pkg/test/clock.go

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 test

import (
	"sync"
	"time"
)

type Clock struct {
	now time.Time
	sync.Mutex
}

func NewClock(t time.Time) *Clock {
	return &Clock{now: t}
}

func (c *Clock) Now() time.Time {
	c.Lock()
	defer c.Unlock()
	return c.now
}

func (c *Clock) Add(duration time.Duration) {
	c.Lock()
	c.now = c.now.Add(duration)
	c.Unlock()
}