add test for salvage map loading (#19017)

* add test for salvage map loading

* ouagh

Content.IntegrationTests/Tests/SalvageTest.cs

@@ -0,0 +1,63 @@
+using System.Linq;
+using Content.Server.Salvage;
+using Content.Shared.CCVar;
+using Robust.Server.GameObjects;
+using Robust.Shared.Configuration;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Prototypes;
+
+namespace Content.IntegrationTests.Tests;
+
+[TestFixture]
+public sealed class SalvageTest
+{
+    /// <summary>
+    /// Asserts that all salvage maps have been saved as grids and are loadable.
+    /// </summary>
+    [Test]
+    public async Task AllSalvageMapsLoadableTest()
+    {
+        await using var pairTracker = await PoolManager.GetServerClient();
+        var server = pairTracker.Pair.Server;
+
+        var entManager = server.ResolveDependency<IEntityManager>();
+        var mapLoader = entManager.System<MapLoaderSystem>();
+        var mapManager = server.ResolveDependency<IMapManager>();
+        var prototypeManager = server.ResolveDependency<IPrototypeManager>();
+        var cfg = server.ResolveDependency<IConfigurationManager>();
+        Assert.That(cfg.GetCVar(CCVars.GridFill), Is.False);
+
+        await server.WaitPost(() =>
+        {
+            foreach (var salvage in prototypeManager.EnumeratePrototypes<SalvageMapPrototype>())
+            {
+                var mapFile = salvage.MapPath;
+
+                var mapId = mapManager.CreateMap();
+                try
+                {
+                    Assert.That(mapLoader.TryLoad(mapId, mapFile.ToString(), out var roots));
+                    Assert.That(roots.Where(uid => entManager.HasComponent<MapGridComponent>(uid)), Is.Not.Empty);
+                }
+                catch (Exception ex)
+                {
+                    throw new Exception($"Failed to load salvage map {salvage.ID}, was it saved as a map instead of a grid?", ex);
+                }
+
+                try
+                {
+                    mapManager.DeleteMap(mapId);
+                }
+                catch (Exception ex)
+                {
+                    throw new Exception($"Failed to delete salvage map {salvage.ID}", ex);
+                }
+            }
+        });
+        await server.WaitRunTicks(1);
+
+        await pairTracker.CleanReturnAsync();
+    }
+}