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package lifecycle
import (
"context"
"testing"
"time"
"github.com/pkg/errors"
)
func buildPause() (func(error), PauseResumer) {
ch := make(chan error)
return func(err error) {
ch <- err
},
PauseResumerFunc(
func(ctx context.Context) error {
select {
case <-ctx.Done():
return ctx.Err()
case err := <-ch:
return err
}
},
func(ctx context.Context) error {
return nil
},
)
}
func TestMultiPauseResume(t *testing.T) {
t.Run("simple success", func(t *testing.T) {
to := time.NewTimer(time.Second)
defer to.Stop()
done1, pr1 := buildPause()
done2, pr2 := buildPause()
ctx := context.Background()
errCh := make(chan error)
go func() { errCh <- MultiPauseResume(pr1, pr2).Pause(ctx) }()
done1(nil)
done2(nil)
select {
case err := <-errCh:
if err != nil {
t.Errorf("got %v; want nil", err)
}
case <-to.C:
t.Fatal("never returned")
}
})
t.Run("external cancellation", func(t *testing.T) {
to := time.NewTimer(time.Second)
defer to.Stop()
_, pr1 := buildPause()
_, pr2 := buildPause()
ctx, cancel := context.WithCancel(context.Background())
errCh := make(chan error)
go func() { errCh <- MultiPauseResume(pr1, pr2).Pause(ctx) }()
cancel()
select {
case err := <-errCh:
if err == nil {
t.Error("got nil; want err")
}
case <-to.C:
t.Fatal("never returned")
}
})
t.Run("external cancellation", func(t *testing.T) {
to := time.NewTimer(time.Second)
defer to.Stop()
done1, pr1 := buildPause()
_, pr2 := buildPause()
ctx, cancel := context.WithCancel(context.Background())
errCh := make(chan error)
go func() { errCh <- MultiPauseResume(pr1, pr2).Pause(ctx) }()
done1(nil)
cancel()
select {
case err := <-errCh:
if err == nil {
t.Error("got nil; want err")
}
case <-to.C:
t.Fatal("never returned")
}
})
t.Run("external cancellation", func(t *testing.T) {
to := time.NewTimer(time.Second)
defer to.Stop()
done1, pr1 := buildPause()
_, pr2 := buildPause()
ctx, cancel := context.WithCancel(context.Background())
errCh := make(chan error)
go func() { errCh <- MultiPauseResume(pr1, pr2).Pause(ctx) }()
done1(errors.New("okay"))
cancel()
select {
case err := <-errCh:
if err == nil {
t.Error("got nil; want err")
}
case <-to.C:
t.Fatal("never returned")
}
})
}
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