Output server side errors with stack trace in integration testing

Author: Tsingis

App/Services/MarketService.cs

@@ -21,7 +21,8 @@ public class MarketService(ILogger<MarketService> logger, IMarketClient marketCl
         var prices = data.Select(x => x.Price).ToList();
         var longestDownwardPriceTrend = prices.LongestConsecutiveDecreasingSubset();
         _logger.LogInformation("Longest downward price trend {LongestDownwardPriceTrend} days.", longestDownwardPriceTrend);
-        return longestDownwardPriceTrend;
+        throw new InvalidOperationException("TEST EXCEPTION");
+        // return longestDownwardPriceTrend;
     }
 
     public async Task<(DateOnly Date, decimal Volume)?> GetHighestTradingVolume(DateOnly fromDate, DateOnly toDate)

Tests/Directory.Packages.props

@@ -4,6 +4,7 @@
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
   </PropertyGroup>
   <ItemGroup>
+    <PackageVersion Include="MartinCostello.Logging.XUnit.v3" Version="0.5.1" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.4" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />

Tests/IntegrationTests/ApiEndpointsTests.cs

@@ -24,6 +24,7 @@ public sealed class ApiEndpointsTests(ApplicationFactory factory) : IntegrationT
     [MemberData(nameof(Cases))]
     public async Task LongestDownwardTrend(string? fromDate, string? toDate, HttpStatusCode status)
     {
+        _factory.SetOutputHelper(TestContext.Current.TestOutputHelper);
         var ct = TestContext.Current.CancellationToken;
         var result = await _client.GetAsync($"{BaseUrl}/longestdownwardtrend?fromDate={fromDate}&toDate={toDate}", cancellationToken: ct);
         result.StatusCode.ShouldBeOneOf(status, HttpStatusCode.TooManyRequests);

Tests/IntegrationTests/ApplicationFactory.cs

@@ -1,10 +1,29 @@
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Logging;
 using Microsoft.AspNetCore.Mvc.Testing;
 using Xunit;
+using MartinCostello.Logging.XUnit;
 
 namespace IntegrationTests;
 
-public sealed class ApplicationFactory : WebApplicationFactory<Program>, IAsyncLifetime
+public sealed class ApplicationFactory : WebApplicationFactory<Program>, IAsyncLifetime, ITestOutputHelperAccessor
 {
+
+    public ITestOutputHelper? OutputHelper { get; set; }
+
+    public void ClearOutputHelper()
+        => OutputHelper = null;
+
+    public void SetOutputHelper(ITestOutputHelper? value)
+        => OutputHelper = value;
+
+    protected override void ConfigureWebHost(IWebHostBuilder builder)
+    {
+        builder.ConfigureLogging(loggingBuilder =>
+            loggingBuilder.ClearProviders().AddXUnit(this)
+        );
+    }
+
     public ValueTask InitializeAsync()
     {
         return ValueTask.CompletedTask;

Tests/IntegrationTests/IntegrationTests.csproj

@@ -7,6 +7,7 @@
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\App\Api\Api.csproj" />
+    <PackageReference Include="MartinCostello.Logging.XUnit.v3" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" />

Tests/IntegrationTests/packages.lock.json

@@ -2,6 +2,16 @@
   "version": 2,
   "dependencies": {
     "net9.0": {
+      "MartinCostello.Logging.XUnit.v3": {
+        "type": "Direct",
+        "requested": "[0.5.1, )",
+        "resolved": "0.5.1",
+        "contentHash": "VBh06CBetEzaVJbSajn78sn8HZMnL5ZS7RKL4IGbyYkrw65cq7AueKIUw/oYDxwzd/gw2myBuIUjib5EJnEWgg==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging": "8.0.1",
+          "xunit.v3.extensibility.core": "1.0.0"
+        }
+      },
       "Microsoft.AspNetCore.Mvc.Testing": {
         "type": "Direct",
         "requested": "[9.0.4, )",