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  }