Add Context cancellation to clock.

common/meter/config_test.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package meter
-
-import (
-        "testing"
-        "time"
-
-        . "github.com/smartystreets/goconvey/convey"
-)
-
-func TestConfig(t *testing.T) {
-        Convey(`An zero (unmetered) config instance`, t, func() {
-                cfg := new(Config)
-
-                Convey(`It will register as unconstained.`, func() {
-                        So(cfg.HasFlushConstraints(), ShouldBeFalse)
-                })
-        })
-
-        Convey(`A configured config instance`, t, func() {
-                cfg := &Config{
-                        Count: 10,
-                        Delay: 1 * time.Second,
-                }
-
-                Convey(`Will register as metered.`, func() {
-                        So(cfg.HasFlushConstraints(), ShouldBeTrue)
-                })
-        })
-}