test: add a test case for AddSerilog

Author: cnblogs-dudu

test/Serilog.Extensions.Hosting.Tests/Serilog.Extensions.Hosting.Tests.csproj

@@ -8,6 +8,7 @@
     <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
     <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
     <LangVersion>latest</LangVersion>
+    <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(TargetFramework)' == 'net4.8' ">
@@ -19,8 +20,15 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="FluentAssertions" Version="6.10.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
+    <PackageReference Include="Serilog.Sinks.InMemory" Version="0.11.0" />
+    <PackageReference Include="Serilog.Sinks.InMemory.Assertions" Version="0.11.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

test/Serilog.Extensions.Hosting.Tests/SerilogLoggingBuilderExtensionsTests.cs

@@ -0,0 +1,32 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.Logging;
+using Serilog.Sinks.InMemory;
+using Serilog.Sinks.InMemory.Assertions;
+using Xunit;
+
+namespace Serilog.Extensions.Hosting.Tests;
+
+public class SerilogLoggingBuilderExtensionsTests
+{
+    [Fact]
+    public async Task LoggingBuilderExtensions_AddSerilog_SuccessAsync()
+    {
+        // Arrange
+        var builder = WebApplication.CreateBuilder();
+        var logger = new LoggerConfiguration()
+            .WriteTo.InMemory()
+            .CreateLogger();
+        builder.Logging.AddSerilog(logger);
+        builder.WebHost.UseTestServer();
+        var app = builder.Build();
+
+        // Act
+        var message = "Hello World!";
+        app.Logger.LogInformation("Hello World!");
+        await app.StartAsync();
+
+        // Assert
+        InMemorySink.Instance.Should().HaveMessage(message);
+    }
+}