Failing Jest Tests: Cannot read properties of null (reading 'createEvent')

[spalger]

We've seen a number of failures in CI which seem to be caused by the x-pack/plugins/triggers_actions_ui/public/application/components/builtin_action_types/jira/jira_params.test.tsx suite.

PASS  x-pack/plugins/triggers_actions_ui/public/application/components/builtin_action_types/jira/jira_params.test.tsx (7.015 s)
/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom.development.js:154
      var evt = document.createEvent('Event'); // Keeps track of whether the user-provided callback threw an error. We
                         ^

TypeError: Cannot read properties of null (reading 'createEvent')
    at Object.invokeGuardedCallbackDev (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom.development.js:154:26)
    at invokeGuardedCallback (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom.development.js:292:31)
    at flushPassiveEffectsImpl (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom.development.js:22853:9)
    at unstable_runWithPriority (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/scheduler/cjs/scheduler.development.js:653:12)
    at runWithPriority$1 (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom.development.js:11039:10)
    at flushPassiveEffects (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom.development.js:22820:12)
    at Object.<anonymous>.flushWork (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom-test-utils.development.js:876:10)
    at Immediate.<anonymous> (/var/lib/buildkite-agent/builds/kb-n2-4-spot-2c4ae8a62d3d0d45/elastic/kibana-on-merge/kibana/node_modules/react-dom/cjs/react-dom-test-utils.development.js:887:11)
    at processImmediate (node:internal/timers:466:21)
FAIL  x-pack/plugins/triggers_actions_ui/public/application/sections/rule_details/components/rule_event_log_list.test.tsx

Logs: https://storage.googleapis.com/ci-artifacts.kibana.dev/logs/0182ac03-39b9-47cd-8ff0-1ca609706fb3.html

it's unclear what event is triggering this, but it seems logical to me that an event is being triggered after jsdom is torn down after x-pack/plugins/triggers_actions_ui/public/application/components/builtin_action_types/jira/jira_params.test.tsx is "complete". Unfortunately, since this failure happens outside of a test we don't have good reporting on how long this has been happening or where exactly this occurs. What I do know is that it's failed on main twice today so it must be pretty commonly failing in PRs too.

Because of the lack of clarity in what test is causing the issue I've skipped the tests in the following files:

• x-pack/plugins/triggers_actions_ui/public/application/components/builtin_action_types/jira/jira_params.test.tsx
• x-pack/plugins/triggers_actions_ui/public/application/sections/rule_details/components/rule_event_log_list.test.tsx

Skipped:

• main: 0d77708

[elasticmachine]

Pinging @elastic/response-ops (Team:ResponseOps)

[spalger]

FYI, I feel like this is impacting many people now so I'm opening this up a bit. If my PR is accepted we might be able to unskip these tests without further changed. We'll still want to make sure they're not flaky before re-enabling them, but maybe our Cannot read properties of null (reading 'createEvent') nightmares can be quieted for a while.

[jonathan-buttner]

@spalger can you link to your PR?

[spalger]

Oops, meta issue for my investigations: #141477
pr: #141481

[cnasikas]

@jonathan-buttner @spalger I tried to improve the test (x-pack/plugins/triggers_actions_ui/public/application/components/builtin_action_types/jira/jira_params.test.tsx) in this PR #141574. I hope it will eliminate the errors. I run the test locally 1000 times without issues.

[bhavyarm]

@mikecote I removed 8.5.0 label. Could you please label this with its intended release? thanks very much!

[ersin-erdal]

Closing this in favor of #163668