{testthat} file loading

[schloerke]

Making an issue to consolidate conversation.

Bug

• Dev code is not loaded in background Shiny R session
• Unwanted as it requires package authors to install before testing

Approaches

• Use {future}
  • {future} does not capture logging very well. Requires the Shiny app to shut down to get the output logs
    • This is a deal breaker
  • {future} does do a good job of capturing the dev R code
• Use testthat code loading
  • Need to inspect testthat::test_local(load_package=)
    • Maybe a flag could be passed through to tell the Shiny R session to load code this way
    • When load_package="source", it eventually calls testthat:::test_files_setup_env() which calls a ramped up version of pkgload::load_all()

Resolution

Ideally, all labels with theme: testthat file loading could be resolved