This is similar to #9531.

It is not safe to assign a bunch of setters in the passed object. They may throw or they may have side effects. This isn't theoretical because we may add setters like this to React.

Example: https://repl.it/repls/HuskyCandidConfiguration

test('setter object comparison', () => {
  expect({
    get a() {
      return {};
    },
    set a(value) {
      throw new Error('noo');
    },
    b: {},
  }).toEqual({ 
    a: {},
   });
});

This used to work fine in 24: https://repl.it/repls/AllMediumorchidDeals

This regression is currently blocking upgrading React to Jest 25.