anchor.diff:    test('Initial values', () {
       setup();
       expect(debt1.label, 'Test1');
  -    expect(debt1.balance, 2500);
  +    expect(debt1.balance, 2500.0);
       expect(debt1.rate, .1);
  -    expect(debt1.minPayment, 25);
  +    expect(debt1.minPayment, 25.0);
     });
     
     group('Label', () {
  
positive.code:   group('Min payment', () {
      test('Reassignment', () {
        setup();
        expect(debt1.minPayment, 25);
        debt1.minPayment = 135;
        expect(debt1.minPayment, 135);
      });
      
      test('Negative', () {
  
negative.code:   group('Balance', () {
      test('Reassignment', () {
        setup();
        expect(debt1.balance, 2500.0);
        debt1.balance = 1000.0;
        expect(debt1.balance, 1000.0);
      });
      
      test('Negative', () {
        setup();
        expect(() { debt1.balance = -1.0; }, throwsException);
      });
    });
    
  