Previously, we passed nil to the anonymous ID parameter in the ExPlat configuration and we observed a high crossover rate where the same logged-in user has been assigned to more than one variation for the same A/A test. From @aaronyan's investigation pbxNRc-1S0-p2#comment-3688, the nil anonymous ID might have caused a high crossover rate because the anonymous ID is prioritized over the authenticated user ID when assigning a variation for an A/B experiment.
Once assignment requests include the anon_id, then I think we should see a lot less crossovers! The anon_id will be given priority on the assignment side, so the user will be assigned the same variation that was originally given to them while they were anonymous.
Therefore, this PR added a new parameter anonymousID to switchToAuthenticatedUser where wpComToken is expected for ExPlat configuration. This was added as a new method so that it doesn't affect any other apps.
For https://github.com/woocommerce/woocommerce-ios/issues/7435
Description
Previously, we passed
nilto the anonymous ID parameter in the ExPlat configuration and we observed a high crossover rate where the same logged-in user has been assigned to more than one variation for the same A/A test. From @aaronyan's investigation pbxNRc-1S0-p2#comment-3688, thenilanonymous ID might have caused a high crossover rate because the anonymous ID is prioritized over the authenticated user ID when assigning a variation for an A/B experiment.Therefore, this PR added a new parameter
anonymousIDtoswitchToAuthenticatedUserwherewpComTokenis expected for ExPlat configuration. This was added as a new method so that it doesn't affect any other apps.Testing instructions
Please check the testing steps in https://github.com/woocommerce/woocommerce-ios/pull/7574.