[Disk Manager] fix facade/image_service_*test

cloud/disk_manager/internal/pkg/facade/disk_service_test/disk_service_test.go

@@ -78,17 +78,7 @@ func TestDiskServiceShouldFailCreateDiskFromNonExistingImage(t *testing.T) {
 		require.Error(t, err)
 		require.Contains(t, err.Error(), "not found")
 
-		status, ok := grpc_status.FromError(err)
-		require.True(t, ok)
-
-		statusDetails := status.Details()
-		require.Equal(t, 1, len(statusDetails))
-
-		errorDetails, ok := statusDetails[0].(*disk_manager.ErrorDetails)
-		require.True(t, ok)
-
-		require.Equal(t, int64(codes.BadSource), errorDetails.Code)
-		require.False(t, errorDetails.Internal)
+		testcommon.CheckErrorDetails(t, err, codes.BadSource, "", false /* internal */)
 
 		testcommon.CheckConsistency(t, ctx)
 	*/

cloud/disk_manager/internal/pkg/facade/image_service_test/image_service_test.go

@@ -14,7 +14,6 @@ import (
 	"github.com/ydb-platform/nbs/cloud/disk_manager/internal/pkg/types"
 	sdk_client "github.com/ydb-platform/nbs/cloud/disk_manager/pkg/client"
 	"github.com/ydb-platform/nbs/cloud/disk_manager/pkg/client/codes"
-	grpc_status "google.golang.org/grpc/status"
 )
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -651,18 +650,13 @@ func testShouldFailCreateImageFromImageFileURL(
 	err = internal_client.WaitOperation(ctx, client, operation.Id)
 	require.Error(t, err)
 
-	status, ok := grpc_status.FromError(err)
-	require.True(t, ok)
-
-	statusDetails := status.Details()
-	require.Equal(t, 1, len(statusDetails))
-
-	errorDetails, ok := statusDetails[0].(*disk_manager.ErrorDetails)
-	require.True(t, ok)
-
-	require.Equal(t, int64(codes.BadSource), errorDetails.Code)
-	require.False(t, errorDetails.Internal)
-	require.Equal(t, errorDetailsMessage, errorDetails.Message)
+	testcommon.CheckErrorDetails(
+		t,
+		err,
+		codes.BadSource,
+		errorDetailsMessage,
+		true, // internal
+	)
 
 	testcommon.CheckConsistency(t, ctx)
 }

cloud/disk_manager/internal/pkg/facade/testcommon/common.go

@@ -13,6 +13,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/golang/protobuf/ptypes/empty"
 	"github.com/google/uuid"
 	"github.com/stretchr/testify/require"
@@ -674,3 +675,33 @@ func GetEncryptionKeyHash(encryptionDesc *types.EncryptionDesc) ([]byte, error)
 		return nil, errors.NewNonRetriableErrorf("unknown key %s", key)
 	}
 }
+
+////////////////////////////////////////////////////////////////////////////////
+
+func CheckErrorDetails(
+	t *testing.T,
+	err error,
+	code int,
+	message string,
+	internal bool,
+) {
+
+	status, ok := grpc_status.FromError(err)
+	require.True(t, ok)
+
+	statusDetails := status.Details()
+	require.Equal(t, 1, len(statusDetails))
+
+	protoMessage, err := proto.Marshal(statusDetails[0].(proto.Message))
+	require.NoError(t, err)
+
+	var errorDetails disk_manager.ErrorDetails
+	err = proto.Unmarshal(protoMessage, &errorDetails)
+	require.NoError(t, err)
+
+	require.Equal(t, int64(code), errorDetails.Code)
+	require.False(t, errorDetails.Internal)
+	if len(message) != 0 {
+		require.Equal(t, message, errorDetails.Message)
+	}
+}