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Stabilize ingressip controller unit test #20352

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ironcladlou
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@ironcladlou ironcladlou commented Jul 18, 2018

Eliminate flakes in the TestBasicControllerFlow test by polling fake action
state rather than relying on custom fake watch consumption; the event counts on
the watch are not deterministic, and so the previous assumption of two events
doesn't always hold and causes a deadlock in the test's custom controller
handler.

Refactor the test to remove unnecessary fake watch and controller setup; just
use the fake client and its built-in watch capabilities directly.

Add stronger update validity assertions.

/xref #20168
/xref this flake

/cc @openshift/sig-network-edge
/cc @smarterclayton

Eliminate flakes in the TestBasicControllerFlow test by polling fake action
state rather than relying on custom fake watch consumption; the event counts on
the watch are not deterministic, and so the previous assumption of two events
doesn't always hold and causes a deadlock in the test's custom controller
handler.

Refactor the test to remove unnecessary fake watch and controller setup; just
use the fake client and its built-in watch capabilities directly.
@openshift-ci-robot openshift-ci-robot added the size/L Denotes a PR that changes 100-499 lines, ignoring generated files. label Jul 18, 2018
@ironcladlou
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On master I can reproduce the flake with stress in 50 or even less runs; with this patch I haven't seen a failure in 3000 runs and counting.

@ironcladlou
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10k runs and no failures, so I think this is good assuming the assertions are valid (previously there weren't really any)

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/retest

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@smarterclayton
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/retest

@smarterclayton
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/test gcp

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/lgtm

@openshift-ci-robot openshift-ci-robot added the lgtm Indicates that a PR is ready to be merged. label Jul 18, 2018
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ironcladlou, pravisankar

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@openshift-ci-robot openshift-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jul 18, 2018
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/test gcp

@openshift-merge-robot openshift-merge-robot merged commit bee2556 into openshift:master Jul 18, 2018
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5 participants