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deflake restart count assertions in in-place resize tests (#131055)

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Natasha Sarkar 2025-03-27 09:56:40 -05:00 committed by GitHub
parent 047e4c8e56
commit 83bb5d5705
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3 changed files with 27 additions and 6 deletions
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9
test/e2e/common/node/pod_resize.go
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@ -1200,13 +1200,14 @@ func doPodResizeTests() {
patchedPod, pErr = f.ClientSet.CoreV1().Pods(newPod.Namespace).Patch(ctx, newPod.Name,
types.StrategicMergePatchType, []byte(patchString), metav1.PatchOptions{}, "resize")
framework.ExpectNoError(pErr, fmt.Sprintf("failed to patch pod for %s", opStr))
expected := e2epod.UpdateExpectedContainerRestarts(ctx, patchedPod, expectedContainers)
ginkgo.By(fmt.Sprintf("verifying pod patched for %s", opStr))
e2epod.VerifyPodResources(patchedPod, expectedContainers)
e2epod.VerifyPodResources(patchedPod, expected)
ginkgo.By(fmt.Sprintf("waiting for %s to be actuated", opStr))
resizedPod := e2epod.WaitForPodResizeActuation(ctx, f, podClient, newPod, expectedContainers)
e2epod.ExpectPodResized(ctx, f, resizedPod, expectedContainers)
resizedPod := e2epod.WaitForPodResizeActuation(ctx, f, podClient, newPod, expected)
e2epod.ExpectPodResized(ctx, f, resizedPod, expected)
}
patchAndVerify(tc.patchString, tc.expected, "resize")
@ -1219,7 +1220,7 @@ func doPodResizeTests() {
gomega.Expect(c.Name).To(gomega.Equal(tc.expected[i].Name),
"test case containers & expectations should be in the same order")
// Resizes that trigger a restart should trigger a second restart when rolling back.
rollbackContainers[i].RestartCount = tc.expected[i].RestartCount * 2
rollbackContainers[i].RestartCount = tc.expected[i].RestartCount
}
rbPatchStr, err := e2epod.ResizeContainerPatch(tc.containers)

18
test/e2e/framework/pod/resize.go
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@ -505,6 +505,24 @@ func ResizeContainerPatch(containers []ResizableContainerInfo) (string, error) {
return string(patchBytes), nil
}
// UpdateExpectedContainerRestarts updates the RestartCounts in expectedContainers by
// adding them to the existing RestartCounts in the containerStatuses of the provided pod.
// This reduces the flakiness of the RestartCount assertions by grabbing the current
// restart count right before the resize operation, and verify the expected increment (0 or 1)
// rather than the absolute count.
func UpdateExpectedContainerRestarts(ctx context.Context, pod *v1.Pod, expectedContainers []ResizableContainerInfo) []ResizableContainerInfo {
initialRestarts := make(map[string]int32)
newExpectedContainers := []ResizableContainerInfo{}
for _, ctr := range pod.Status.ContainerStatuses {
initialRestarts[ctr.Name] = ctr.RestartCount
}
for i, ctr := range expectedContainers {
newExpectedContainers = append(newExpectedContainers, expectedContainers[i])
newExpectedContainers[i].RestartCount += initialRestarts[ctr.Name]
}
return newExpectedContainers
}
func formatErrors(err error) error {
// Put each error on a new line for readability.
var agg utilerrors.Aggregate

6
test/e2e/node/pod_resize.go
View File

@ -155,6 +155,7 @@ func doPodResizeAdmissionPluginsTests() {
patchedPod, pErr := f.ClientSet.CoreV1().Pods(newPods[0].Namespace).Patch(ctx, newPods[0].Name,
types.StrategicMergePatchType, []byte(patchString), metav1.PatchOptions{}, "resize")
framework.ExpectNoError(pErr, "failed to patch pod for resize")
expected = e2epod.UpdateExpectedContainerRestarts(ctx, patchedPod, expected)
ginkgo.By("verifying pod patched for resize within resource quota")
e2epod.VerifyPodResources(patchedPod, expected)
@ -405,8 +406,9 @@ func doPodResizeSchedulerTests(f *framework.Framework) {
ginkgo.By(fmt.Sprintf("TEST3: Verify pod '%s' is resized successfully after pod deletion '%s' and '%s", testPod1.Name, testPod2.Name, testPod3.Name))
expected := []e2epod.ResizableContainerInfo{
{
Name: "c1",
Resources: &e2epod.ContainerResources{CPUReq: testPod1CPUQuantity.String(), CPULim: testPod1CPUQuantity.String()},
Name: "c1",
Resources: &e2epod.ContainerResources{CPUReq: testPod1CPUQuantity.String(), CPULim: testPod1CPUQuantity.String()},
RestartCount: testPod1.Status.ContainerStatuses[0].RestartCount,
},
}
resizedPod := e2epod.WaitForPodResizeActuation(ctx, f, podClient, testPod1, expected)