ttdo 0.0.10 on CRAN: Small Extension
A new minor release of our ttdo package arrived on CRAN a few days ago. The ttdo package extends the excellent (and very minimal / zero depends) unit testing package tinytest by Mark van der Loo with the very clever and well-done diffobj package by Brodie Gaslam to give us test results with visual diffs (as shown in the screenshot below) which seemingly is so compelling an idea that it eventually got copied by another package which shall remain unnamed… And as of this release, we also support visual diffs as provided by tinysnapshot by Vincent Arel-Bundock.
This release chiefly adds support for visual diff plots. As we extend tinytest for use in the R autograder we maintain and deploy within the lovely PrairieLearn framework, we need to encode the diffplot that has been produced by the autograder (commonly in a separate Docker process) to communicate it back to the controlling (Docker also) instance of PrairieLearn. We also did the usual bits of package maintenance keeping badges, URLs, continuous integration and minor R coding standards current.
As usual, the NEWS entry follows.
Changes in ttdo version 0.0.10 (2025-01-21)
Regular packaging updates to badges and continuous integration setup
Add support for a 'visual difference' taking advantage of a tinysnapshot feature returning a
ttvd-typed resultAdded (versioned) dependency on tinysnapshot (to also get the plot 'style' enhancement in the most recent version) and base64enc
Return
ttdo-typed result if diffobj-printed result is returnedEnsure all package-documentation links in manual page have anchors to the package
Courtesy of my CRANberries, there is also a diffstat report for this release. For questions, suggestions, or issues please use the issue tracker at the GitHub repo.
This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. If you like this or other open-source work I do, you can now sponsor me at GitHub.
