96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package client
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"testing"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/pkg/transfer/archive"
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)
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func TestTransferEcho(t *testing.T) {
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client, err := newClient(t, address)
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if err != nil {
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t.Fatal(err)
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}
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defer client.Close()
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ctx, cancel := testContext(t)
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defer cancel()
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t.Run("ImportExportEchoBig", newImportExportEcho(ctx, client, bytes.Repeat([]byte("somecontent"), 17*1024)))
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t.Run("ImportExportEchoSmall", newImportExportEcho(ctx, client, []byte("somecontent")))
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t.Run("ImportExportEchoEmpty", newImportExportEcho(ctx, client, []byte("")))
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}
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func newImportExportEcho(ctx context.Context, client *containerd.Client, expected []byte) func(*testing.T) {
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return func(t *testing.T) {
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testBuf := newWaitBuffer()
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err := client.Transfer(ctx, archive.NewImageImportStream(bytes.NewReader(expected), "application/octet-stream"), archive.NewImageExportStream(testBuf, "application/octet-stream"))
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(expected, testBuf.Bytes()) {
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t.Fatalf("Bytes did not match\n\tActual: %v\n\tExpected: %v", displayBytes(testBuf.Bytes()), displayBytes(expected))
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}
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}
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}
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type WriteBytesCloser interface {
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io.WriteCloser
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Bytes() []byte
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}
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func newWaitBuffer() WriteBytesCloser {
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return &waitBuffer{
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Buffer: bytes.NewBuffer(nil),
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closed: make(chan struct{}),
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}
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}
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type waitBuffer struct {
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*bytes.Buffer
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closed chan struct{}
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}
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func (wb *waitBuffer) Close() error {
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select {
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case <-wb.closed:
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default:
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close(wb.closed)
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}
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return nil
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}
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func (wb *waitBuffer) Bytes() []byte {
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<-wb.closed
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return wb.Buffer.Bytes()
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}
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func displayBytes(b []byte) string {
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if len(b) > 40 {
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skipped := len(b) - 20
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return fmt.Sprintf("%s...(skipped %d)...%s", b[:10], skipped, b[len(b)-10:])
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}
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return string(b)
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}
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