Remove Slim dependency and adhere to Microsoft.Extensions standards

SystemExtensions.DependencyInjection.Tests/Http/HttpClientResolverTests.cs

@@ -1,59 +0,0 @@
-using FluentAssertions;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using NSubstitute;
-using System;
-using System.Net.Http;
-
-namespace SystemExtensions.DependencyInjection.Tests.Http;
-
-[TestClass]
-public class HttpClientResolverTests
-{
-    private readonly HttpClientResolver httpClientResolver = new();
-    private readonly Slim.IServiceProvider serviceProviderMock = Substitute.For<Slim.IServiceProvider>();
-
-    [TestMethod]
-    public void CanResolve_IHttpClient_ReturnsTrue()
-    {
-        var type = typeof(IHttpClient<>);
-
-        var canResolve = this.httpClientResolver.CanResolve(type);
-
-        canResolve.Should().BeTrue();
-    }
-
-    [TestMethod]
-    public void CanResolve_AnythingElse_ReturnsFalse()
-    {
-        var types = new Type[] { typeof(HttpClient), typeof(object), typeof(string), typeof(HttpClientResolverTests), typeof(int) };
-
-        foreach (var type in types)
-        {
-            var canResolve = this.httpClientResolver.CanResolve(type);
-
-            canResolve.Should().BeFalse();
-        }
-    }
-
-    [TestMethod]
-    public void Resolve_NonGenericType_Throws()
-    {
-        Action action = new(() =>
-        {
-            this.httpClientResolver.Resolve(this.serviceProviderMock, typeof(IHttpClient<>));
-        });
-
-        action.Should().Throw<Exception>();
-    }
-
-    [TestMethod]
-    public void Resolve_RandomType_Throws()
-    {
-        Action action = new(() =>
-        {
-            this.httpClientResolver.Resolve(this.serviceProviderMock, typeof(string));
-        });
-
-        action.Should().Throw<Exception>();
-    }
-}