| // Copyright 2017 The LUCI Authors. |
| // |
| // 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 testutil |
| |
| import ( |
| "bytes" |
| "context" |
| "io" |
| |
| "go.chromium.org/luci/cipd/appengine/impl/gs" |
| ) |
| |
| // NoopGoogleStorage implements gs.GoogleStorage interface by returning errors. |
| // |
| // Can be embedded into mock implementations that override some subset of |
| // methods. |
| type NoopGoogleStorage struct { |
| Err error // an error to return or nil to panic |
| } |
| |
| var _ gs.GoogleStorage = NoopGoogleStorage{} |
| |
| // Size is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) Size(ctx context.Context, path string) (size uint64, exists bool, err error) { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return 0, false, n.Err |
| } |
| |
| // Exists is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) Exists(ctx context.Context, path string) (exists bool, err error) { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return false, n.Err |
| } |
| |
| // Copy is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) Copy(ctx context.Context, dst string, dstGen int64, src string, srcGen int64) error { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return n.Err |
| } |
| |
| // Delete is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) Delete(ctx context.Context, path string) error { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return n.Err |
| } |
| |
| // Publish is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) Publish(ctx context.Context, dst, src string, srcGen int64) error { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return n.Err |
| } |
| |
| // StartUpload is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) StartUpload(ctx context.Context, path string) (uploadURL string, err error) { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return "", n.Err |
| } |
| |
| // CancelUpload is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) CancelUpload(ctx context.Context, uploadURL string) error { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return n.Err |
| } |
| |
| // Reader is part of gs.GoogleStorage interface. |
| func (n NoopGoogleStorage) Reader(ctx context.Context, path string, gen int64) (gs.Reader, error) { |
| if n.Err == nil { |
| panic("must not be called") |
| } |
| return nil, n.Err |
| } |
| |
| // MockGSReader implements gs.Reader on top of a regular io.ReaderAt. |
| type MockGSReader struct { |
| io.ReaderAt |
| |
| Len int64 |
| Gen int64 |
| } |
| |
| // Size is part of gs.Reader interface. |
| func (m *MockGSReader) Size() int64 { return m.Len } |
| |
| // Generation is part of gs.Reader interface. |
| func (m *MockGSReader) Generation() int64 { return m.Gen } |
| |
| // NewMockGSReader constructs MockGSReader from a byte slice. |
| func NewMockGSReader(data []byte) *MockGSReader { |
| return &MockGSReader{ |
| ReaderAt: bytes.NewReader(data), |
| Len: int64(len(data)), |
| Gen: 1, |
| } |
| } |