The ensure package provides an addin for drafting testthat unit testing code using LLMs. Triggering the addin will open a corresponding test file and begin writing tests into it. The ensurer is familiar with testthat 3e as well as tidy style, and incorporates context from the rest of your R package to write concise and relevant tests.
Installation
You can install ensure like so:
pak::pak("simonpcouch/ensure")Then, make sure that you have an ANTHROPIC_API_KEY environment variable set, and you’re ready to go. If you’d like to use an LLM other than Anthropic’s Claude 3.5 Sonnet—like OpenAI’s ChatGPT or a local ollama model—to power the ensurer, see the ensurer() documentation.
The ensurer is interfaced with the via the RStudio addin “ensure: Test R code.” For easiest access, we recommend registering the ensure addin to a keyboard shortcut. In RStudio, navigate to Tools > Modify Keyboard Shortcuts > Search "ensure"—we suggest Ctrl+Alt+T (or Ctrl+Cmd+T on macOS). The ensurer is currently not available in Positron as Positron has yet to implement document ids that the package needs to toggle between source and test files.
Once those steps are completed, you’re ready to use the ensure addin with a keyboard shortcut.
