github.com/zhouyu0/docker-note@v0.0.0-20190722021225-b8d3825084db/client/image_save_test.go (about) 1 package client // import "github.com/docker/docker/client" 2 3 import ( 4 "bytes" 5 "context" 6 "fmt" 7 "io/ioutil" 8 "net/http" 9 "reflect" 10 "strings" 11 "testing" 12 ) 13 14 func TestImageSaveError(t *testing.T) { 15 client := &Client{ 16 client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")), 17 } 18 _, err := client.ImageSave(context.Background(), []string{"nothing"}) 19 if err == nil || err.Error() != "Error response from daemon: Server error" { 20 t.Fatalf("expected a Server error, got %v", err) 21 } 22 } 23 24 func TestImageSave(t *testing.T) { 25 expectedURL := "/images/get" 26 client := &Client{ 27 client: newMockClient(func(r *http.Request) (*http.Response, error) { 28 if !strings.HasPrefix(r.URL.Path, expectedURL) { 29 return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, r.URL) 30 } 31 query := r.URL.Query() 32 names := query["names"] 33 expectedNames := []string{"image_id1", "image_id2"} 34 if !reflect.DeepEqual(names, expectedNames) { 35 return nil, fmt.Errorf("names not set in URL query properly. Expected %v, got %v", names, expectedNames) 36 } 37 38 return &http.Response{ 39 StatusCode: http.StatusOK, 40 Body: ioutil.NopCloser(bytes.NewReader([]byte("response"))), 41 }, nil 42 }), 43 } 44 saveResponse, err := client.ImageSave(context.Background(), []string{"image_id1", "image_id2"}) 45 if err != nil { 46 t.Fatal(err) 47 } 48 response, err := ioutil.ReadAll(saveResponse) 49 if err != nil { 50 t.Fatal(err) 51 } 52 saveResponse.Close() 53 if string(response) != "response" { 54 t.Fatalf("expected response to contain 'response', got %s", string(response)) 55 } 56 }