1 files changed, 148 insertions, 0 deletions
diff --git a/pkg/v1/remote/layer_test.go b/pkg/v1/remote/layer_test.go
new file mode 100644
index 0000000..a2f56bd
--- /dev/null
+++ b/pkg/v1/remote/layer_test.go
@@ -0,0 +1,148 @@
+// Copyright 2019 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 remote
+
+import (
+	"fmt"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/google/go-containerregistry/internal/compare"
+	"github.com/google/go-containerregistry/pkg/name"
+	"github.com/google/go-containerregistry/pkg/registry"
+	"github.com/google/go-containerregistry/pkg/v1/empty"
+	"github.com/google/go-containerregistry/pkg/v1/mutate"
+	"github.com/google/go-containerregistry/pkg/v1/partial"
+	"github.com/google/go-containerregistry/pkg/v1/random"
+	"github.com/google/go-containerregistry/pkg/v1/types"
+	"github.com/google/go-containerregistry/pkg/v1/validate"
+)
+
+func TestRemoteLayer(t *testing.T) {
+	layer, err := random.Layer(1024, types.DockerLayer)
+	if err != nil {
+		t.Fatal(err)
+	}
+	digest, err := layer.Digest()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Set up a fake registry and write what we pulled to it.
+	// This ensures we get coverage for the remoteLayer.MediaType path.
+	s := httptest.NewServer(registry.New())
+	defer s.Close()
+	t.Log(s.URL)
+	u, err := url.Parse(s.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log(u)
+	dst := fmt.Sprintf("%s/some/path@%s", u.Host, digest)
+	t.Log(dst)
+	ref, err := name.NewDigest(dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(ref)
+	if err := WriteLayer(ref.Context(), layer); err != nil {
+		t.Fatalf("failed to WriteLayer: %v", err)
+	}
+
+	got, err := Layer(ref)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if _, err := got.MediaType(); err != nil {
+		t.Errorf("reading MediaType: %v", err)
+	}
+
+	if err := compare.Layers(got, layer); err != nil {
+		t.Errorf("compare.Layers: %v", err)
+	}
+	if err := validate.Layer(got); err != nil {
+		t.Errorf("validate.Layer: %v", err)
+	}
+
+	if ok, err := partial.Exists(got); err != nil {
+		t.Fatal(err)
+	} else if got, want := ok, true; got != want {
+		t.Errorf("Exists() = %t != %t", got, want)
+	}
+}
+
+func TestRemoteLayerDescriptor(t *testing.T) {
+	layer, err := random.Layer(1024, types.DockerLayer)
+	if err != nil {
+		t.Fatal(err)
+	}
+	image, err := mutate.Append(empty.Image, mutate.Addendum{
+		Layer: layer,
+		URLs:  []string{"example.com"},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Set up a fake registry and write what we pulled to it.
+	// This ensures we get coverage for the remoteLayer.MediaType path.
+	s := httptest.NewServer(registry.New())
+	defer s.Close()
+	u, err := url.Parse(s.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	dst := fmt.Sprintf("%s/some/path:tag", u.Host)
+	ref, err := name.ParseReference(dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := Write(ref, image); err != nil {
+		t.Fatalf("failed to WriteLayer: %v", err)
+	}
+
+	pulled, err := Image(ref)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	layers, err := pulled.Layers()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	desc, err := partial.Descriptor(layers[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(desc.URLs) != 1 {
+		t.Fatalf("expected url for layer[0]")
+	}
+
+	if got, want := desc.URLs[0], "example.com"; got != want {
+		t.Errorf("layer[0].urls[0] = %s != %s", got, want)
+	}
+	if ok, err := partial.Exists(layers[0]); err != nil {
+		t.Fatal(err)
+	} else if got, want := ok, true; got != want {
+		t.Errorf("Exists() = %t != %t", got, want)
+	}
+}