Golang context.Background函数代码示例

func TestManifestFetchWithEtag(t *testing.T) {
	repo := "test.example.com/repo/by/tag"
	m1, d1 := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap
	addTestManifestWithEtag(repo, "latest", m1.Raw, &m, d1.String())

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ctx := context.Background()
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	m2, err := ms.GetByTag("latest", AddEtagToTag("latest", d1.String()))
	if err != nil {
		t.Fatal(err)
	}
	if m2 != nil {
		t.Fatal("Expected empty manifest for matching etag")
	}
}

func TestManifestFetch(t *testing.T) {
	ctx := context.Background()
	repo := "test.example.com/repo"
	m1, dgst := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap
	addTestManifest(repo, dgst.String(), m1.Raw, &m)

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	ok, err := ms.Exists(dgst)
	if err != nil {
		t.Fatal(err)
	}
	if !ok {
		t.Fatal("Manifest does not exist")
	}

	manifest, err := ms.Get(dgst)
	if err != nil {
		t.Fatal(err)
	}
	if err := checkEqualManifest(manifest, m1); err != nil {
		t.Fatal(err)
	}
}

func TestCatalog(t *testing.T) {
	var m testutil.RequestResponseMap
	addTestCatalog(
		"/v2/_catalog?n=5",
		[]byte("{\"repositories\":[\"foo\", \"bar\", \"baz\"]}"), "", &m)

	e, c := testServer(m)
	defer c()

	entries := make([]string, 5)

	r, err := NewRegistry(context.Background(), e, nil)
	if err != nil {
		t.Fatal(err)
	}

	ctx := context.Background()
	numFilled, err := r.Repositories(ctx, entries, "")
	if err != io.EOF {
		t.Fatal(err)
	}

	if numFilled != 3 {
		t.Fatalf("Got wrong number of repos")
	}
}

func TestManifestTags(t *testing.T) {
	repo := "test.example.com/repo/tags/list"
	tagsList := []byte(strings.TrimSpace(`
{
	"name": "test.example.com/repo/tags/list",
	"tags": [
		"tag1",
		"tag2",
		"funtag"
	]
}
	`))
	var m testutil.RequestResponseMap
	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "GET",
			Route:  "/v2/" + repo + "/tags/list",
		},
		Response: testutil.Response{
			StatusCode: http.StatusOK,
			Body:       tagsList,
			Headers: http.Header(map[string][]string{
				"Content-Length": {fmt.Sprint(len(tagsList))},
				"Last-Modified":  {time.Now().Add(-1 * time.Second).Format(time.ANSIC)},
			}),
		},
	})

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ctx := context.Background()
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	tags, err := ms.Tags()
	if err != nil {
		t.Fatal(err)
	}

	if len(tags) != 3 {
		t.Fatalf("Wrong number of tags returned: %d, expected 3", len(tags))
	}
	// TODO(dmcgowan): Check array

	// TODO(dmcgowan): Check for error cases
}

// RegisterSuite registers an in-process storage driver test suite with
// the go test runner.
func RegisterSuite(driverConstructor DriverConstructor, skipCheck SkipCheck) {
	check.Suite(&DriverSuite{
		Constructor: driverConstructor,
		SkipCheck:   skipCheck,
		ctx:         context.Background(),
	})
}

func TestBufferedFileWriter(t *testing.T) {
	ctx := context.Background()
	writer, err := newFileWriter(ctx, inmemory.New(), "/random")

	if err != nil {
		t.Fatalf("Failed to initialize bufferedFileWriter: %v", err.Error())
	}

	// write one byte and ensure the offset hasn't been incremented.
	// offset will only get incremented when the buffer gets flushed
	short := []byte{byte(1)}

	writer.Write(short)

	if writer.offset > 0 {
		t.Fatalf("WriteStream called prematurely")
	}

	// write enough data to cause the buffer to flush and confirm
	// the offset has been incremented
	long := make([]byte, fileWriterBufferSize)
	_, err = rand.Read(long)
	if err != nil {
		t.Fatalf("unexpected error building random data: %v", err)
	}
	for i := range long {
		long[i] = byte(i)
	}
	writer.Write(long)
	writer.Close()
	if writer.offset != (fileWriterBufferSize + 1) {
		t.Fatalf("WriteStream not called when buffer capacity reached")
	}
}

func TestBlobDelete(t *testing.T) {
	dgst, _ := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	repo := "test.example.com/repo1"
	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "DELETE",
			Route:  "/v2/" + repo + "/blobs/" + dgst.String(),
		},
		Response: testutil.Response{
			StatusCode: http.StatusAccepted,
			Headers: http.Header(map[string][]string{
				"Content-Length": {"0"},
			}),
		},
	})

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	l := r.Blobs(ctx)
	err = l.Delete(ctx, dgst)
	if err != nil {
		t.Errorf("Error deleting blob: %s", err.Error())
	}

}

func TestListener(t *testing.T) {
	ctx := context.Background()
	registry := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), true)
	tl := &testListener{
		ops: make(map[string]int),
	}

	repository, err := registry.Repository(ctx, "foo/bar")
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	repository = Listen(repository, tl)

	// Now take the registry through a number of operations
	checkExerciseRepository(t, repository)

	expectedOps := map[string]int{
		"manifest:push": 1,
		"manifest:pull": 2,
		// "manifest:delete": 0, // deletes not supported for now
		"layer:push": 2,
		"layer:pull": 2,
		// "layer:delete":    0, // deletes not supported for now
	}

	if !reflect.DeepEqual(tl.ops, expectedOps) {
		t.Fatalf("counts do not match:\n%v\n !=\n%v", tl.ops, expectedOps)
	}

