slint/sixtyfps_compiler/tests/basic/animate.60

SuperSimple := Rectangle {

    animate x {
        duration: 1000ms;
    }

    animate x {
//          ^error{Duplicated animation}
        duration: 1000ms;
    }

    animate y {
        nonexistent: 42;
//      ^error{Unknown property nonexistent}
    }

    animate text {
//          ^error{'text' is not an animatable property}
    }
}