Remove libs/clock in favor of luci-go/common/clock.

go/src/infra/libs/clock/testclock/testclock_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 testclock
-
-import (
-        "testing"
-        "time"
-
-        . "github.com/smartystreets/goconvey/convey"
-        "infra/libs/clock"
-)
-
-func TestTestClock(t *testing.T) {
-        t.Parallel()
-
-        Convey(`A testing clock instance`, t, func() {
-                now := time.Date(2015, 01, 01, 00, 00, 00, 00, time.UTC)
-                c := New(now)
-
-                Convey(`Returns the current time.`, func() {
-                        So(c.Now(), ShouldResemble, now)
-                })
-
-                Convey(`When sleeping with a time of zero, immediately awakens.`, func() {
-                        c.Sleep(0)
-                        So(c.Now(), ShouldResemble, now)
-                })
-
-                Convey(`When sleeping for a period of time, awakens when signalled.`, func() {
-                        sleepingC := make(chan struct{})
-                        c.SetTimerCallback(func(_ clock.Timer) {
-                                close(sleepingC)
-                        })
-
-                        awakeC := make(chan time.Time)
-                        go func() {
-                                c.Sleep(2 * time.Second)
-                                awakeC <- c.Now()
-                        }()
-
-                        <-sleepingC
-                        c.Set(now.Add(1 * time.Second))
-                        c.Set(now.Add(2 * time.Second))
-                        So(<-awakeC, ShouldResemble, now.Add(2*time.Second))
-                })
-
-                Convey(`Awakens after a period of time.`, func() {
-                        afterC := c.After(2 * time.Second)
-
-                        c.Set(now.Add(1 * time.Second))
-                        c.Set(now.Add(2 * time.Second))
-                        So(<-afterC, ShouldResemble, now.Add(2*time.Second))
-                })
-        })
-}