CCDM: test SessionCloseLogoutIT fails in bootstrapping v15

There is an exception when running the test in TC that does not happen in local.

Caused by: java.lang.AssertionError: Received error message in browser log console right after opening the page, message: [2020-02-14T18:53:31+0000] [SEVERE] http://172.16.1.163:8888/view/VAADIN/build/vaadin-4-2ecfa5ca1a31d0bd1c7b.cache.js 0:8701 "Push connection using long-polling failed!"

It might be due to the @Push annotation that is in multiple test views (as shown below) instead of in an AppShell class, but needs further investigation.

[main] ERROR com.vaadin.flow.server.startup.VaadinAppShellInitializer -

Found app shell configuration annotations in non `AppShellConfigurator` classes.
Please create a custom class implementing `AppShellConfigurator` and move the following annotations to it:
    - @Push from com.vaadin.flow.uitest.ui.PushSettingsView
    - @Push from com.vaadin.flow.uitest.ui.LongPollingPushView
    - @Push from com.vaadin.flow.uitest.ui.PushLongPollingUpdateDivView
    - @Push from com.vaadin.flow.uitest.ui.LongPollingMultipleThreadsView
    - @Push from com.vaadin.flow.uitest.ui.SessionCloseLogoutView
    - @Push from com.vaadin.flow.uitest.ui.routing.PushLayout
    - @Push from com.vaadin.flow.uitest.ui.TrackMessageSizeView
    - @Push from com.vaadin.flow.uitest.ui.PushWSUpdateDivView

[denis-anisimov]

I’m going to enable the IT via workaround : ignore the error message in the console. The IT tests totally different thing. But this ticket:

• has to be fixed
• it should be done ASAP
• can’t be closed because test doesn’t fail: as I said I will change the IT so it doesn’t fail but this ticket describes a bug which is unrelated to the SessionCloseLogoutIT

[ZheSun88]

the issue is still going on and the related bug has been reported to atmosphere https://github.com/Atmosphere/atmosphere/issues/2444.