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moby--moby/client/image_history_test.go

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package client
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"strings"
"testing"
"github.com/docker/docker/api/types/image"
"golang.org/x/net/context"
)
func TestImageHistoryError(t *testing.T) {
client := &Client{
client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
}
_, err := client.ImageHistory(context.Background(), "nothing")
if err == nil || err.Error() != "Error response from daemon: Server error" {
t.Fatalf("expected a Server error, got %v", err)
}
}
func TestImageHistory(t *testing.T) {
expectedURL := "/images/image_id/history"
client := &Client{
client: newMockClient(func(r *http.Request) (*http.Response, error) {
if !strings.HasPrefix(r.URL.Path, expectedURL) {
return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, r.URL)
}
b, err := json.Marshal([]image.HistoryResponseItem{
{
ID: "image_id1",
Tags: []string{"tag1", "tag2"},
},
{
ID: "image_id2",
Tags: []string{"tag1", "tag2"},
},
})
if err != nil {
return nil, err
}
return &http.Response{
StatusCode: http.StatusOK,
Body: ioutil.NopCloser(bytes.NewReader(b)),
}, nil
}),
}
imageHistories, err := client.ImageHistory(context.Background(), "image_id")
if err != nil {
t.Fatal(err)
}
if len(imageHistories) != 2 {
t.Fatalf("expected 2 containers, got %v", imageHistories)
}
}