anchor.diff:      }
     }
   
  -  static testMain() {
  +  static runOne() {
       var a = 22;
       var b = 4;
       // Smi & smi.
  
positive.code:     Expect.equals(2.0, 10 / 5);
      Expect.equals(2, a % b);
      Expect.equals(2, a.remainder(b));
      a = 22;
      b = 4.0;
      // Smi & double.
  
negative.code:     Expect.equals(false, (3).hashCode() == (1).hashCode());
      Expect.equals(true, (10).hashCode() == (10).hashCode());
    }
  
    static testMain() {
      for (int i = 0; i < 1500; i++) {
        runOne();
      }
    }
  }
  
  main() {
  