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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/expect.R
\name{expect_deprecated}
\alias{expect_deprecated}
\alias{expect_defunct}
\title{Does expression produce lifecycle warnings or errors?}
\usage{
expect_deprecated(expr, regexp = NULL, ...)
expect_defunct(expr)
}
\arguments{
\item{expr}{Expression that should produce a lifecycle warning or
error.}
\item{regexp}{Optional regular expression matched against the
expected warning message.}
\item{...}{
Arguments passed on to \code{\link[testthat:expect_match]{expect_match}}
\describe{
\item{\code{fixed}}{If \code{TRUE}, treats \code{regexp} as a string to be matched exactly
(not a regular expressions). Overrides \code{perl}.}
\item{\code{perl}}{logical. Should Perl-compatible regexps be used?}
}}
}
\description{
These functions are equivalent to \code{\link[testthat:expect_error]{testthat::expect_warning()}} and
\code{\link[testthat:expect_error]{testthat::expect_error()}} but check specifically for lifecycle
warnings or errors.
To test whether a deprecated feature still works without causing a
deprecation warning, set the \code{lifecycle_verbosity} option to
\code{"quiet"}.
\if{html}{\out{<div class="sourceCode">}}\preformatted{test_that("feature still works", \{
withr::local_options(lifecycle_verbosity = "quiet")
expect_true(my_deprecated_function())
\})
}\if{html}{\out{</div>}}
}
\details{
\code{expect_deprecated()} sets the \link[=verbosity]{lifecycle_verbosity}
option to \code{"warning"} to enforce deprecation warnings which are
otherwise only shown once every 8 hours.
}
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