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kube-arangodb/pkg/util/k8sutil/informers_test.go
2022-11-03 17:48:44 +01:00

93 lines
2 KiB
Go

//
// DISCLAIMER
//
// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
//
// 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.
//
// Copyright holder is ArangoDB GmbH, Cologne, Germany
//
package k8sutil
import (
"reflect"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/arangodb/kube-arangodb/pkg/util/tests"
"github.com/arangodb/kube-arangodb/pkg/util/timer"
)
type mockInformer struct {
delay time.Duration
done bool
}
func (m *mockInformer) WaitForCacheSync(stopCh <-chan struct{}) map[reflect.Type]bool {
defer func() {
m.done = true
}()
c := timer.After(m.delay)
select {
case <-c:
case <-stopCh:
}
return nil
}
func MockInformer(delay time.Duration) *mockInformer {
return &mockInformer{delay: delay}
}
func Test_WaitForInformers(t *testing.T) {
t.Run("Delayed Sync", func(t *testing.T) {
a := MockInformer(time.Second)
stop := make(chan struct{})
n := tests.DurationBetween()
WaitForInformers(stop, 5*time.Second, a)
n(t, time.Second, 0.1)
require.True(t, a.done)
})
t.Run("Instant Sync", func(t *testing.T) {
a := MockInformer(time.Millisecond)
stop := make(chan struct{})
n := tests.DurationBetween()
WaitForInformers(stop, 5*time.Second, a)
n(t, time.Millisecond, 5)
require.True(t, a.done)
})
t.Run("Timeout Sync", func(t *testing.T) {
a := MockInformer(10 * time.Second)
stop := make(chan struct{})
n := tests.DurationBetween()
WaitForInformers(stop, 5*time.Second, a)
n(t, 5*time.Second, 0.05)
require.False(t, a.done)
})
}