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package dissolve
import (
"errors"
"sync"
"testing"
"time"
)
func TestDissolver(t *testing.T) {
d := New(4)
_ = d.Run()
defer func() { _ = d.Close() }()
ch := make(chan struct{})
numJobs := 1024
var wg sync.WaitGroup
errCh := make(chan error, 1)
wg.Add(numJobs)
go func() {
for i := 0; i < numJobs; i++ {
err := d.Submit(func() error {
defer wg.Done()
return nil
})
if err != nil {
errCh <- err
}
}
}()
go func() {
wg.Wait()
close(ch)
}()
select {
case <-ch:
case <-time.After(time.Second):
t.Fatal("timeout")
}
select {
case err := <-errCh:
t.Fatalf("Submit returned error: %v", err)
default:
}
}
func TestDissolverErrorHandling(t *testing.T) {
d := New(4)
_ = d.Run()
defer func() { _ = d.Close() }()
var numFails int
ch := make(chan struct{}, 1)
err := d.Submit(func() error {
if numFails < 10 {
// Fail Job several times.
numFails++
return errors.New("artificial error")
}
ch <- struct{}{}
return nil
})
if err != nil {
t.Fatalf("Submit returned error: %v", err)
}
select {
case <-ch:
case <-time.After(time.Second):
t.Fatal("timeout")
}
}
func TestDissolverClose(t *testing.T) {
d := New(4)
_ = d.Run()
_ = d.Close()
ch := make(chan struct{}, 1)
err := d.Submit(func() error {
ch <- struct{}{}
return nil
})
if err == nil {
t.Fatal("Submit should return error")
}
}
func BenchmarkSubmitAndProcess(b *testing.B) {
d := New(1)
_ = d.Run()
defer func() { _ = d.Close() }()
ch := make(chan struct{}, 1)
b.ResetTimer()
for i := 0; i < b.N; i++ {
_ = d.Submit(func() error {
ch <- struct{}{}
return nil
})
<-ch
}
b.ReportAllocs()
}
func BenchmarkSubmitAndProcessParallel(b *testing.B) {
d := New(128)
_ = d.Run()
defer func() { _ = d.Close() }()
ch := make(chan struct{}, 1)
b.SetParallelism(128)
b.ResetTimer()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
_ = d.Submit(func() error {
ch <- struct{}{}
return nil
})
<-ch
}
})
b.ReportAllocs()
}
|
