Profile a shiny app — profile_app • shinyValidator

Start Shiny + profvis in the background. Chrome connects to the app and then closes to interrupt profvis. The profile report is then saved and exported in the public folder needed for CI/CD.

Usage

profile_app(
  headless_actions = NULL,
  timeout = NULL,
  port = randomPort(max = 3500),
  ...
)

Arguments

headless_actions: Custom code passed as an expression to manipulate the app with headless web browser, for instance app$set_inputs(obs = 200); app$run_js('1+1');. See https://rstudio.github.io/shinytest2/reference/AppDriver.html to get all available methods. If NULL, the app will undergo a classic random Monkey test session, taking a screenshot right after loading and after the monkey test. We do not recommend running a monkey test if your app is pointing to a database, unless the pipeline CI/CD runs in a dedicated test environment.
timeout: Time to wait after starting the subprocess (s). Useful is you know how much time the app takes to load. Defaults to 10 seconds locally and 20 seconds on CI/CD.
port: Port to start the app, default to httpuv::randomPort().
...: Pass extra parameters to run_app_audit. This is useful if you work with packages like golem.

Value

Write a .Rprof file to be reused by CI/CD to publish the report on GitLab pages