expect_snapshot_r_process: testthat snapshot test with asciicast

In r-lib/asciicast: Create 'Ascii' Screen Casts from R Scripts

testthat snapshot test with asciicast

Description

This function is very similar to testthat::expect_snapshot_output(), but it runs the code in an asciciast subprocess, using record_output().

Usage

expect_snapshot_r_process(
  ...,
  interactive = TRUE,
  echo = TRUE,
  startup = NULL,
  transform = NULL,
  variant = NULL
)

Arguments

...	Code to run (unnamed arguments) and arguments to pass to record_output() (named arguments). The code is evaluated in a new asciicast subprocess. Their output is returned and used in a testthat snapshot test.
interactive	Whether to use an interactive R process to evaluate the code.
echo	Whether to echo the code in the subprocess before running it.
startup	Expression to evaluate in the subprocess before recording the snapshot. By default it loads and attaches the calling package, including its internal functions.
transform	Passed to testthat::expect_snapshot().
variant	Passed to testthat::expect_snapshot().

Details

THe Code part of the snapshot is always the same, but the Output part shows the code, assuming echo = TRUE (the default).

Examples

Sys.getpid()
testthat::local_edition(3)
expect_snapshot_r_process(Sys.getpid())

r-lib/asciicast documentation built on Jan. 31, 2024, 1:19 p.m.