mirror of https://github.com/k3s-io/k3s
94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
/*
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Copyright 2017 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 configuration
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import (
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"fmt"
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"math"
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"sync"
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"testing"
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"time"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/wait"
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)
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func TestTolerateBootstrapFailure(t *testing.T) {
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var fakeGetSucceed bool
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var fakeGetSucceedLock sync.RWMutex
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fakeGetFn := func() (runtime.Object, error) {
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fakeGetSucceedLock.RLock()
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defer fakeGetSucceedLock.RUnlock()
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if fakeGetSucceed {
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return nil, nil
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} else {
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return nil, fmt.Errorf("this error shouldn't be exposed to caller")
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}
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}
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poller := newPoller(fakeGetFn)
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poller.bootstrapGracePeriod = 100 * time.Second
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poller.bootstrapRetries = math.MaxInt32
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// set failureThreshold to 0 so that one single failure will set "ready" to false.
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poller.failureThreshold = 0
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stopCh := make(chan struct{})
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defer close(stopCh)
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go poller.Run(stopCh)
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go func() {
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// The test might have false negative, but won't be flaky
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timer := time.NewTimer(2 * time.Second)
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<-timer.C
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fakeGetSucceedLock.Lock()
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defer fakeGetSucceedLock.Unlock()
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fakeGetSucceed = true
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}()
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done := make(chan struct{})
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go func(t *testing.T) {
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_, err := poller.configuration()
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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close(done)
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}(t)
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<-done
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}
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func TestNotTolerateNonbootstrapFailure(t *testing.T) {
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fakeGetFn := func() (runtime.Object, error) {
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return nil, fmt.Errorf("this error should be exposed to caller")
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}
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poller := newPoller(fakeGetFn)
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poller.bootstrapGracePeriod = 1 * time.Second
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poller.interval = 1 * time.Millisecond
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stopCh := make(chan struct{})
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defer close(stopCh)
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go poller.Run(stopCh)
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// to kick the bootstrap timer
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go poller.configuration()
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wait.PollInfinite(1*time.Second, func() (bool, error) {
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poller.lock.Lock()
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defer poller.lock.Unlock()
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return poller.bootstrapped, nil
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})
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_, err := poller.configuration()
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if err == nil {
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t.Errorf("unexpected no error")
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}
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}
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