/
now.go
56 lines (47 loc) · 1.73 KB
/
now.go
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// Copyright (c) 2015 Uber Technologies, Inc.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package testutils
import (
"sync"
"time"
)
// StubClock is a fake wall-clock, exposing a Now() method that returns a
// test-controlled time.
type StubClock struct {
mu sync.Mutex
cur time.Time
}
// NewStubClock returns a fake wall-clock object
func NewStubClock(initial time.Time) *StubClock {
return &StubClock{
cur: initial,
}
}
// Now returns the current time stored in StubClock
func (c *StubClock) Now() time.Time {
c.mu.Lock()
defer c.mu.Unlock()
return c.cur
}
// Elapse increments the time returned by Now()
func (c *StubClock) Elapse(addAmt time.Duration) {
c.mu.Lock()
defer c.mu.Unlock()
c.cur = c.cur.Add(addAmt)
}