The scaling on testing needs to be massive. 1 million tests per day would mean almost a year to screen the US population.
The test that will allow the start of opening things is the antibody test that shows if you had the disease, recovered, and hence should be immune.
Except there has been no conclusive finding that those who have recovered are immune or a determination for how long they would be immune.
Would be great if we could all wait until: a) everyone gets tested b) there is certainty that all those that have recovered can expect immunity for a substantial period (and there is antibody test to confirm asymptomatic cases who are now immune; and/or c) and there was a widely available vaccine. Don't think even the most cautious governors, will wait to that point to open things up.
Think its far more likely that there will be a graduated re-opening that is based upon a falling number of cases, an expectation that the health care system can handle small spikes in cases without shutting everything down, and continued, but reduced, social distancing rules. So, life will kind of return to normal in that offices and some retail will re-open, but mass gatherings will not happen, masks will be prevalent, and lots of things that we used to do often (going bars, restaurants, theaters, games, gyms) won't be available for a much longer period of time and won't come back for possibly years. Life will suck, but just not quite as badly as it sucks now.
High level sports that can rely on TV money (NFL, NBA, MLB, NHL, PGA, Tennis Majors, high level pro soccer) and have the resources to conduct vigorous testing and monitoring of athletes will return in fan free environments, but other sports that rely on ticket sales to survive and without the means to take reasonable steps to monitor the athletes (minor league baseball, minor league hockey, basketball) are screwed for a long time. Big time college sports will find a way to survive, but the number of sports sponsored by schools is going to take a big hit. Youth sports will be crippled for a long time as well, particularly, the big time travel events. Going to be weird.