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// Copyright 2022 The Go 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 rate_test
import (
"fmt"
"math"
"testing"
"time"
"golang.org/x/time/rate"
)
func ExampleSometimes_once() {
// The zero value of Sometimes behaves like sync.Once, though less efficiently.
var s rate.Sometimes
s.Do(func() { fmt.Println("1") })
s.Do(func() { fmt.Println("2") })
s.Do(func() { fmt.Println("3") })
// Output:
// 1
}
func ExampleSometimes_first() {
s := rate.Sometimes{First: 2}
s.Do(func() { fmt.Println("1") })
s.Do(func() { fmt.Println("2") })
s.Do(func() { fmt.Println("3") })
// Output:
// 1
// 2
}
func ExampleSometimes_every() {
s := rate.Sometimes{Every: 2}
s.Do(func() { fmt.Println("1") })
s.Do(func() { fmt.Println("2") })
s.Do(func() { fmt.Println("3") })
// Output:
// 1
// 3
}
func ExampleSometimes_interval() {
s := rate.Sometimes{Interval: 1 * time.Second}
s.Do(func() { fmt.Println("1") })
s.Do(func() { fmt.Println("2") })
time.Sleep(1 * time.Second)
s.Do(func() { fmt.Println("3") })
// Output:
// 1
// 3
}
func ExampleSometimes_mix() {
s := rate.Sometimes{
First: 2,
Every: 2,
Interval: 2 * time.Second,
}
s.Do(func() { fmt.Println("1 (First:2)") })
s.Do(func() { fmt.Println("2 (First:2)") })
s.Do(func() { fmt.Println("3 (Every:2)") })
time.Sleep(2 * time.Second)
s.Do(func() { fmt.Println("4 (Interval)") })
s.Do(func() { fmt.Println("5 (Every:2)") })
s.Do(func() { fmt.Println("6") })
// Output:
// 1 (First:2)
// 2 (First:2)
// 3 (Every:2)
// 4 (Interval)
// 5 (Every:2)
}
func TestSometimesZero(t *testing.T) {
s := rate.Sometimes{Interval: 0}
s.Do(func() {})
s.Do(func() {})
}
func TestSometimesMax(t *testing.T) {
s := rate.Sometimes{Interval: math.MaxInt64}
s.Do(func() {})
s.Do(func() {})
}
func TestSometimesNegative(t *testing.T) {
s := rate.Sometimes{Interval: -1}
s.Do(func() {})
s.Do(func() {})
}
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