Watch and automatically run R tests — auto_test

Watches R files in the app directory and tests/testthat directory for changes. When code files in app change, all tests are rerun. When test files change, only the changed test file is rerun.

auto_test_r(reporter = NULL, filter = NULL, hash = TRUE)

Arguments

reporter: {testthat} reporter to use. If NULL, will use testthat::default_reporter() for tests when running all tests and testthat::default_compact_reporter() for single file tests. See {testthat} reporters for more details.
filter: filter passed to testthat::test_dir(). If not NULL, only tests with file names matching this regular expression will be executed. Matching is performed on the file name after it's stripped of "test-" and ".R". Does not affect the case when a test file is changed. In this case, this test file is rerun.
hash: Logical. Whether to use file hashing to detect changes. Default is TRUE. If FALSE, file modification times are used instead.

Value

None. This function is called for side effects.

Examples

if (interactive()) {
  # Watch files and automatically run tests when changes are detected
  auto_test_r()
}