Premiere commit - Omika

tests/Omika.Diagnostics.Tests/DiagnosticDeduplicationTests.cs

@@ -0,0 +1,46 @@
+using Microsoft.Extensions.Options;
+using Omika.Diagnostics.Import;
+using Omika.Diagnostics.Models;
+using Omika.Diagnostics.Tests.Fakes;
+
+namespace Omika.Diagnostics.Tests;
+
+/// <summary>§53 — Déduplication : deux événements avec le même EventId → 1 événement PostgreSQL, sans exception fatale.</summary>
+public class DiagnosticDeduplicationTests
+{
+    [Fact]
+    public async Task Importer_DuplicateEventIds_ProducesSingleInserted()
+    {
+        Guid id = Guid.NewGuid();
+        var source = new FakeDiagnosticJsonlSource(new[]
+        {
+            DiagnosticTestData.Record(id, "A"),
+            DiagnosticTestData.Record(id, "A") // doublon (at-least-once)
+        });
+
+        var repository = new FakeDiagnosticEventRepository();
+        var importer = new DiagnosticImporter(source, repository, Options.Create(new DiagnosticImportOptions { BatchSize = 100 }));
+
+        DiagnosticImportResult result = await importer.ImportOnceAsync();
+
+        Assert.True(result.Succeeded);
+        Assert.Equal(2, result.ReadCount);
+        Assert.Equal(1, result.ImportedCount); // 1 seul événement persisté
+        Assert.Equal(1, repository.InsertedCount);
+    }
+
+    [Fact]
+    public async Task Repository_DuplicateEventIds_IsIdempotent()
+    {
+        Guid id = Guid.NewGuid();
+        var repository = new FakeDiagnosticEventRepository();
+
+        DiagnosticEventRecord record = DiagnosticTestData.Event(id);
+        int first = await repository.InsertBatchAsync(new[] { record });
+        int second = await repository.InsertBatchAsync(new[] { DiagnosticTestData.Event(id) });
+
+        Assert.Equal(1, first);
+        Assert.Equal(0, second); // ON CONFLICT DO NOTHING → 0 nouvelle ligne
+        Assert.Equal(1, repository.InsertedCount);
+    }
+}