Toy/test/functions.toy

//test function return
fn testFourtyTwo() {
	return 42;
}

assert testFourtyTwo() == 42, "function returns failed";


//test function parameters
fn identity(x) {
	return x;
}

assert identity("hello world") == "hello world", "identity function failed";


//test closures
fn make() {
	var counter = 0;

	fn count() {
		return ++counter;
	}

	return count;
}

var tally = make();

assert tally() == 1 && tally() == 2, "Closures failed";


//expressions as arguments
fn argFn() {
	return 42;
}

fn outerFn(val) {
	assert val == 42, "expression as argument failed";
}

outerFn(argFn());


print "All good";