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|
package xdelta
import (
"fmt"
"sync"
"time"
)
type TestGroup struct {
*Runner
sync.Mutex
running []Goroutine
errors []error
waitChan <-chan bool
}
type Goroutine struct {
name string
errChan chan error
}
func NewTestGroup(r *Runner) (*TestGroup, Goroutine) {
g := Goroutine{"main", make(chan error)}
wc := make(chan bool)
tg := &TestGroup{Runner: r, running: []Goroutine{g}, waitChan: wc}
go waitAll(tg, wc)
return tg, g
}
func (g *Goroutine) String() string {
return fmt.Sprint("[", g.name, "]")
}
func (g *Goroutine) OK() {
if g.errChan != nil {
g.errChan <- nil
_ = <- g.errChan
g.errChan = nil
}
}
func (g *Goroutine) Panic(err error) {
fmt.Print("[", g.name, "] ", err, "\n")
if g.errChan != nil {
g.errChan <- err
_ = <- g.errChan
}
select {}
}
func (t *TestGroup) Go(name string, f func(Goroutine)) {
g := Goroutine{name, make(chan error)}
t.Lock()
t.running = append(t.running, g)
t.Unlock()
go f(g)
}
func (t *TestGroup) Wait(g Goroutine) {
g.OK()
t.Lock()
wc := t.waitChan
t.waitChan = nil
t.Unlock()
_ = <- wc
t.Lock()
errs := t.errors
t.Unlock()
if len(errs) != 0 {
panic(fmt.Sprintln(len(errs), "errors in test"))
}
}
func waitAll(t *TestGroup, wc chan bool) {
for {
t.Lock()
// for _, x := range t.running {
// fmt.Println("RUNNING", x.name)
// }
if len(t.running) == 0 {
t.Unlock()
break
}
runner := t.running[0]
t.running = t.running[1:]
t.Unlock()
timeout := time.After(time.Second)
// fmt.Println("Waiting on", runner)
select {
case err := <- runner.errChan:
runner.errChan <- err
if err != nil {
// fmt.Println("[G]", runner, err)
t.Lock()
t.errors = append(t.errors, err)
t.Unlock()
} else {
// fmt.Println("[G]", runner, "OK")
}
case <- timeout:
t.Lock()
t.running = append(t.running, runner)
t.Unlock()
}
}
wc <- true
}
|
