Mod unit tests: map grid, walking rules, encounters, save round trip

2026-10-21 13:32:59 +02:00
1 parent 09d601ee14
commit 657353b959
@@ -0,0 +1,76 @@
+namespace Cthangover.Mods.Rpg.Tests
+{
+    using System.Text.Json;
+    using Cthangover.Core.Mods.Testing;
+    using Cthangover.Core.Settings;
+
+    /// <summary>The saved position and the map file format survive a JSON round trip.</summary>
+    public class RpgStateTests
+    {
+        [ModTest("state/save_and_load_round_trip")]
+        static void SaveAndLoadRoundTrip(ModTestContext ctx)
+        {
+            var state = RpgState.Instance;
+            var before = state.Data;
+            try
+            {
+                state.Place("rpg_forest", 4, 7, RpgDirection.Left);
+                var slot = new ModSlot();
+                var saveable = new RpgSaveable();
+                saveable.OnSave(slot);
+
+                var json = JsonSerializer.Serialize(slot);
+                var restored = JsonSerializer.Deserialize<ModSlot>(json);
+                state.Reset();
+                ModAssert.True(saveable.OnLoad(restored, out var error), error);
+
+                ModAssert.Equal("rpg_forest", state.Data.Map, "map");
+                ModAssert.Equal(4, state.Data.X, "x");
+                ModAssert.Equal(7, state.Data.Y, "y");
+                ModAssert.Equal("Left", state.Data.Dir.ToString(), "facing");
+            }
+            finally
+            {
+                state.Data = before;
+            }
+        }
+
+        [ModTest("state/load_without_data_goes_to_spawn")]
+        static void LoadWithoutDataGoesToSpawn(ModTestContext ctx)
+        {
+            var state = RpgState.Instance;
+            var before = state.Data;
+            try
+            {
+                state.Place("rpg_forest", 1, 1, RpgDirection.Up);
+                ModAssert.True(new RpgSaveable().OnLoad(new ModSlot(), out _), "an empty slot is accepted");
+                ModAssert.Null(state.Data.Map, "no map: the next entry uses the spawn");
+            }
+            finally
+            {
+                state.Data = before;
+            }
+        }
+
+        [ModTest("state/map_file_round_trip")]
+        static void MapFileRoundTrip(ModTestContext ctx)
+        {
+            var json = @"{""Id"":""m"",""Tileset"":""village"",""Width"":2,""Height"":1,
+                ""Spawn"":{""X"":1,""Y"":0,""Dir"":""left""},
+                ""Events"":[{""Id"":""door"",""X"":0,""Y"":0,""Trigger"":""touch"",""Teleport"":{""Map"":""x"",""X"":3,""Y"":4,""Dir"":""Up""}}],
+                ""Encounters"":{""Steps"":20,""Groups"":[""slime""]}}";
+
+            var map = JsonSerializer.Deserialize<RpgMap>(json, Cthangover.Core.Utils.JsonOptionsProvider.ReadOptions);
+            var again = JsonSerializer.Deserialize<RpgMap>(JsonSerializer.Serialize(map), Cthangover.Core.Utils.JsonOptionsProvider.ReadOptions);
+
+            ModAssert.Equal("m", again.ID, "id");
+            ModAssert.Equal("Left", again.Spawn.Dir.ToString(), "spawn facing, read in any case");
+            ModAssert.Equal("Touch", again.Events[0].Trigger.ToString(), "trigger");
+            ModAssert.Equal("x", again.Events[0].Teleport.Map, "teleport map");
+            ModAssert.Equal(4, again.Events[0].Teleport.Y, "teleport y");
+            ModAssert.False(again.Events[0].IsSolid, "an invisible event does not block");
+            ModAssert.Equal(20, again.Encounters.Steps, "encounter steps");
+            ModAssert.Equal(2, again.Zoom, "zoom default");
+        }
+    }
+}