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🌱 MD reconciler: improve integration test #7596

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sbueringer
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@sbueringer sbueringer commented Nov 23, 2022

Signed-off-by: Stefan Büringer buringerst@vmware.com

What this PR does / why we need it:
Extracted from #7591 to make clear that the unit test validation was broken before any prod code changes.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Signed-off-by: Stefan Büringer buringerst@vmware.com
@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Nov 23, 2022
@@ -340,8 +341,8 @@ func TestMachineDeploymentReconciler(t *testing.T) {
// expect old MachineSets with old labels to be deleted
//
oldLabels := deployment.Spec.Selector.MatchLabels
oldLabels[clusterv1.MachineDeploymentLabelName] = deployment.Name
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oldLabels is only used to validate somewhere below that all MachineSets with the oldLabels have been deleted.

But those MachineSets will never have the MachineDeploymentLabelNameset with the current code.

So this PR ensures we have a unique set of labels in selector which are then changed to other labels with no overlap.

This way we can clearly verify that the old MachineSets have been deleted.

The test did not fail as:

  • oldLabels never matched MachineSets vs. (current test)
  • oldLabels don't match a MachineSet after MachineSet deletion (test after this PR)
    are both accepted.

Please note: #7591 will ensure that MachineDeploymentLabelName will be set on all MachineSets, but this would break the current validation as the oldLabels would match old and new MachineSets.

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/assign @fabriziopandini

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Thanks for catching this!
/lgtm
/approve

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Nov 23, 2022
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fabriziopandini

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Nov 23, 2022
@k8s-ci-robot k8s-ci-robot merged commit 3dd7f30 into kubernetes-sigs:main Nov 23, 2022
@k8s-ci-robot k8s-ci-robot added this to the v1.4 milestone Nov 23, 2022
@sbueringer sbueringer deleted the pr-imprpove-MD-reconciler-test branch November 23, 2022 10:44
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/cherry-pick release-1.3

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@sbueringer: new pull request created: #7602

In response to this:

/cherry-pick release-1.3

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

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/cherry-pick release-1.2

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@sbueringer: new pull request created: #7607

In response to this:

/cherry-pick release-1.2

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