130 lines
3.4 KiB
Go
130 lines
3.4 KiB
Go
/*
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Copyright 2021 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 request
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import (
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"reflect"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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testclock "k8s.io/utils/clock/testing"
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)
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func TestStorageObjectCountTracker(t *testing.T) {
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tests := []struct {
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name string
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lastUpdated time.Duration
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count int64
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errExpected error
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countExpected int64
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}{
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{
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name: "object count not tracked for given resource",
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count: -2,
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errExpected: ObjectCountNotFoundErr,
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},
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{
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name: "transient failure",
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count: -1,
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errExpected: ObjectCountNotFoundErr,
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},
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{
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name: "object count is zero",
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count: 0,
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countExpected: 0,
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errExpected: nil,
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},
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{
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name: "object count is more than zero",
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count: 799,
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countExpected: 799,
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errExpected: nil,
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},
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{
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name: "object count stale",
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count: 799,
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countExpected: 799,
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lastUpdated: staleTolerationThreshold + time.Millisecond,
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errExpected: ObjectCountStaleErr,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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fakeClock := &testclock.FakePassiveClock{}
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tracker := &objectCountTracker{
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clock: fakeClock,
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counts: map[string]*timestampedCount{},
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}
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key := "foo.bar.resource"
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now := time.Now()
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fakeClock.SetTime(now.Add(-test.lastUpdated))
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tracker.Set(key, test.count)
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fakeClock.SetTime(now)
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countGot, err := tracker.Get(key)
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if test.errExpected != err {
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t.Errorf("Expected error: %v, but got: %v", test.errExpected, err)
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}
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if test.countExpected != countGot {
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t.Errorf("Expected count: %d, but got: %d", test.countExpected, countGot)
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}
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if test.count <= -1 && len(tracker.counts) > 0 {
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t.Errorf("Expected the cache to be empty, but got: %d", len(tracker.counts))
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}
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})
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}
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}
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func TestStorageObjectCountTrackerWithPrune(t *testing.T) {
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fakeClock := &testclock.FakePassiveClock{}
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tracker := &objectCountTracker{
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clock: fakeClock,
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counts: map[string]*timestampedCount{},
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}
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now := time.Now()
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fakeClock.SetTime(now.Add(-61 * time.Minute))
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tracker.Set("k1", 61)
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fakeClock.SetTime(now.Add(-60 * time.Minute))
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tracker.Set("k2", 60)
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// we are going to prune keys that are stale for >= 1h
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// so the above keys are expected to be pruned and the
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// key below should not be pruned.
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mostRecent := now.Add(-59 * time.Minute)
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fakeClock.SetTime(mostRecent)
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tracker.Set("k3", 59)
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expected := map[string]*timestampedCount{
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"k3": {
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count: 59,
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lastUpdatedAt: mostRecent,
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},
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}
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fakeClock.SetTime(now)
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if err := tracker.prune(time.Hour); err != nil {
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t.Fatalf("Expected no error, but got: %v", err)
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}
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// we expect only one entry in the map, so DeepEqual should work.
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if !reflect.DeepEqual(expected, tracker.counts) {
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t.Errorf("Expected prune to remove stale entries - diff: %s", cmp.Diff(expected, tracker.counts))
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}
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}
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