}

func TestBlobExists(t *testing.T) {
	d1, b1 := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	addTestFetch("test.example.com/repo1", d1, b1, &m)

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, "test.example.com/repo1", e, nil)
	if err != nil {
		t.Fatal(err)
	}
	l := r.Blobs(ctx)

	stat, err := l.Stat(ctx, d1)
	if err != nil {
		t.Fatal(err)
	}

	if stat.Digest != d1 {
		t.Fatalf("Unexpected digest: %s, expected %s", stat.Digest, d1)
	}

	if stat.Size != int64(len(b1)) {
		t.Fatalf("Unexpected length: %d, expected %d", stat.Size, len(b1))
	}

	// TODO(dmcgowan): Test error cases and ErrBlobUnknown case
}

func TestBlobFetch(t *testing.T) {
	d1, b1 := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	addTestFetch("test.example.com/repo1", d1, b1, &m)

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, "test.example.com/repo1", e, nil)
	if err != nil {
		t.Fatal(err)
	}
	l := r.Blobs(ctx)

	b, err := l.Get(ctx, d1)
	if err != nil {
		t.Fatal(err)
	}
	if bytes.Compare(b, b1) != 0 {
		t.Fatalf("Wrong bytes values fetched: [%d]byte != [%d]byte", len(b), len(b1))
	}

	// TODO(dmcgowan): Test for unknown blob case
}

func simpleUpload(t *testing.T, bs distribution.BlobIngester, blob []byte, expectedDigest digest.Digest) {
	ctx := context.Background()
	wr, err := bs.Create(ctx)
	if err != nil {
		t.Fatalf("unexpected error starting upload: %v", err)
	}

	nn, err := io.Copy(wr, bytes.NewReader(blob))
	if err != nil {
		t.Fatalf("error copying into blob writer: %v", err)
	}

	if nn != 0 {
		t.Fatalf("unexpected number of bytes copied: %v > 0", nn)
	}

	dgst, err := digest.FromReader(bytes.NewReader(blob))
	if err != nil {
		t.Fatalf("error getting digest: %v", err)
	}

	if dgst != expectedDigest {
		// sanity check on zero digest
		t.Fatalf("digest not as expected: %v != %v", dgst, digest.DigestTarSumV1EmptyTar)
	}

	desc, err := wr.Commit(ctx, distribution.Descriptor{Digest: dgst})
	if err != nil {
		t.Fatalf("unexpected error committing write: %v", err)
	}

	if desc.Digest != dgst {
		t.Fatalf("unexpected digest: %v != %v", desc.Digest, dgst)
	}
}

func testUploadFS(t *testing.T, numUploads int, repoName string, startedAt time.Time) (driver.StorageDriver, context.Context) {
	d := inmemory.New()
	ctx := context.Background()
	for i := 0; i < numUploads; i++ {
		addUploads(ctx, t, d, uuid.Generate().String(), repoName, startedAt)
	}
	return d, ctx
}

func TestManifestUnauthorized(t *testing.T) {
	repo := "test.example.com/repo"
	_, dgst := newRandomSchemaV1Manifest(repo, "latest", 6)
	var m testutil.RequestResponseMap

	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "GET",
			Route:  "/v2/" + repo + "/manifests/" + dgst.String(),
		},
		Response: testutil.Response{
			StatusCode: http.StatusUnauthorized,
			Body:       []byte("<html>garbage</html>"),
		},
	})

	e, c := testServer(m)
	defer c()

	r, err := NewRepository(context.Background(), repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}
	ctx := context.Background()
	ms, err := r.Manifests(ctx)
	if err != nil {
		t.Fatal(err)
	}

	_, err = ms.Get(dgst)
	if err == nil {
		t.Fatal("Expected error fetching manifest")
	}
	v2Err, ok := err.(errcode.Error)
	if !ok {
		t.Fatalf("Unexpected error type: %#v", err)
	}
	if v2Err.Code != v2.ErrorCodeUnauthorized {
		t.Fatalf("Unexpected error code: %s", v2Err.Code.String())
	}
	if expected := v2.ErrorCodeUnauthorized.Message(); v2Err.Message != expected {
		t.Fatalf("Unexpected message value: %q, expected %q", v2Err.Message, expected)
	}
}

// readStartedAtFile reads the date from an upload's startedAtFile
func readStartedAtFile(driver storageDriver.StorageDriver, path string) (time.Time, error) {
	// todo:(richardscothern) - pass in a context
	startedAtBytes, err := driver.GetContent(context.Background(), path)
	if err != nil {
		return time.Now(), err
	}
	startedAt, err := time.Parse(time.RFC3339, string(startedAtBytes))
	if err != nil {
		return time.Now(), err
	}
	return startedAt, nil
}

// TestLayerUploadZeroLength uploads zero-length
func TestLayerUploadZeroLength(t *testing.T) {
	ctx := context.Background()
	imageName := "foo/bar"
	driver := inmemory.New()
	registry := NewRegistryWithDriver(ctx, driver, memory.NewInMemoryBlobDescriptorCacheProvider(), true)
	repository, err := registry.Repository(ctx, imageName)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	bs := repository.Blobs(ctx)

	simpleUpload(t, bs, []byte{}, digest.DigestSha256EmptyTar)
}