TestCase := Rectangle {
    property<int32> a;
    property<int32> t1: 4 + 3 * 2 + 2 - 50 - 2;
    property<int32> t2: 500 / 2 * 30 - 1;
    property<int32> t3: a - (3 + 2 * (a + 2));
    property<int32> t4: 3 + - 5 - 8 - -9 * --- 120;

}
/*
```cpp
TestCase instance;
assert(instance.get_t1() == 4 + 3 * 2 + 2 - 50 - 2);
assert(instance.get_t2() == 500 / 2 * 30 - 1);
instance.set_a(42);
assert(instance.get_t3() == 42 - (3 + 2 * (42 + 2)));
assert(instance.get_t4() == 3 + - 5 - 8 - -9 * - - - 120);
```


```rust
let instance = TestCase::new();
let instance = instance.as_ref();
assert_eq!(instance.get_t1(), 4 + 3 * 2 + 2 - 50 - 2);
assert_eq!(instance.get_t2(), 500 / 2 * 30 - 1);
instance.set_a(42);
assert_eq!(instance.get_t3(), 42 - (3 + 2 * (42 + 2)));
assert_eq!(instance.get_t4(), 3 + - 5 - 8 - -9 * --- 120);
```

```js
var instance = new sixtyfps.TestCase({});
assert.equal(instance.t1, 4 + 3 * 2 + 2 - 50 - 2);
assert.equal(instance.t2, 500 / 2 * 30 - 1);
instance.a = 42;
assert.equal(instance.t3, 42 - (3 + 2 * (42 + 2)));
assert.equal(instance.t4, 3 + - 5 - 8 - -9 * - - - 120);
```
*/