Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52777
Changelog: [internal]
This significantly speeds up test execution in Fantom (around 2x in OSS and 6x at Meta) by starting a Metro server before all tests runs and reusing it across all tests to build test bundles, instead of spinning up a new Metro instance every time we run each test.
The architecture change (also considering the previous change in buck prebuilds) looks like this:
{F1980689532}
This is how is impacts execution times (compared to the baseline):
* OSS
* Before: 62s {F1980564286}
* After: 30s (**2x faster**) {F1980564265}
Reviewed By: andrewdacenko
Differential Revision: D78741903
fbshipit-source-id: b209f88925e49cc2a2067e8df9b7fa9a29b4c8d2
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52222
Changelog: [Internal]
Introduce environment option to force usage of OSS fantom test runner.
If env is not set - check for BUCK file in tester which is checked in for FB but not for OSS.
Reviewed By: rubennorte
Differential Revision: D77160761
fbshipit-source-id: 1701ff140ff2be1bbeacfb4305e9f89089cacb42
Rubén Norte
Andrew Datsenko