Added test for run queue.

dynatos-reactive/tests/run-queue.rs

@@ -0,0 +1,44 @@
+//! Run queue tests
+
+// Features
+#![feature(thread_local, proc_macro_hygiene, stmt_expr_attributes)]
+
+// Imports
+use {
+	core::cell::RefCell,
+	dynatos_reactive::{Derived, Effect, Signal, SignalBorrowMut, SignalGet},
+	zutil_cloned::cloned,
+};
+
+/// Ensures that the run queue is breadth-first
+#[test]
+fn breadth_first() {
+	let a = Signal::new(5);
+	let b = Signal::new(6);
+
+	#[thread_local]
+	static ORDER: RefCell<Vec<&'static str>> = RefCell::new(vec![]);
+
+	#[cloned(a)]
+	let a2 = Derived::new(move || {
+		ORDER.borrow_mut().push("a2");
+		a.get() + 1
+	});
+	#[cloned(b)]
+	let b2 = Derived::new(move || {
+		ORDER.borrow_mut().push("b2");
+		b.get() + 1
+	});
+
+	let _c = Effect::new(move || {
+		ORDER.borrow_mut().push("c");
+		_ = (a2.get(), b2.get());
+	});
+
+	let a = a.borrow_mut();
+	let b = b.borrow_mut();
+
+	ORDER.borrow_mut().clear();
+	drop((a, b));
+	assert_eq!(*ORDER.borrow(), ["a2", "b2", "c"], "Effect was run with wrong order");
+}