Testing only helps if sensible and sustainable transmission control protocols are in place. Shelter-is-place is absolutely unsustainable, and wholesale testing

Testing only helps if sensible and sustainable transmission control protocols are in place. Shelter-is-place is absolutely unsustainable, and wholesale testing of the population is economically infeasible in a population the size of California. There have been successes with wholesale testing in towns in Italy but those populations are small enough to test while everyone is quarantined for a short period. Then when the quarantine ends the disease will spread anyway thanks to false negatives or new imports.