Fixed broken tests; exported ExclusiveSystem trait in prelude

Author: alice-i-cecile

crates/bevy_ecs/src/lib.rs

@@ -29,8 +29,8 @@ pub mod prelude {
             Schedule, Stage, StageLabel, State, SystemLabel, SystemSet, SystemStage,
         },
         system::{
-            Commands, In, IntoChainSystem, IntoExclusiveSystem, IntoSystem, Local, NonSend,
-            NonSendMut, Query, QuerySet, RemovedComponents, Res, ResMut, System,
+            Commands, ExclusiveSystem, In, IntoChainSystem, IntoExclusiveSystem, IntoSystem, Local,
+            NonSend, NonSendMut, Query, QuerySet, RemovedComponents, Res, ResMut, System,
         },
         world::{FromWorld, Mut, World},
     };

crates/bevy_ecs/src/system/exclusive_system.rs

@@ -31,7 +31,7 @@ pub trait ExclusiveSystem: Send + Sync + 'static {
     /// }
     ///
     /// world.insert_resource::<Counter>(Counter(0));
-    /// count_up.exclusive_system().run_direct(world);
+    /// count_up.exclusive_system().run_direct(&mut world);
     /// let counter = world.get_resource::<Counter>().unwrap();
     /// assert_eq!(counter.0, 1);
     ///```
@@ -77,6 +77,11 @@ impl ExclusiveSystem for ExclusiveSystemFn {
         world.last_change_tick = saved_last_tick;
     }
 
+    fn run_direct(&mut self, world: &mut World) {
+        self.initialize(world);
+        self.run(world);
+    }
+
     fn initialize(&mut self, _: &mut World) {}
 
     fn check_change_tick(&mut self, change_tick: u32) {

crates/bevy_ecs/src/system/system.rs

@@ -88,7 +88,7 @@ pub trait System: Send + Sync + 'static {
     /// }
     ///
     /// world.insert_resource::<Counter>(Counter(0));
-    /// count_up.run_direct((), world);
+    /// count_up.system().run_direct((), &mut world);
     /// let counter = world.get_resource::<Counter>().unwrap();
     /// assert_eq!(counter.0, 1);
     /// ```