App driver won't start during GitLab CI/CD job

[DivadNojnarg]

Error happens in the GitLab runner while trying to test a basic hello world app:

ℹ You can inspect the failed AppDriver object via `rlang::last_error()$app`
ℹ AppDriver logs:
{shinytest2} R info  07:31:41.41 Start AppDriver initialization
{shinytest2} R info  07:31:41.41 Starting Shiny app
{shinytest2} R info  07:31:45.26 Creating new chromote session
{shinytest2} R info  07:31:45.60 Error while initializing AppDriver:
                                 Failed to start chrome. Error: Failed to move to new namespace: PID namespaces supported, Network namespace supported, but failed: errno = Operation not permitted
                                 Failed to generate minidump.
{shiny}      R error ----------- Loading required package: shiny
{shiny}      R error -------
In addition: Warning message:
In readLines(p$get_error_file()) :
  incomplete final line found on '/tmp/RtmpOod8Dt/chrome-stderr-f12847a1cdf49.log'
> chromote:::find_chrome()
[1] "/usr/bin/google-chrome"

On our servers, we have to specify a couple of tags to the Chrome browser to make it start (especially --no-sandbox) properly for instance:

Running /usr/bin/google-chrome --no-first-run --headless \
   '--user-data-dir=/gitlab-runner/.local/share/********' \
   '--remote-debugging-port=9222' \
   '--proxy-server=http://******' \
   '--proxy-bypass-list=localhost;127.0.0.1;${NO_PROXY};******' \
   --no-sandbox --no-proxy-server '--enable-logging=stderr' '--v=1' \
   '--window-size=1920,1200'

This might be the issue but I don't see any way to pass them to the shinytest2::AppDriver$new method.

---

Session details:

sessionInfo()
R version 4.1.0 (2021-05-18)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.3 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.9.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base     

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.7            pillar_1.6.2          compiler_4.1.0       
 [4] later_1.3.0           shinytest2_0.0.0.9001 tools_4.1.0          
 [7] testthat_3.1.2        digest_0.6.27         jsonlite_1.7.2       
[10] lifecycle_1.0.0       tibble_3.1.3          checkmate_2.0.0      
[13] pkgconfig_2.0.3       rlang_0.4.11          shiny_1.6.0          
[16] cli_3.0.1             rstudioapi_0.13       xfun_0.25            
[19] pagedown_0.15         fastmap_1.1.0         withr_2.4.2          
[22] fs_1.5.0              vctrs_0.3.8           websocket_1.4.1      
[25] chromote_0.0.0.9003   R6_2.5.1              processx_3.5.2       
[28] fansi_0.5.0           callr_3.7.0           magrittr_2.0.1       
[31] backports_1.2.1       ps_1.6.0              promises_1.2.0.1     
[34] ellipsis_0.3.2        htmltools_0.5.1.1     mime_0.11            
[37] xtable_1.8-4          renv_0.14.0           httpuv_1.6.5         
[40] utf8_1.2.2            crayon_1.4.1          brio_1.1.2 

[DivadNojnarg]

I was able to fix it with:

chromote::set_chrome_args(
  c(
    chromote::default_chrome_args(),
    "--no-sandbox", # does not run without
    "--no-proxy-server", # for percs
    "--window-size=1920,1200", # to get proper sidebar layout (ava2
    "--remote-debugging-port=9222"
  )
)

I think many people will forget this. Is is worth adding a note in the doc? I am not sure wether everyone will look at the {chromote} doc when using {shinytest2}. I am curious about your thoughts @schloerke

[schloerke]

It is interesting to me that --no-sandbox is not there. {chromote}'s default chromote args has logic to return --no-sandbox if in CI.

is_inside_ci <- function() {
  !identical(Sys.getenv("CI", unset = ""), "")
}

GitLab has this variable set as in docs: https://docs.gitlab.com/ee/ci/variables/predefined_variables.html

I don't know why this logic isn't automatically working.

---

What is "--no-proxy-server", # for percs used for?

---

I believe the window size can/is being set via height,width args on init.

---

Do you have a specific reason for manually setting the debugging port?