test: add interface tests for Repository, blobStore and manifestStore (…

…#313)

Signed-off-by: wangxiaoxuan273 <[email protected]>

registry/remote/interface_test.go

@@ -0,0 +1,38 @@
+/*
+Copyright The ORAS 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 remote_test
+
+import (
+	"testing"
+
+	"oras.land/oras-go/v2"
+	"oras.land/oras-go/v2/internal/interfaces"
+	"oras.land/oras-go/v2/registry"
+	"oras.land/oras-go/v2/registry/remote"
+)
+
+func TestRepositoryInterface(t *testing.T) {
+	var repo interface{} = &remote.Repository{}
+	if _, ok := repo.(registry.Repository); !ok {
+		t.Error("&Repository{} does not conform registry.Repository")
+	}
+	if _, ok := repo.(oras.GraphTarget); !ok {
+		t.Error("&Repository{} does not conform oras.GraphTarget")
+	}
+	if _, ok := repo.(interfaces.ReferenceParser); !ok {
+		t.Error("&Repository{} does not conform interfaces.ReferenceParser")
+	}
+}

registry/remote/repository_test.go

@@ -36,9 +36,9 @@ import (
 	"github.com/opencontainers/go-digest"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	artifactspec "github.com/oras-project/artifacts-spec/specs-go/v1"
-	"oras.land/oras-go/v2/content"
 	"oras.land/oras-go/v2/errdef"
 	"oras.land/oras-go/v2/internal/descriptor"
+	"oras.land/oras-go/v2/internal/interfaces"
 	"oras.land/oras-go/v2/registry"
 	"oras.land/oras-go/v2/registry/remote/auth"
 )
@@ -118,16 +118,6 @@ func getTestIOStructMapForGetDescriptorClass() map[string]testIOStruct {
 	}
 }
 
-func TestRepositoryInterface(t *testing.T) {
-	var repo interface{} = &Repository{}
-	if _, ok := repo.(registry.Repository); !ok {
-		t.Error("&Repository{} does not conform registry.Repository")
-	}
-	if _, ok := repo.(content.GraphStorage); !ok {
-		t.Error("&Repository{} does not conform content.GraphStorage")
-	}
-}
-
 func TestRepository_Fetch(t *testing.T) {
 	blob := []byte("hello world")
 	blobDesc := ocispec.Descriptor{
@@ -2455,6 +2445,13 @@ func Test_generateBlobDescriptorWithVariousDockerContentDigestHeaders(t *testing
 	}
 }
 
+func TestManifestStoreInterface(t *testing.T) {
+	var ms interface{} = &manifestStore{}
+	if _, ok := ms.(interfaces.ReferenceParser); !ok {
+		t.Error("&manifestStore{} does not conform interfaces.ReferenceParser")
+	}
+}
+
 func Test_ManifestStore_Fetch(t *testing.T) {
 	manifest := []byte(`{"layers":[]}`)
 	manifestDesc := ocispec.Descriptor{