Vendor dependencies for GCS

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

@@ -0,0 +1,64 @@
+// Copyright 2016 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"
+	"time"
+
+	"golang.org/x/net/context"
+
+	gax "github.com/googleapis/gax-go"
+)
+
+func TestRetry(t *testing.T) {
+	ctx := context.Background()
+	// Without a context deadline, retry will run until the function
+	// says not to retry any more.
+	n := 0
+	endRetry := errors.New("end retry")
+	err := retry(ctx, gax.Backoff{},
+		func() (bool, error) {
+			n++
+			if n < 10 {
+				return false, nil
+			}
+			return true, endRetry
+		},
+		func(context.Context, time.Duration) error { return nil })
+	if got, want := err, endRetry; got != want {
+		t.Errorf("got %v, want %v", err, endRetry)
+	}
+	if n != 10 {
+		t.Errorf("n: got %d, want %d", n, 10)
+	}
+
+	// If the context has a deadline, sleep will return an error
+	// and end the function.
+	n = 0
+	err = retry(ctx, gax.Backoff{},
+		func() (bool, error) { return false, nil },
+		func(context.Context, time.Duration) error {
+			n++
+			if n < 10 {
+				return nil
+			}
+			return context.DeadlineExceeded
+		})
+	if err == nil {
+		t.Error("got nil, want error")
+	}
+}