1 files changed, 36 insertions, 0 deletions
diff --git a/ecs/tests/phase.rs b/ecs/tests/phase.rs
new file mode 100644
index 0000000..af2646b
--- /dev/null
+++ b/ecs/tests/phase.rs
@@ -0,0 +1,36 @@
+use std::sync::atomic::{AtomicUsize, Ordering};
+
+use ecs::component::local::Local;
+use ecs::phase::UPDATE;
+use ecs::system::Into;
+use ecs::system::initializable::Initializable;
+use ecs::{Component, World};
+
+#[derive(Component)]
+struct Thing;
+
+#[test]
+fn system_run_order_correct_when_one_has_local_comp()
+{
+    static COUNTER: AtomicUsize = AtomicUsize::new(0);
+
+    fn first_system(_thing: Local<Thing>)
+    {
+        assert_eq!(COUNTER.fetch_add(1, Ordering::Relaxed), 0);
+    }
+
+    fn second_system()
+    {
+        assert_eq!(COUNTER.fetch_add(1, Ordering::Relaxed), 1);
+    }
+
+    let mut world = World::new();
+
+    world.register_system(*UPDATE, first_system.into_system().initialize((Thing,)));
+
+    world.register_system(*UPDATE, second_system);
+
+    world.step();
+
+    assert_eq!(COUNTER.load(Ordering::Relaxed), 2);
+}