r *http.Request) (*http.Response, error) {
  30                         if !strings.HasPrefix(r.URL.Path, expectedURL) {
  31                                 return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, r.URL)
  32                         }
  33                         b, err := json.Marshal([]image.HistoryResponseItem{
  34                                 {
  35                                         ID:   "image_id1",
  36                                         Tags: []string{"tag1", "tag2"},
  37                                 },
  38                                 {
  39                                         ID:   "image_id2",
  40                                         Tags: []string{"tag1", "tag2"},
  41                                 },
  42                         })
  43                         if err != nil {
  44                                 return nil, err
  45                         }
  46
  47                         return &http.Response{
  48                                 StatusCode: http.StatusOK,
  49                                 Body:       ioutil.NopCloser(bytes.NewReader(b)),
  50                         }, nil
  51                 }),
  52         }
  53         imageHistories, err := client.ImageHistory(context.Background(), "image_id")
  54         if err != nil {
  55                 t.Fatal(err)
  56         }
  57         if len(imageHistories) != 2 {
  58                 t.Fatalf("expected 2 containers, got %v", imageHistories)
  59         }
  60 }