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// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package daemon
import (
"context"
"errors"
"fmt"
"io"
"os"
"strings"
"testing"
"github.com/docker/docker/api/types"
"github.com/google/go-containerregistry/internal/compare"
"github.com/google/go-containerregistry/pkg/name"
"github.com/google/go-containerregistry/pkg/v1/tarball"
"github.com/google/go-containerregistry/pkg/v1/validate"
)
var imagePath = "../tarball/testdata/test_image_1.tar"
type MockClient struct {
Client
path string
negotiated bool
wantCtx context.Context
loadErr error
loadBody io.ReadCloser
saveErr error
saveBody io.ReadCloser
}
func (m *MockClient) NegotiateAPIVersion(ctx context.Context) {
m.negotiated = true
}
func (m *MockClient) ImageSave(_ context.Context, _ []string) (io.ReadCloser, error) {
if !m.negotiated {
return nil, errors.New("you forgot to call NegotiateAPIVersion before calling ImageSave")
}
if m.path != "" {
return os.Open(m.path)
}
return m.saveBody, m.saveErr
}
func (m *MockClient) ImageInspectWithRaw(context.Context, string) (types.ImageInspect, []byte, error) {
return types.ImageInspect{
ID: "sha256:6e0b05049ed9c17d02e1a55e80d6599dbfcce7f4f4b022e3c673e685789c470e",
}, nil, nil
}
func TestImage(t *testing.T) {
for _, tc := range []struct {
name string
buffered bool
client *MockClient
wantResponse string
wantErr string
}{{
name: "success",
client: &MockClient{
path: imagePath,
},
}, {
name: "save err",
client: &MockClient{
saveBody: io.NopCloser(strings.NewReader("Loaded")),
saveErr: fmt.Errorf("locked and loaded"),
},
wantErr: "locked and loaded",
}, {
name: "read err",
client: &MockClient{
saveBody: io.NopCloser(&errReader{fmt.Errorf("goodbye, world")}),
},
wantErr: "goodbye, world",
}} {
run := func(t *testing.T) {
opts := []Option{WithClient(tc.client)}
if tc.buffered {
opts = append(opts, WithBufferedOpener())
} else {
opts = append(opts, WithUnbufferedOpener())
}
img, err := tarball.ImageFromPath(imagePath, nil)
if err != nil {
t.Fatalf("error loading test image: %s", err)
}
tag, err := name.NewTag("unused", name.WeakValidation)
if err != nil {
t.Fatalf("error creating test name: %s", err)
}
dmn, err := Image(tag, opts...)
if err != nil {
if tc.wantErr == "" {
t.Errorf("Error loading daemon image: %s", err)
} else if !strings.Contains(err.Error(), tc.wantErr) {
t.Errorf("wanted %s to contain %s", err.Error(), tc.wantErr)
}
return
}
err = compare.Images(img, dmn)
if err != nil {
if tc.wantErr == "" {
t.Errorf("compare.Images: %v", err)
} else if !strings.Contains(err.Error(), tc.wantErr) {
t.Errorf("wanted %s to contain %s", err.Error(), tc.wantErr)
}
}
err = validate.Image(dmn)
if err != nil {
if tc.wantErr == "" {
t.Errorf("validate.Image: %v", err)
} else if !strings.Contains(err.Error(), tc.wantErr) {
t.Errorf("wanted %s to contain %s", err.Error(), tc.wantErr)
}
}
}
tc.buffered = true
t.Run(tc.name+" buffered", run)
tc.buffered = false
t.Run(tc.name+" unbuffered", run)
}
}
func TestImageDefaultClient(t *testing.T) {
wantErr := fmt.Errorf("bad client")
defaultClient = func() (Client, error) {
return nil, wantErr
}
if _, err := Image(name.MustParseReference("unused")); !errors.Is(err, wantErr) {
t.Errorf("Image(): want %v; got %v", wantErr, err)
}
}
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