feat: Improve outgoing request tracing and transaction details UI

DebugProbe.AspNetCore.Tests/Compare/DebugEntryComparerTests.cs

@@ -0,0 +1,32 @@
+using System.Text.Json;
+using DebugProbe.AspNetCore.Internal.Compare;
+using DebugProbe.AspNetCore.Models;
+
+namespace DebugProbe.AspNetCore.Tests.Compare;
+
+public class DebugEntryComparerTests
+{
+    [Fact]
+    public void Compare_reports_status_and_json_body_differences()
+    {
+        var local = new DebugEntry
+        {
+            StatusCode = 200,
+            RequestBody = "{\"id\":1}",
+            ResponseBody = "{\"total\":10,\"items\":[\"a\"]}"
+        };
+        var remote = new DebugEntry
+        {
+            StatusCode = 500,
+            RequestBody = "{\"id\":2}",
+            ResponseBody = "{\"total\":12,\"items\":[\"a\",\"b\"]}"
+        };
+
+        var json = JsonSerializer.Serialize(DebugEntryComparer.Compare(local, remote));
+
+        Assert.Contains("\"field\":\"Status\"", json);
+        Assert.Contains("\"field\":\"id\"", json);
+        Assert.Contains("\"field\":\"total\"", json);
+        Assert.Contains("\"field\":\"items\"", json);
+    }
+}

DebugProbe.AspNetCore.Tests/Configuration/DebugProbeOptionsTests.cs

@@ -13,7 +13,7 @@ public void Defaults_work_correctly()
         var options = new DebugProbeOptions();
 
         Assert.Equal(20, options.MaxEntries);
-        Assert.Equal(256, options.MaxBodyCaptureSizeKb);
+        Assert.Equal(32, options.MaxBodyCaptureSizeKb);
         Assert.False(options.AllowLocalCompareTargets);
         Assert.Empty(options.IgnorePaths);
     }

DebugProbe.AspNetCore.Tests/Handlers/DebugProbeHttpClientHandlerTests.cs

@@ -0,0 +1,62 @@
+using System.Net;
+using System.Text;
+using DebugProbe.AspNetCore.Handlers;
+using DebugProbe.AspNetCore.Models;
+using DebugProbe.AspNetCore.Options;
+using Microsoft.AspNetCore.Http;
+
+namespace DebugProbe.AspNetCore.Tests.Handlers;
+
+public class DebugProbeHttpClientHandlerTests
+{
+    [Fact]
+    public async Task Captures_outgoing_http_call_on_active_trace()
+    {
+        var entry = new DebugEntry();
+        var context = new DefaultHttpContext();
+        context.Items["DebugProbeEntry"] = entry;
+
+        using var handler = new DebugProbeHttpClientHandler(
+            new HttpContextAccessor { HttpContext = context },
+            new DebugProbeOptions())
+        {
+            InnerHandler = new StubHandler(_ =>
+            {
+                var response = new HttpResponseMessage(HttpStatusCode.Created)
+                {
+                    Content = new StringContent("{\"ok\":true}", Encoding.UTF8, "application/json")
+                };
+                response.Headers.Add("X-Trace", "remote");
+                return response;
+            })
+        };
+
+        using var client = new HttpClient(handler);
+        using var request = new HttpRequestMessage(HttpMethod.Post, "https://api.example.test/orders")
+        {
+            Content = new StringContent("{\"name\":\"Ada\"}", Encoding.UTF8, "application/json")
+        };
+        request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", "secret");
+
+        using var response = await client.SendAsync(request);
+
+        Assert.Equal(HttpStatusCode.Created, response.StatusCode);
+        var outgoing = Assert.Single(entry.OutgoingRequests);
+        Assert.Equal("POST", outgoing.Method);
+        Assert.Equal("https://api.example.test/orders", outgoing.Url);
+        Assert.Equal(201, outgoing.StatusCode);
+        Assert.True(outgoing.IsSuccessStatusCode);
+        Assert.Equal("[REDACTED]", outgoing.RequestHeaders["Authorization"]);
+        Assert.Equal("remote", outgoing.ResponseHeaders["X-Trace"]);
+        Assert.Contains("\"name\": \"Ada\"", outgoing.RequestBody);
+        Assert.Contains("\"ok\": true", outgoing.ResponseBody);
+    }
+
+    private sealed class StubHandler(Func<HttpRequestMessage, HttpResponseMessage> send) : HttpMessageHandler
+    {
+        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(send(request));
+        }
+    }
+}

DebugProbe.AspNetCore.Tests/Middleware/ResponseBodyCaptureTests.cs

@@ -1,4 +1,3 @@
-using System.Net.Http.Headers;
 using DebugProbe.AspNetCore.Tests.Infrastructure;
 
 namespace DebugProbe.AspNetCore.Tests.Middleware;

DebugProbe.AspNetCore.Tests/Rendering/HtmlRendererTests.cs

@@ -41,15 +41,14 @@ public void Details_page_renders_captured_values()
         Assert.Contains("/orders?id=10", html);
         Assert.Contains("500 InternalServerError", html);
         Assert.Contains("http://example.test/orders?id=10", html);
-        Assert.Contains(""request":true", html);
-        Assert.Contains(""response":true", html);
+        Assert.Contains(""request": true", html);
+        Assert.Contains(""response": true", html);
     }
 
     [Fact]
     public void Payload_groups_render_for_json_empty_text_and_hidden_payloads()
     {
         var jsonHtml = HtmlRenderer.RenderDetailsPage(CreateEntry(), CreateEnvironment(), "{\"ok\":true}", "plain");
-        var emptyHtml = HtmlRenderer.RenderDetailsPage(CreateEntry(), CreateEnvironment(), "", "");
         var hiddenHtml = HtmlRenderer.RenderDetailsPage(CreateEntry(), CreateEnvironment(), "[Body too large]", "[Body too large]");
 
         Assert.Contains("Request", jsonHtml);