gravity-lang/test/unittest/closure_nested_scope.gravity

#unittest {
	name: "Closure captures nested scope correctly.";
	error: NONE;
	result: true;
};

func main() {
	var counter = 0;

	// Create a closure that captures and modifies outer variable
	var increment = func() {
		counter += 1;
		return counter;
	};

	var r1 = (increment() == 1);
	var r2 = (increment() == 2);
	var r3 = (increment() == 3);
	var r4 = (counter == 3);

	// Closure over loop variable
	var funcs = [];
	for (var i in 0...2) {
		var val = i;
		funcs.push(func() { return val; });
	}
	var r5 = (funcs[0]() == 0);
	var r6 = (funcs[2]() == 2);

	return r1 and r2 and r3 and r4 and r5 and r6;
}