watch

character vector of paths to watch. Omit trailing backslash.

path

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.

callback

file pattern passed to <code><a rd-options="=dir" href="/link/dir()?package=testthat&version=2.2.1&to=%3Ddir" data-mini-rdoc="=dir::dir()">dir()</a></code>

pattern

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

hash

This is used to power the <code><a rd-options="=auto_test" href="/link/auto_test()?package=testthat&version=2.2.1&to=%3Dauto_test" data-mini-rdoc="=auto_test::auto_test()">auto_test()</a></code> and
<code><a rd-options="=auto_test_package" href="/link/auto_test_package()?package=testthat&version=2.2.1&to=%3Dauto_test_package" data-mini-rdoc="=auto_test_package::auto_test_package()">auto_test_package()</a></code> functions which are used to rerun tests
whenever source code changes.

internal

Software testing is important, but, in part because it is
frustrating and boring, many of us avoid it. 'testthat' is a testing framework
for R that is easy to learn and use, and integrates with your existing 'workflow'.

Hadley Wickham

testthat

Unit Testing for R

RStudio 

R Core team 

watch function

file pattern passed to <code><a rd-options='=dir' href='dir()'>dir()</a></code>

This is used to power the <code><a rd-options='=auto_test' href='auto_test()'>auto_test()</a></code> and
<code><a rd-options='=auto_test_package' href='auto_test_package()'>auto_test_package()</a></code> functions which are used to rerun tests
whenever source code changes.

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

Description

Usage

Arguments

Details