Check if selenider can be used — selenider

Checks if selenider's dependencies are available, and that we are in an environment where it makes sense to open a selenider session.

skip_if_selenider_unavailable() skips a testthat test if selenider_available() returns FALSE.

Usage

selenider_available(
  session = c("chromote", "selenium", "rselenium"),
  online = TRUE
)

skip_if_selenider_unavailable(session = c("chromote", "selenium"))

Arguments

session: Which session we should check. "chromote" is used by default.
online: Whether we need to check for an internet connection.

Value

A boolean flag: TRUE or FALSE.

Details

Specifically, the following is checked:

The SELENIDER_AVAILABLE environment variable. Set this to "TRUE" or "FALSE" to override this function.
Whether we are on CRAN (using the NOT_CRAN environment variable). If we are, the function returns FALSE.
Whether an internet connection is available (using curl::nslookup()).

If session is "chromote", we also check:

Whether chromote is installed.
Whether chromote::find_chrome() does not error.

If session is "selenium", we check:

Whether selenium is installed.
Whether we can find a valid browser that is supported by RSelenium.

Examples

selenider_available()