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lazy_test.go
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/
lazy_test.go
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// Copyright 2022 The syncx 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 syncx
import (
"testing"
"time"
)
var one = Lazy[int]{
Init: func() int {
time.Sleep(time.Second) // simulate slow work
return 1
},
}
func run(t *testing.T, c chan bool) {
if v := one.Get(); v != 1 {
t.Errorf("lazy failed inside run: %d is not 1", v)
}
c <- true
}
func TestLazy(t *testing.T) {
c := make(chan bool)
const N = 20
for i := 0; i < N; i++ {
go run(t, c)
}
for i := 0; i < N; i++ {
<-c
}
if one.val != 1 {
t.Errorf("lazy failed outside run: %d is not 1", one.val)
}
}
func BenchmarkLazy(b *testing.B) {
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
one.Get()
}
})
}