packer-cn/packer/progressbar_test.go

72 lines
1.5 KiB
Go

package packer
import (
"sync"
"testing"
"time"
"github.com/cheggaaa/pb"
)
func speedyProgressBar(bar *pb.ProgressBar) {
bar.SetUnits(pb.U_BYTES)
bar.SetRefreshRate(1 * time.Millisecond)
bar.NotPrint = true
bar.Format("[\x00=\x00>\x00-\x00]")
}
func TestStackableProgressBar_race(t *testing.T) {
bar := &StackableProgressBar{
ConfigProgressbarFN: speedyProgressBar,
}
start42Fn := func() { bar.Start(42) }
finishFn := func() { bar.Finish() }
add21 := func() { bar.Add(21) }
// prefix := func() { bar.prefix() }
type fields struct {
pre func()
calls []func()
post func()
}
tests := []struct {
name string
fields fields
iterations int
}{
{"all public", fields{nil, []func(){start42Fn, finishFn, add21, add21}, finishFn}, 300},
{"add", fields{start42Fn, []func(){add21}, finishFn}, 300},
{"add start", fields{start42Fn, []func(){start42Fn, add21}, finishFn}, 300},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
for i := 0; i < tt.iterations; i++ {
if tt.fields.pre != nil {
tt.fields.pre()
}
var startWg, endWg sync.WaitGroup
startWg.Add(1)
endWg.Add(len(tt.fields.calls))
for _, call := range tt.fields.calls {
call := call
go func() {
defer endWg.Done()
startWg.Wait()
call()
}()
}
startWg.Done() // everyone is initialized, let's unlock everyone at the same time.
// ....
endWg.Wait() // wait for all calls to return.
if tt.fields.post != nil {
tt.fields.post()
}
}
})
}
}