/
spackler_test.go
297 lines (235 loc) · 4.42 KB
/
spackler_test.go
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package spackler
import (
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
const SHORT_TIMEOUT = time.Duration(1 * time.Second)
const LONG_TIMEOUT = time.Duration(30 * time.Second)
func Test_No_Goroutines(t *testing.T) {
s := New(false)
assert.True(t, wait(s, SHORT_TIMEOUT))
}
func Test_Stop(t *testing.T) {
s1 := New(false)
wg := sync.WaitGroup{}
wg.Add(1)
s1.Go(func(s2 *Caddy) {
defer wg.Done()
})
wg.Wait()
assert.False(t, wait(s1, SHORT_TIMEOUT)) // Stop() required
s1.Stop()
assert.True(t, wait(s1, LONG_TIMEOUT))
}
func Test_SigChan(t *testing.T) {
s1 := New(false)
sigChan := s1.SigChan()
s1.Go(func(s2 *Caddy) {
return
})
close(sigChan) // same as Stop()
assert.True(t, wait(s1, LONG_TIMEOUT))
}
func Test_Blocking(t *testing.T) {
s1 := New(false)
c1 := make(chan int)
c2 := make(chan int)
// create a blocked goroutine
s1.Go(func(s2 *Caddy) {
<-c1
})
s1.Stop()
go func() {
c2 <- 1
s1.Wait()
close(c2)
}()
<-c2 // ensure the waiting goroutine has started
select {
case <-c2:
assert.True(t, false) // we should be blocked
default:
assert.True(t, true)
}
c1 <- 1 // unblock the spackler goroutine
select {
case <-c2:
assert.True(t, true)
case <-time.After(LONG_TIMEOUT):
assert.True(t, false) // spackler should unblock
}
}
func Test_Nested_Goroutines(t *testing.T) {
s1 := New(false)
m := sync.Mutex{}
x := 0
s1.Go(func(s2 *Caddy) {
s2.Go(func(s3 *Caddy) {
m.Lock()
x++
m.Unlock()
})
m.Lock()
x++
m.Unlock()
})
s1.Stop()
assert.True(t, wait(s1, LONG_TIMEOUT))
assert.True(t, 2 == x)
}
func Test_While_Stopping(t *testing.T) {
s1 := New(false)
c := make(chan int)
s1.Go(func(s2 *Caddy) {
<-c
err := s2.Go(func(s3 *Caddy) {
return
})
assert.Nil(t, err)
})
s1.Stop()
c <- 1
err := s1.Go(func(s2 *Caddy) {
return
})
assert.True(t, nil != err)
}
func Test_Ten_Goroutines(t *testing.T) {
s1 := New(false)
m := sync.Mutex{}
x := 0
for i := 0; i < 10; i++ {
s1.Go(func(s2 *Caddy) {
m.Lock()
x++
m.Unlock()
})
}
s1.Stop()
assert.True(t, wait(s1, LONG_TIMEOUT))
assert.True(t, 10 == x)
}
func Test_Multiple_Nested_Goroutines(t *testing.T) {
s1 := New(false)
m := sync.Mutex{}
x := 0
for i := 0; i < 10; i++ {
s1.Go(func(s2 *Caddy) {
m.Lock()
x++
m.Unlock()
for j := 0; j < 10; j++ {
s2.Go(func(s3 *Caddy) {
m.Lock()
x++
m.Unlock()
})
}
})
}
s1.Stop()
assert.True(t, wait(s1, LONG_TIMEOUT))
assert.True(t, 110 == x)
}
func Test_Looper_Zero_Duration(t *testing.T) {
s1 := New(false)
c := make(chan int)
x := 0
s1.Go(func(s2 *Caddy) {
s2.Looper(0, false, func() {
c <- 1
x++
c <- 1
})
})
<-c // start loop func
<-c // end loop func
<-c // start loop func
<-c // end loop func
<-c // start loop func
s1.Stop() // broadcast quit
<-c // end loop func
assert.True(t, wait(s1, LONG_TIMEOUT))
assert.True(t, 3 == x)
}
func Test_Looper_NonZero_Duration(t *testing.T) {
s1 := New(false)
c := make(chan int)
x := 0
s1.Go(func(s2 *Caddy) {
s2.Looper(1, false, func() {
c <- 1
x++
c <- 1
})
})
<-c // start loop func
<-c // end loop func
<-c // start loop func
<-c // end loop func
<-c // start loop func
s1.Stop() // broadcast quit
<-c // end loop func
assert.True(t, wait(s1, LONG_TIMEOUT))
assert.True(t, 3 == x)
}
func Test_Looper_RunImmediately(t *testing.T) {
s1 := New(false)
c := make(chan int)
looperTime := time.Second * 3
s1.Go(func(s2 *Caddy) {
s2.Looper(looperTime, true, func() {
close(c)
})
})
select {
case <-c:
assert.True(t, true)
case <-time.After(looperTime - 100):
assert.True(t, false)
}
s1.Stop()
}
func Test_Looper_With_Goroutine(t *testing.T) {
s1 := New(false)
c := make(chan int)
m := sync.Mutex{}
x := 0
s1.Go(func(s2 *Caddy) {
s2.Looper(0, false, func() {
c <- 1
s2.Go(func(s3 *Caddy) {
m.Lock()
x++
m.Unlock()
})
c <- 1
})
})
<-c // start loop func
<-c // end loop func
<-c // start loop func
<-c // end loop func
<-c // start loop func
s1.Stop() // broadcast quit
<-c // end loop func
assert.True(t, wait(s1, LONG_TIMEOUT))
assert.True(t, 3 == x)
}
// true if Caddy.Wait() returns in time
func wait(s *Caddy, timeout time.Duration) bool {
c := make(chan int)
go func() {
s.Wait()
close(c)
}()
pass := false
select {
case <-c:
pass = true
case <-time.After(timeout):
}
return pass
}