Yihui Xie • 5/15/2026

Converting testthat Tests to testit

This article provides a practical guide for migrating R package tests from testthat to testit, a 13-year-old zero-dependency testing framework that recently reached v1.0. It covers file structure differences, conditional test execution, core assertion patterns, and a cheat sheet for translating common expect_* functions to testit's assert() syntax. Aimed at R developers considering a switch to a simpler testing approach.

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#unit testing #R #R Package Development