Vendor dependencies for GCS

vendor/google.golang.org/api/gensupport/util_test.go

@@ -0,0 +1,57 @@
+// Copyright 2016 Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package gensupport
+
+import (
+	"io"
+	"time"
+)
+
+// errReader reads out of a buffer until it is empty, then returns the specified error.
+type errReader struct {
+	buf []byte
+	err error
+}
+
+func (er *errReader) Read(p []byte) (int, error) {
+	if len(er.buf) == 0 {
+		if er.err == nil {
+			return 0, io.EOF
+		}
+		return 0, er.err
+	}
+	n := copy(p, er.buf)
+	er.buf = er.buf[n:]
+	return n, nil
+}
+
+// UniformPauseStrategy implements BackoffStrategy with uniform pause.
+type UniformPauseStrategy time.Duration
+
+func (p UniformPauseStrategy) Pause() (time.Duration, bool) { return time.Duration(p), true }
+func (p UniformPauseStrategy) Reset()                       {}
+
+// NoPauseStrategy implements BackoffStrategy with infinite 0-length pauses.
+const NoPauseStrategy = UniformPauseStrategy(0)
+
+// LimitRetryStrategy wraps a BackoffStrategy but limits the number of retries.
+type LimitRetryStrategy struct {
+	Max      int
+	Strategy BackoffStrategy
+	n        int
+}
+
+func (l *LimitRetryStrategy) Pause() (time.Duration, bool) {
+	l.n++
+	if l.n > l.Max {
+		return 0, false
+	}
+	return l.Strategy.Pause()
+}
+
+func (l *LimitRetryStrategy) Reset() {
+	l.n = 0
+	l.Strategy.Reset()
+}