Add failing test coverage for save after safeties addition

osu.Game.Tests/Visual/Editing/TestSceneEditorBeatmapCreation.cs

@@ -109,6 +109,7 @@ namespace osu.Game.Tests.Visual.Editing
                        && set != null
                        && set.PerformRead(s => s.Beatmaps.Single().ID == beatmap.ID);
             });
+            AddAssert("can save again", () => Editor.Save());
 
             AddStep("create new difficulty", () => Editor.CreateNewDifficulty(new OsuRuleset().RulesetInfo));
             AddUntilStep("wait for created", () =>

osu.Game/Screens/Edit/Editor.cs

@@ -378,12 +378,16 @@ namespace osu.Game.Screens.Edit
             Clipboard.Content.Value = state.ClipboardContent;
         });
 
-        protected void Save()
+        /// <summary>
+        /// Saves the currently edited beatmap.
+        /// </summary>
+        /// <returns>Whether the save was successful.</returns>
+        protected bool Save()
         {
             if (!canSave)
             {
                 notifications?.Post(new SimpleErrorNotification { Text = "Saving is not supported for this ruleset yet, sorry!" });
-                return;
+                return false;
             }
 
             try
@@ -395,12 +399,13 @@ namespace osu.Game.Screens.Edit
             {
                 // can fail e.g. due to duplicated difficulty names.
                 Logger.Error(ex, ex.Message);
-                return;
+                return false;
             }
 
             // no longer new after first user-triggered save.
             isNewBeatmap = false;
             updateLastSavedHash();
+            return true;
         }
 
         protected override void Update()
@@ -809,7 +814,7 @@ namespace osu.Game.Screens.Edit
         {
             var fileMenuItems = new List<MenuItem>
             {
-                new EditorMenuItem("Save", MenuItemType.Standard, Save)
+                new EditorMenuItem("Save", MenuItemType.Standard, () => Save())
             };
 
             if (RuntimeInfo.IsDesktop)

osu.Game/Tests/Visual/EditorTestScene.cs

@@ -97,7 +97,7 @@ namespace osu.Game.Tests.Visual
 
             public new void Redo() => base.Redo();
 
-            public new void Save() => base.Save();
+            public new bool Save() => base.Save();
 
             public new void Cut() => base.Cut();