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tasks_test.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package component
import (
"context"
"sync"
"testing"
"time"
"github.com/smartystreets/assertions"
"go.thethings.network/lorawan-stack/pkg/errors"
"go.thethings.network/lorawan-stack/pkg/util/test"
"go.thethings.network/lorawan-stack/pkg/util/test/assertions/should"
)
func init() {
defaultTaskBackoff = [...]time.Duration{
1 * test.Delay,
2 * test.Delay,
3 * test.Delay,
4 * test.Delay,
}
}
func TestTasks(t *testing.T) {
a := assertions.New(t)
ctx := test.Context()
c, err := New(test.GetLogger(t), &Config{})
a.So(err, should.BeNil)
// Register a one-off task.
oneOffWg := sync.WaitGroup{}
oneOffWg.Add(1)
c.RegisterTask(ctx, "one_off", func(_ context.Context) error {
oneOffWg.Done()
return nil
}, TaskRestartNever)
// Register an always restarting task.
restartingWg := sync.WaitGroup{}
restartingWg.Add(5)
i := 0
c.RegisterTask(ctx, "restarts", func(_ context.Context) error {
i++
if i <= 5 {
restartingWg.Done()
}
return nil
}, TaskRestartAlways)
// Register a task that restarts on failure.
failingWg := sync.WaitGroup{}
failingWg.Add(1)
j := 0
c.RegisterTask(ctx, "restarts_on_failure", func(_ context.Context) error {
j++
if j < 5 {
return errors.New("failed")
}
failingWg.Done()
return nil
}, TaskRestartOnFailure)
// Wait for all invocations.
test.Must(nil, c.Start())
defer c.Close()
oneOffWg.Wait()
restartingWg.Wait()
failingWg.Wait()
}