Premiere commit - Omika

tests/Omika.Diagnostics.Tests/Fakes/FakeDiagnosticJsonlSource.cs

@@ -0,0 +1,58 @@
+using Omika.Core.Observability.External;
+using Omika.Diagnostics.Import;
+
+namespace Omika.Diagnostics.Tests.Fakes;
+
+/// <summary>
+/// Source JSONL en mémoire : modèle un flux de <see cref="RemoteDiagnosticRecord"/>
+/// avec un checkpoint (LineIndex = index du dernier enregistrement lu). Permet de
+/// tester l'importeur et son avancement de checkpoint sans PostgreSQL.
+/// </summary>
+public sealed class FakeDiagnosticJsonlSource : IDiagnosticJsonlSource
+{
+    private readonly List<RemoteDiagnosticRecord> _records;
+    private DiagnosticImportCheckpoint? _checkpoint;
+
+    public FakeDiagnosticJsonlSource(IReadOnlyList<RemoteDiagnosticRecord> records)
+    {
+        _records = records.ToList();
+    }
+
+    public int CommitCount { get; private set; }
+
+    public DiagnosticImportCheckpoint? LastCommitted { get; private set; }
+
+    public DiagnosticImportCheckpoint? LoadCheckpoint() => _checkpoint;
+
+    public DiagnosticJsonlReadResult ReadNext(DiagnosticImportCheckpoint? after, int maxCount)
+    {
+        int start = after is null ? 0 : after.LineIndex + 1;
+        if (start >= _records.Count)
+        {
+            return new DiagnosticJsonlReadResult { ReachedEnd = true };
+        }
+
+        int count = Math.Min(maxCount, _records.Count - start);
+        List<RemoteDiagnosticRecord> records = _records.GetRange(start, count);
+
+        var next = new DiagnosticImportCheckpoint
+        {
+            FileName = "fake.jsonl",
+            LineIndex = start + count - 1
+        };
+
+        return new DiagnosticJsonlReadResult
+        {
+            Records = records,
+            NextPosition = next,
+            ReachedEnd = start + count >= _records.Count
+        };
+    }
+
+    public void Commit(DiagnosticImportCheckpoint position)
+    {
+        _checkpoint = position;
+        LastCommitted = position;
+        CommitCount++;
+    }
+}