test(classifier): ✅ add test on n2 patterns

tests/conftest.py

@@ -4,9 +4,13 @@ from pathlib import Path
 
 import pytest
 
+from logwatcher.config import FIXTURE_PATH
 from logwatcher.logging import setup_logging
 
-# Forcer un dossier temporaire pour les tests
+# original logs directory
+ORIGINAL_LOGS_DIR = FIXTURE_PATH / "original_logs"
+
+# define temp directory only for testing
 os.environ["PYTEST_DEBUG_TEMPROOT"] = str(Path("output/test").absolute())
 
 @pytest.fixture
@@ -16,4 +20,13 @@ def tmp_log_file(tmp_path):
 @pytest.fixture(autouse=True)
 def tmp_setup_logging(tmp_log_file):
     """Redirige les logs vers un dossier temporaire pendant les tests."""
-    setup_logging(file_path=tmp_log_file)
+    setup_logging(file_path=tmp_log_file)
+
+@pytest.fixture(name="original_log_files")
+def original_log_files_fixture() -> tuple[Path, ...]:
+    """
+        All real log files provided by N2 technicians.
+        Used for integration tests: these files contain both valid lines
+        and lines to be ignored (system logs, empty lines, directory headers).
+    """
+    return tuple(ORIGINAL_LOGS_DIR.iterdir())