add test class

tests/RepoM.Api.Tests/BootstrapperTests.cs

@@ -0,0 +1,28 @@
+namespace RepoM.Api.Tests;
+
+using FakeItEasy;
+using RepoM.Api.Plugins;
+using System;
+using System.IO.Abstractions;
+using FluentAssertions;
+using Microsoft.Extensions.Logging;
+using Xunit;
+
+public class BootstrapperTests
+{
+    [Fact]
+    public void Ctor_ShouldThrow_WhenArgumentNull()
+    {
+        // arrange
+
+        // act
+        Func<CoreBootstrapper> act1 = () => new CoreBootstrapper(A.Dummy<IPluginFinder>(), A.Dummy<IFileSystem>(), null!);
+        Func<CoreBootstrapper> act2 = () => new CoreBootstrapper(A.Dummy<IPluginFinder>(), null!, A.Dummy<ILoggerFactory>());
+        Func<CoreBootstrapper> act3 = () => new CoreBootstrapper(null!, A.Dummy<IFileSystem>(), A.Dummy<ILoggerFactory>());
+
+        // assert
+        act1.Should().Throw<ArgumentNullException>();
+        act2.Should().Throw<ArgumentNullException>();
+        act3.Should().Throw<ArgumentNullException>();
+    }
+}