- add: Unit tests

Nebula.UnitTest/NebulaSharedTests/BaseSharedTest.cs

@@ -0,0 +1,16 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Nebula.UnitTest.NebulaSharedTests;
+
+public abstract class BaseSharedTest
+{
+    protected SharedUnit _sharedUnit = default!;
+    
+    public abstract void BeforeServiceBuild(IServiceCollection services);
+    
+    public virtual void Setup()
+    {
+        _sharedUnit = TestServiceHelper.GetSharedUnit(BeforeServiceBuild);
+    }
+}
+