added 'realistic' test for events

src/pipeline/events.rs

@@ -119,3 +119,112 @@ impl<'a> EventHandler for EventQueue<'a> {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use bevy::time::TimePlugin;
+    use systems::tests::HeadlessRenderPlugin;
+
+    use crate::{plugin::*, prelude::*};
+
+    #[cfg(feature = "dim3")]
+    fn cuboid(hx: Real, hy: Real, hz: Real) -> Collider {
+        Collider::cuboid(hx, hy, hz)
+    }
+    #[cfg(feature = "dim2")]
+    fn cuboid(hx: Real, hy: Real, _hz: Real) -> Collider {
+        Collider::cuboid(hx, hy)
+    }
+
+    #[test]
+    pub fn events_received() {
+        return main();
+
+        use bevy::prelude::*;
+
+        #[derive(Resource, Reflect)]
+        pub struct EventsSaver<E: Event> {
+            pub events: Vec<E>,
+        }
+        impl<E: Event> Default for EventsSaver<E> {
+            fn default() -> Self {
+                Self {
+                    events: Default::default(),
+                }
+            }
+        }
+        pub fn save_events<E: Event + Clone>(
+            mut events: EventReader<E>,
+            mut saver: ResMut<EventsSaver<E>>,
+        ) {
+            for event in events.read() {
+                saver.events.push(event.clone());
+            }
+        }
+        fn run_test(app: &mut App) {
+            app.add_systems(PostUpdate, save_events::<CollisionEvent>)
+                .add_systems(PostUpdate, save_events::<ContactForceEvent>)
+                .init_resource::<EventsSaver<CollisionEvent>>()
+                .init_resource::<EventsSaver<ContactForceEvent>>();
+            // while app.plugins_state() == bevy::app::PluginsState::Adding {
+            //     #[cfg(not(target_arch = "wasm32"))]
+            //     bevy::tasks::tick_global_task_pools_on_main_thread();
+            // }
+            // app.finish();
+            // app.cleanup();
+            let mut time = app.world_mut().get_resource_mut::<Time<Virtual>>().unwrap();
+            time.set_relative_speed(1000f32);
+            for _ in 0..300 {
+                // FIXME: advance by set durations to avoid being at the mercy of the CPU.
+                app.update();
+            }
+            let saved_collisions = app
+                .world()
+                .get_resource::<EventsSaver<CollisionEvent>>()
+                .unwrap();
+            assert!(saved_collisions.events.len() > 0);
+            let saved_contact_forces = app
+                .world()
+                .get_resource::<EventsSaver<CollisionEvent>>()
+                .unwrap();
+            assert!(saved_contact_forces.events.len() > 0);
+        }
+
+        /// Adapted from events example
+        fn main() {
+            let mut app = App::new();
+            app.add_plugins((
+                HeadlessRenderPlugin,
+                TransformPlugin,
+                TimePlugin,
+                RapierPhysicsPlugin::<NoUserData>::default(),
+            ))
+            .add_systems(Startup, setup_physics);
+            run_test(&mut app);
+        }
+
+        pub fn setup_physics(mut commands: Commands) {
+            /*
+             * Ground
+             */
+            commands.spawn((
+                TransformBundle::from(Transform::from_xyz(0.0, -1.2, 0.0)),
+                cuboid(4.0, 1.0, 1.0),
+            ));
+
+            commands.spawn((
+                TransformBundle::from(Transform::from_xyz(0.0, 5.0, 0.0)),
+                cuboid(4.0, 1.5, 1.0),
+                Sensor,
+            ));
+
+            commands.spawn((
+                TransformBundle::from(Transform::from_xyz(0.0, 13.0, 0.0)),
+                RigidBody::Dynamic,
+                cuboid(0.5, 0.5, 0.5),
+                ActiveEvents::COLLISION_EVENTS,
+                ContactForceEventThreshold(30.0),
+            ));
+        }
+    }
+}

src/plugin/systems/mod.rs

@@ -61,7 +61,7 @@ pub fn step_simulation<Hooks>(
 }
 
 #[cfg(test)]
-mod tests {
+pub mod tests {
     use bevy::{
         asset::AssetPlugin,
         ecs::event::Events,