Migrating to the Unified test runner

By default, all new test and plan runs are configured to use the Unified Runner for Chrome. However, your team may have existing plans that were originally created with the Legacy Runner.


Chrome Legacy Runner sunset

The Legacy Runner for Chrome was formally retired on February 1, 2023. All existing plans that were configured to use the Legacy Runner for Chrome automatically migrated to the Unified Runner.

Unified Runner for Firefox

The Unified Runner for Firefox is currently available as an early access program. You can opt into this setting on the Labs page: Settings > Labs. When the Unified Runner for Firefox is turned on, all tests and plans executed on Firefox start using the Unified Runner by default.

You may revert to using the Legacy runner for Firefox by clicking the “Use Legacy runner” checkbox, or by turning off the feature in the Labs page.