testthat (version 0.2)

watch: Watch a directory for changes (additions, deletions & modifications).

Description

Watch a directory for changes (additions, deletions & modifications).

Usage

watch(path, callback, pattern, hash=TRUE)

Arguments

path

character vector of paths to watch. Omit trailing backslash.

pattern

file pattern passed to dir

callback

function called everytime a change occurs. It should have three parameters: added, deleted, modified, and should return TRUE to keep watching, or FALSE to stop.

hash

hashes are more accurate at detecting changes, but are slower for large files. When FALSE, uses modification time stamps

Details

This is used to power the auto_test and link{auto_test_package} functions which are used to rerun tests whenever source code changes.

Use Ctrl + break (windows), Esc (mac gui) or Ctrl + C (command line) to stop the watcher.