Summary

Harness status: Error

Test named 'ServiceWorker#postMessage() from a prerendered page should be deferred until page activation.' specified 1 'cleanup' function, and 1 failed.
TypeError: Cannot read properties of undefined (reading 'unregister')
    at https://www1.wpt.live/speculation-rules/prerender/restriction-service-worker-postmessage.https.html:25:36
    at https://www1.wpt.live/resources/testharness.js:3069:34
    at forEach (https://www1.wpt.live/resources/testharness.js:4709:26)
    at Test.cleanup (https://www1.wpt.live/resources/testharness.js:3064:9)
    at Test.done (https://www1.wpt.live/resources/testharness.js:3028:14)
    at Test.step (https://www1.wpt.live/resources/testharness.js:2695:18)
    at https://www1.wpt.live/resources/testharness.js:2731:35

Found 1 tests

Details

ResultTest NameMessage
FailServiceWorker#postMessage() from a prerendered page should be deferred until page activation.promise_test: Unhandled rejection with value: object "TypeError: Cannot read properties of undefined (reading 'installing')"
Error
    at get_stack (https://www1.wpt.live/resources/testharness.js:4617:21)
    at new AssertionError (https://www1.wpt.live/resources/testharness.js:4610:22)
    at assert (https://www1.wpt.live/resources/testharness.js:4594:19)
    at Test.<anonymous> (https://www1.wpt.live/resources/testharness.js:764:29)
    at Test.step (https://www1.wpt.live/resources/testharness.js:2684:25)
    at https://www1.wpt.live/resources/testharness.js:2731:35
Asserts runNo asserts ran