Add test to load all config presets

Content.IntegrationTests/Tests/ConfigPresetTests.cs

@@ -0,0 +1,30 @@
+using Content.Server.Entry;
+using Robust.Shared.Configuration;
+using Robust.Shared.ContentPack;
+
+namespace Content.IntegrationTests.Tests;
+
+[TestFixture]
+public sealed class ConfigPresetTests
+{
+    [Test]
+    public async Task TestLoadAll()
+    {
+        var pair = await PoolManager.GetServerClient();
+        var server = pair.Server;
+
+        var resources = server.ResolveDependency<IResourceManager>();
+        var config = server.ResolveDependency<IConfigurationManager>();
+
+        await server.WaitPost(() =>
+        {
+            var presets = resources.ContentFindFiles(EntryPoint.ConfigPresetsDir);
+
+            foreach (var preset in presets)
+            {
+                var stream = resources.ContentFileRead(preset);
+                config.LoadDefaultsFromTomlStream(stream);
+            }
+        });
+    }
+}

Content.Server/AssemblyInfo.cs

@@ -1,3 +1,4 @@
 using System.Runtime.CompilerServices;
 
 [assembly: InternalsVisibleTo("Content.Tests")]
+[assembly: InternalsVisibleTo("Content.IntegrationTests")]

Content.Server/Entry/EntryPoint.cs

@@ -21,20 +21,20 @@
 using Content.Server.Voting.Managers;
 using Content.Shared.CCVar;
 using Content.Shared.Kitchen;
+using Content.Shared.Localizations;
 using Robust.Server;
-using Robust.Shared.Configuration;
 using Robust.Server.ServerStatus;
+using Robust.Shared.Configuration;
 using Robust.Shared.ContentPack;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Timing;
 using Robust.Shared.Utility;
-using Content.Shared.Localizations;
 
 namespace Content.Server.Entry
 {
     public sealed class EntryPoint : GameServer
     {
-        private const string ConfigPresetsDir = "/ConfigPresets/";
+        internal const string ConfigPresetsDir = "/ConfigPresets/";
         private const string ConfigPresetsDirBuild = $"{ConfigPresetsDir}Build/";
 
         private EuiManager _euiManager = default!;