Split CI test suites with historical timing data (beta)

Depot can now split a test suite across CI shards using durations from your earlier test reports. Give each shard the same candidate list, and Depot assigns a time-balanced, non-overlapping subset of candidates.

Test splitting builds on the test results beta and reads timing data from the same JUnit reports. No separate setup needed: depot tests run uploads a report on each run. Both are free to use while in beta.

The new depot tests run command runs your test command and uploads its JUnit reports in one step. Use it directly from your CI shell or with depot/tests-run-action. Configure a matrix or parallel CI steps and Depot balances candidates using their recorded durations. Use depot tests split when you only need a shard's split results and want to pass them to your test runner yourself.

New suites run without timing data, then become better balanced as reports accumulate.

Read the Split tests by timing guide for a complete matrix example.