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pump_test.go
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pump_test.go
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// Copyright (c) 2017 letian0805@gmail.com
//
// 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 pipeline_test
import (
"reflect"
"strconv"
"sync"
"testing"
"github.com/letiantech/pipeline"
)
type tA struct {
s string
}
func (a *tA) Tag() string {
return reflect.TypeOf(a).String()
}
type tB struct {
s string
}
func (b *tB) Tag() string {
return reflect.TypeOf(b).String()
}
func dataFilter(data pipeline.Data) pipeline.Data {
switch v := data.(type) {
case *tB:
return &tA{
s: v.s,
}
case *tA:
return &tB{
s: v.s,
}
}
return nil
}
func TestPump(t *testing.T) {
const speedIn = 100
const speedOut = 500
const count = 300
pipes := []pipeline.Pipe{
new(pipeline.BasePipe).Init(10),
new(pipeline.BasePipe).Init(10),
new(pipeline.BasePipe).Init(10),
}
sources := make([]pipeline.Source, len(pipes))
sinks := make([]pipeline.Sink, len(pipes))
for i := 0; i < len(pipes); i++ {
sources[i] = pipes[i].GetSource()
sinks[i] = pipes[i].GetSink()
sources[i].SetSpeed(speedOut)
sinks[i].SetSpeed(speedIn)
}
at := (&tA{}).Tag()
bt := (&tB{}).Tag()
p := new(pipeline.BasePump).Init(sources[0])
p.AddSink(sinks[1], at)
p.AddSink(sinks[2], bt)
p.AddFilter(dataFilter, at)
p.AddFilter(dataFilter, bt)
p.Start()
wg := sync.WaitGroup{}
go func() {
wg.Add(1)
for i := 0; i < count; i++ {
if i%2 == 0 {
a := &tA{
s: strconv.Itoa(i),
}
sinks[0].Push(a)
} else {
b := &tB{
s: strconv.Itoa(i),
}
sinks[0].Push(b)
}
}
wg.Done()
}()
go func() {
wg.Add(1)
for j := 0; j < count/2-1; j++ {
data := sources[1].Pull()
tag := data.Tag()
if tag != at {
t.Fatal(tag)
}
}
wg.Done()
}()
for j := 0; j < count/2-1; j++ {
data := sources[2].Pull()
tag := data.Tag()
if tag != bt {
t.Fatal(tag)
}
}
wg.Wait()
t.Log("ok")
}