Update dependencies

Among others, this updates minio-go, so that the new "eu-west-3" zone
for AWS is supported.

vendor/cloud.google.com/go/internal/annotate_test.go

@@ -0,0 +1,65 @@
+// Copyright 2017 Google Inc. 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 internal
+
+import (
+	"errors"
+	"testing"
+
+	"google.golang.org/api/googleapi"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+const wantMessage = "prefix: msg"
+
+func TestAnnotateGRPC(t *testing.T) {
+	// grpc Status error
+	err := status.Error(codes.NotFound, "msg")
+	err = Annotate(err, "prefix")
+	got, ok := status.FromError(err)
+	if !ok {
+		t.Fatalf("got %T, wanted a status", got)
+	}
+	if g, w := got.Code(), codes.NotFound; g != w {
+		t.Errorf("got code %v, want %v", g, w)
+	}
+	if g, w := got.Message(), wantMessage; g != w {
+		t.Errorf("got message %q, want %q", g, w)
+	}
+}
+
+func TestAnnotateGoogleapi(t *testing.T) {
+	// googleapi error
+	var err error = &googleapi.Error{Code: 403, Message: "msg"}
+	err = Annotate(err, "prefix")
+	got2, ok := err.(*googleapi.Error)
+	if !ok {
+		t.Fatalf("got %T, wanted a googleapi.Error", got2)
+	}
+	if g, w := got2.Code, 403; g != w {
+		t.Errorf("got code %d, want %d", g, w)
+	}
+	if g, w := got2.Message, wantMessage; g != w {
+		t.Errorf("got message %q, want %q", g, w)
+	}
+}
+
+func TestAnnotateUnknownError(t *testing.T) {
+	err := Annotate(errors.New("msg"), "prefix")
+	if g, w := err.Error(), wantMessage; g != w {
+		t.Errorf("got message %q, want %q", g, w)
+	}
+}