Add NewTicker to the Clock Interface

benchmarks/go.sum

@@ -1,11 +1,11 @@
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
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@@ -19,12 +19,10 @@ github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V
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-github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
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@@ -48,7 +46,6 @@ github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
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@@ -60,11 +57,10 @@ github.com/smartystreets/go-aws-auth v0.0.0-20180515143844-0c1422d1fdb9/go.mod h
 github.com/smartystreets/gunit v1.0.0/go.mod h1:qwPWnhz6pn0NnRBP++URONOVyNkPyr4SauJk4cUOwJs=
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@@ -73,16 +69,14 @@ github.com/tj/go-spin v1.1.0/go.mod h1:Mg1mzmePZm4dva8Qz60H2lHwmJ2loum4VIrLgVnKw
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-golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -97,26 +91,21 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/p
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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clock.go

@@ -20,13 +20,14 @@
 
 package zap
 
-import "time"
+import (
+	"time"
+
+	"go.uber.org/zap/zapcore"
+)
 
 // Clock is a source of time for logged entries.
-type Clock interface {
-	// Now returns the current local time.
-	Now() time.Time
-}
+type Clock = zapcore.Clock
 
 // systemClock implements default Clock that uses system time.
 type systemClock struct{}
@@ -36,3 +37,7 @@ var _systemClock Clock = systemClock{}
 func (systemClock) Now() time.Time {
 	return time.Now()
 }
+
+func (systemClock) NewTicker(duration time.Duration) *time.Ticker {
+	return time.NewTicker(duration)
+}

clock_test.go

@@ -32,6 +32,9 @@ import (
 type constantClock time.Time
 
 func (c constantClock) Now() time.Time { return time.Time(c) }
+func (c constantClock) NewTicker(d time.Duration) *time.Ticker {
+	return &time.Ticker{}
+}
 
 func TestWithClock(t *testing.T) {
 	date := time.Date(2077, 1, 23, 10, 15, 13, 441, time.UTC)

go.mod

@@ -3,9 +3,11 @@ module go.uber.org/zap
 go 1.13
 
 require (
+	github.com/benbjohnson/clock v1.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/stretchr/testify v1.7.0
 	go.uber.org/atomic v1.7.0
+	go.uber.org/goleak v1.1.10
 	go.uber.org/multierr v1.6.0
 	gopkg.in/yaml.v2 v2.2.8
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect

go.sum

@@ -1,20 +1,44 @@
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zapcore/clock.go

@@ -0,0 +1,34 @@
+// Copyright (c) 2021 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 zapcore
+
+import (
+	"time"
+)
+
+// Clock is a source of time for logged entries.
+type Clock interface {
+	// Now returns the current local time.
+	Now() time.Time
+	// NewTicker returns *time.Ticker that holds a channel
+	// that delivers ``ticks'' of a clock.
+	NewTicker(time.Duration) *time.Ticker
+}

zapcore/clock_test.go

@@ -0,0 +1,67 @@
+// Copyright (c) 2021 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 zapcore
+
+import (
+	"testing"
+	"time"
+
+	"github.com/benbjohnson/clock"
+	"github.com/stretchr/testify/assert"
+	"go.uber.org/atomic"
+)
+
+type controlledClock struct{ *clock.Mock }
+
+func newControlledClock() *controlledClock {
+	return &controlledClock{clock.NewMock()}
+}
+func (c *controlledClock) NewTicker(d time.Duration) *time.Ticker {
+	return &time.Ticker{C: c.Ticker(d).C}
+}
+
+func TestMockClock(t *testing.T) {
+	var n atomic.Int32
+	ctrlMock := newControlledClock()
+
+	done := make(chan struct{})
+	defer func() { <-done }() // wait for end
+
+	quit := make(chan struct{})
+	// Create a channel to increment every microsecond.
+	go func(ticker *time.Ticker) {
+		defer close(done)
+		for {
+			select {
+			case <-quit:
+				ticker.Stop()
+				return
+			case <-ticker.C:
+				n.Inc()
+			}
+		}
+	}(ctrlMock.NewTicker(time.Microsecond))
+
+	// Move clock forward.
+	ctrlMock.Add(2 * time.Microsecond)
+	assert.Equal(t, int32(2), n.Load())
+	close(quit)
+}

zapcore/leak_test.go

@@ -0,0 +1,31 @@
+// Copyright (c) 2021 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 zapcore
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}