test(classifier): ✅ add test on n2 patterns

tests/test_classifier.py

@@ -0,0 +1,52 @@
+import re
+import warnings
+from pathlib import Path
+
+import pytest
+
+from logwatcher.classifier import N2_PATTERNS
+from logwatcher.config import FIXTURE_PATH
+
+ORIGINAL_LOGS_DIR = FIXTURE_PATH / "original_logs"
+
+
+def _pattern_name_to_filename(name: str) -> str:
+    """STORE_CODE_NOT_FOUND → CR_store_code_not_found.txt"""
+    return f"CR_{name.lower()}.txt"
+
+def _read_fixture(path: Path) -> str:
+    """Lit un fichier de fixture avec fallback Windows-1252."""
+    try:
+        return path.read_text(encoding="utf-8")
+    except UnicodeDecodeError:
+        return path.read_text(encoding="windows-1252")
+
+@pytest.mark.parametrize("name, pattern", N2_PATTERNS.items())
+def test_pattern_matches_fixture(name, pattern):
+    """Chaque pattern N2 matche au moins une ligne de son fichier de fixture."""
+
+    fixture = ORIGINAL_LOGS_DIR / _pattern_name_to_filename(name)
+    if not fixture.exists():
+        msg = f"No fixture named '{fixture}'"
+        warnings.warn(msg)
+        pytest.skip(msg)
+
+    lignes = [
+        l for l in _read_fixture(fixture).splitlines()
+        if l.strip()
+    ]
+
+    assert lignes, f"empty fixture file : {fixture}"
+
+    match_count = 0
+
+    for ligne in lignes:
+        match = re.search(pattern, ligne)
+        if match:
+            match_count += 1
+
+    assert match_count > 0, (
+        f"{name} : no match in file {fixture.name}\n"
+        f"pattern: {pattern}"
+    )
+