mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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97 lines
2.6 KiB
Go
97 lines
2.6 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cache
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import (
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"fmt"
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"testing"
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"time"
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"k8s.io/apimachinery/pkg/util/clock"
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expirationcache "k8s.io/client-go/tools/cache"
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)
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type testObject struct {
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key string
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val string
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}
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// A fake objectCache for unit test.
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func NewFakeObjectCache(f func() (interface{}, error), ttl time.Duration, clock clock.Clock) *ObjectCache {
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ttlPolicy := &expirationcache.TTLPolicy{Ttl: ttl, Clock: clock}
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deleteChan := make(chan string, 1)
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return &ObjectCache{
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updater: f,
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cache: expirationcache.NewFakeExpirationStore(stringKeyFunc, deleteChan, ttlPolicy, clock),
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}
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}
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func TestAddAndGet(t *testing.T) {
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testObj := testObject{
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key: "foo",
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val: "bar",
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}
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objectCache := NewFakeObjectCache(func() (interface{}, error) {
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return nil, fmt.Errorf("Unexpected Error: updater should never be called in this test")
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}, 1*time.Hour, clock.NewFakeClock(time.Now()))
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err := objectCache.Add(testObj.key, testObj.val)
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if err != nil {
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t.Errorf("Unable to add obj %#v by key: %s", testObj, testObj.key)
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}
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value, err := objectCache.Get(testObj.key)
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if err != nil {
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t.Errorf("Unable to get obj %#v by key: %s", testObj, testObj.key)
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}
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if value.(string) != testObj.val {
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t.Errorf("Expected to get cached value: %#v, but got: %s", testObj.val, value.(string))
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}
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}
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func TestExpirationBasic(t *testing.T) {
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unexpectedVal := "bar"
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expectedVal := "bar2"
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testObj := testObject{
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key: "foo",
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val: unexpectedVal,
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}
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fakeClock := clock.NewFakeClock(time.Now())
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objectCache := NewFakeObjectCache(func() (interface{}, error) {
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return expectedVal, nil
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}, 1*time.Second, fakeClock)
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err := objectCache.Add(testObj.key, testObj.val)
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if err != nil {
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t.Errorf("Unable to add obj %#v by key: %s", testObj, testObj.key)
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}
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// sleep 2s so cache should be expired.
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fakeClock.Sleep(2 * time.Second)
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value, err := objectCache.Get(testObj.key)
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if err != nil {
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t.Errorf("Unable to get obj %#v by key: %s", testObj, testObj.key)
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}
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if value.(string) != expectedVal {
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t.Errorf("Expected to get cached value: %#v, but got: %s", expectedVal, value.(string))
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}
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}
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