Remove unnecessary reverse

crates/bevy_ui/src/update.rs

@@ -16,7 +16,6 @@ pub fn ui_z_system(
         .iter()
         .map(|e| (e, UI_BASE_DEPTH))
         .collect::<Vec<(Entity, f32)>>();
-    node_stack.reverse();
     while let Some((node, parent_global_z)) = node_stack.pop() {
         current_global_z += UI_Z_STEP;
         let local_z = current_global_z - parent_global_z;
@@ -58,7 +57,18 @@ mod tests {
         let mut commands = Commands::default();
         commands.set_entity_reserver(world.get_entity_reserver());
 
-        commands.spawn(node_with_transform("0"));
+        commands
+            .spawn(node_without_transform("0"))
+            .with_children(|parent| {
+                parent
+                    .spawn(node_with_transform("0-0"))
+                    .with_children(|_parent| ());
+                parent
+                    .spawn(node_with_transform("0-1"))
+                    .with_children(|parent| {
+                        parent.spawn(node_with_transform("0-1-0"));
+                    });
+            });
 
         commands
             .spawn(node_with_transform("1"))
@@ -83,19 +93,8 @@ mod tests {
                     });
                 parent.spawn(node_with_transform("1-3"));
             });
+        commands.spawn(node_with_transform("2"));
 
-        commands
-            .spawn(node_without_transform("2"))
-            .with_children(|parent| {
-                parent
-                    .spawn(node_with_transform("2-0"))
-                    .with_children(|_parent| ());
-                parent
-                    .spawn(node_with_transform("2-1"))
-                    .with_children(|parent| {
-                        parent.spawn(node_with_transform("2-1-0"));
-                    });
-            });
         commands.apply(&mut world, &mut resources);
 
         let mut schedule = Schedule::default();
@@ -110,23 +109,23 @@ mod tests {
             .collect::<Vec<(String, u32)>>();
         actual_result.sort_unstable_by_key(|(name, _)| name.clone());
         let expected_result = vec![
-            ("0".to_owned(), 1),     // total_depth 1
-            ("1".to_owned(), 2),     // total_depth 2
-            ("1-0".to_owned(), 1),   // total_depth 3
-            ("1-0-0".to_owned(), 1), // total_depth 4
-            // 1-0-1 has no transform   total_depth 5
-            ("1-0-2".to_owned(), 3), // total_depth 6
-            ("1-1".to_owned(), 5),   // total_depth 7
-            // 1-2 has no transform     total_depth 8
-            ("1-2-0".to_owned(), 1), // total_depth 9
-            ("1-2-1".to_owned(), 2), // total_depth 10
-            ("1-2-2".to_owned(), 3), // total_depth 11
-            ("1-2-3".to_owned(), 4), // total_depth 12
-            ("1-3".to_owned(), 11),  // total_depth 13
-            // 2 has no transform       total_depth 14
-            ("2-0".to_owned(), 1),   // total_depth 15
-            ("2-1".to_owned(), 2),   // total_depth 16
-            ("2-1-0".to_owned(), 1), // total_depth 17
+            // 0 has no transform       total_depth 1
+            ("0-0".to_owned(), 1),   // total_depth 2
+            ("0-1".to_owned(), 2),   // total_depth 3
+            ("0-1-0".to_owned(), 1), // total_depth 4
+            ("1".to_owned(), 5),     // total_depth 5
+            ("1-0".to_owned(), 1),   // total_depth 6
+            ("1-0-0".to_owned(), 1), // total_depth 7
+            // 1-0-1 has no transform   total_depth 8
+            ("1-0-2".to_owned(), 3), // total_depth 9
+            ("1-1".to_owned(), 5),   // total_depth 10
+            // 1-2 has no transform     total_depth 11
+            ("1-2-0".to_owned(), 1), // total_depth 12
+            ("1-2-1".to_owned(), 2), // total_depth 13
+            ("1-2-2".to_owned(), 3), // total_depth 14
+            ("1-2-3".to_owned(), 4), // total_depth 15
+            ("1-3".to_owned(), 11),  // total depth 16
+            ("2".to_owned(), 17),    // total_depth 17
         ];
         assert_eq!(actual_result, expected_result);
     }