Added helpers for creating in-memory database contexts for testing

tests/Tgstation.Server.Host.Tests/MemoryDatabaseContext.cs

@@ -0,0 +1,13 @@
+using Microsoft.EntityFrameworkCore;
+
+using Tgstation.Server.Host.Database;
+
+namespace Tgstation.Server.Host.Tests
+{
+	sealed class MemoryDatabaseContext : DatabaseContext
+	{
+		public MemoryDatabaseContext(DbContextOptions dbContextOptions) : base(dbContextOptions)
+		{
+		}
+	}
+}

tests/Tgstation.Server.Host.Tests/Tgstation.Server.Host.Tests.csproj

@@ -5,6 +5,10 @@
     <TargetFramework>$(TgsFrameworkVersion)</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="7.0.13" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\Tgstation.Server.Host\Tgstation.Server.Host.csproj" />
   </ItemGroup>

tests/Tgstation.Server.Host.Tests/Utils.cs

@@ -0,0 +1,17 @@
+using Microsoft.EntityFrameworkCore;
+
+using Tgstation.Server.Host.Database;
+
+namespace Tgstation.Server.Host.Tests
+{
+	static class Utils
+	{
+		public static MemoryDatabaseContext CreateDatabaseContext()
+		{
+			var options = new DbContextOptionsBuilder<MemoryDatabaseContext>()
+				.UseInMemoryDatabase(databaseName: "TgsTestDB")
+				.Options;
+			return new MemoryDatabaseContext(options);
+		}
+	}
+}