github.com/ssdev-go/moby@v17.12.1-ce-rc2+incompatible/client/image_history_test.go (about)

     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  }