error with shinytest2::AppDriver$new

[NikolozAz]

Hello shiny devs,

i am trying to get started with the shinytest2 package and encounter an errror already when running shinytest2::record_test or shinytest2::AppDriver$new(getwd()). I tried to run those codes also with the simple shiny app from your getting started with shinytest2 webpage (https://rstudio.github.io/shinytest2/articles/shinytest2.html). This error looks as follows.

As a remark i wanted to add, that when i run for example shinytest2::record_test all my opened chrome pages are reloaded.
Has anyone the same issue? Thank you in advance!

[schloerke]

There is error output in your screenshot:

Cannot find an available port. Please try again.

Are you able to view the R home page with a chromote session?

library(chromote)

b <- ChromoteSession$new()
b$Page$navigate("https://www.r-project.org/")
b$view()

[NikolozAz]

Hi, thank you for your response. No i am not able to do it either. Then it's a chromote problem right?

[NikolozAz]

It reloads all the pages as beforehand...

[schloerke]

Yes, the failure is not related to shinytest2. (But, we can finish our conversation here.)

I don't understand why your machine can not open a port. Are you able to successfully run this code?

 httpuv::randomPort()

[NikolozAz]

Okay, thanks. I was able to run that code successfully. It returns 9899 as a value.

[schloerke]

Hmmmmm. I don't know then. Maybe updating your Google Chrome installation will fix it?

Once you're able to successfully run chromote:::launch_chrome(), then then the original {shinytest2} problem should be fixed.

[NikolozAz]

Okay, thank you. I will try it.

[NikolozAz]

It turns out that as that function of chromote package (chromote:::launch_chrome()) is internal function, the security system of a company doesn't allow it to run. So for now, i won't be able to use it. But nice to know it and thank you for your help!