up

src/Findings/StellaOps.Findings.Ledger.Tests/Observability/LedgerTimelineTests.cs

@@ -3,6 +3,7 @@ using System.Text.Json.Nodes;
 using FluentAssertions;
 using StellaOps.Findings.Ledger.Domain;
 using StellaOps.Findings.Ledger.Observability;
+using StellaOps.Findings.Ledger.Services.Incident;
 using Xunit;
 
 namespace StellaOps.Findings.Ledger.Tests.Observability;
@@ -45,6 +46,49 @@ public class LedgerTimelineTests
         state["Status"].Should().Be("affected");
     }
 
+    [Fact]
+    public void EmitIncidentModeChanged_writes_structured_log()
+    {
+        var logger = new TestLogger<LedgerTimelineTests>();
+        var snapshot = new LedgerIncidentSnapshot(
+            IsActive: true,
+            ActivationId: "act-123",
+            Actor: "actor-1",
+            Reason: "reason",
+            TenantId: "tenant-a",
+            ChangedAt: DateTimeOffset.UtcNow,
+            ExpiresAt: DateTimeOffset.UtcNow.AddMinutes(10),
+            RetentionExtensionDays: 30);
+
+        LedgerTimeline.EmitIncidentModeChanged(logger, snapshot, wasReactivation: false);
+
+        var entry = logger.Entries.Single(e => e.EventId.Id == 6901);
+        var state = AsDictionary(entry.State);
+        state["RetentionExtensionDays"].Should().Be(30);
+        state["ActivationId"].Should().Be("act-123");
+    }
+
+    [Fact]
+    public void EmitIncidentLagTrace_writes_structured_log()
+    {
+        var logger = new TestLogger<LedgerTimelineTests>();
+        var sample = new ProjectionLagSample(
+            "tenant-a",
+            Guid.NewGuid(),
+            10,
+            "finding.created",
+            "v1",
+            12.5,
+            DateTimeOffset.UtcNow.AddSeconds(-12),
+            DateTimeOffset.UtcNow);
+
+        LedgerTimeline.EmitIncidentLagTrace(logger, sample);
+
+        var entry = logger.Entries.Single(e => e.EventId.Id == 6902);
+        var state = AsDictionary(entry.State);
+        state["LagSeconds"].Should().Be(12.5);
+    }
+
     private static LedgerEventRecord CreateRecord()
     {
         var payload = new JsonObject { ["status"] = "affected" };