Heimdl and GitHub Copilot

Copilot reviews the change, Heimdl checks the tests behind it

Two different questions

GitHub Copilot asks

“Does this change look right?”

Heimdl asks

“If this change were wrong, would a test fail?”

Across the 1 pull request GitHub Copilot reviewed, the tests missed 81% of the changes

Running both

Keep GitHub Copilot for review, add Heimdl for proof your tests hold the change

Other comparisons

Missed, the share of changes on the pull requests a reviewer reviewed that no test caught, survived plus uncovered

From Heimdl’s published audits of public pull requests, a reviewer is listed where it commented on the pull request