Running karma on jenkins end up on DISCONNECTED state

[IoanaIvanova]

Hello,

I have a problem running karma inside a jenkins docker container with chrome headless configuration.
It just disconnect before the tests executed successfully. But this is not happening when I run the same karma command locally on my Mac.
This is the error that is printed:

15:42:19 29 07 2019 12:42:19.384:DEBUG [HeadlessChrome 75.0.3770 (Linux 0.0.0)]: Disconnected during run, waiting 2000ms for reconnecting.
15:42:19 29 07 2019 12:42:19.384:DEBUG [HeadlessChrome 75.0.3770 (Linux 0.0.0)]: EXECUTING -> EXECUTING_DISCONNECTED
15:42:21 29 07 2019 12:42:21.386:WARN [HeadlessChrome 75.0.3770 (Linux 0.0.0)]: Disconnected (1 times)reconnect failed before timeout of 2000ms (ping timeout)
15:42:21 29 07 2019 12:42:21.386:DEBUG [HeadlessChrome 75.0.3770 (Linux 0.0.0)]: EXECUTING_DISCONNECTED -> DISCONNECTED

Can you tell me is there a fix or workaround for this ?

Because I saw that many issues are created for this problem in different karma-runner projects for example this one

Best Regards,
Yoana

[matz3]

As the mentioned issue is not using the karma-ui5 plugin but describing the same symptom, I don't think that the problem is related to this project and I don't see how it can be addressed in here, sorry.

[IoanaIvanova]

But we actually use karma-ui5 plugin for executing the tests. But I'm not sure if this is an issue related to the karma itself or to the karma-ui5 plugin.

@matz3 do you think that it is related to the karma itself or to something else?

These are the version of karma, karma-ui5 and karma-chrome-launcher that we are using:

    "karma-ui5": "^1.0.1",
    "karma": "^4.1.0",
    "karma-chrome-launcher": "^2.2.0",

[matz3]

Yes, I think it is not related to karma-ui5. I rather think this is related to the Docker environment and Chrome.