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deadlock_debug_test.go
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deadlock_debug_test.go
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//go:build deadlockdebug
// +build deadlockdebug
package gorex
import (
"testing"
"time"
)
type writeWaiter struct {
c chan struct{}
}
func (w *writeWaiter) Write(b []byte) (int, error) {
close(w.c)
return len(b), nil
}
func TestDeadlockDebug(t *testing.T) {
t.Run("positive", func(t *testing.T) {
t.Run("(*Mutex).Lock", func(t *testing.T) {
exitC = make(chan struct{})
waiter := writeWaiter{c: make(chan struct{})}
debugPanicOut = &waiter
go func() {
locker := &Mutex{}
locker.Lock()
}()
time.Sleep(time.Microsecond)
select {
case <-waiter.c:
case <-time.After(time.Millisecond):
t.Errorf("no debug info received :(")
case <-exitC:
t.Errorf("no debug info received :(")
}
})
})
t.Run("negative", func(t *testing.T) {
t.Run("(*Mutex).Lock&Unlock", func(t *testing.T) {
exitC = make(chan struct{})
waiter := writeWaiter{c: make(chan struct{})}
debugPanicOut = &waiter
go func() {
locker := &Mutex{}
locker.Lock()
locker.Unlock()
}()
time.Sleep(time.Microsecond)
select {
case <-waiter.c:
t.Errorf("received debug info, while shouldn't")
case <-time.After(time.Millisecond):
case <-exitC:
}
})
})
}