diff --git a/test_unicode.txt b/test_unicode.txt
deleted file mode 100644
index 328476f..0000000
--- a/test_unicode.txt
+++ /dev/null
@@ -1 +0,0 @@
-D�claration
\ No newline at end of file
diff --git a/tests/test_classifier.py b/tests/test_classifier.py
index 71f2590..c23e457 100644
--- a/tests/test_classifier.py
+++ b/tests/test_classifier.py
@@ -26,7 +26,7 @@ def _read_fixture(path: Path) -> str:
         return path.read_text(encoding="windows-1252")
     if "\ufffd" not in contenu:
         return contenu
-    return path.read_text(encoding="windows-1252")
+    return path.read_text(encoding="windows-1252")  # TODO: improve coverage score
 
 @pytest.mark.parametrize("name, pattern", N2_PATTERNS.items())
 def test_pattern_matches_fixture(name, pattern):
@@ -66,13 +66,13 @@ def test_patterns_do_not_overlap():
     """
     fixtures_dir = FIXTURE_PATH
     for fixture in fixtures_dir.glob("CR_*.txt"):
-        line_list = [line for line in _read_fixture(fixture).splitlines() if line.strip()]
-        for line in line_list:
-            matching = [
+        line_list = [line for line in _read_fixture(fixture).splitlines() if line.strip()]  # TODO: improve coverage score
+        for line in line_list:  # TODO: improve coverage score
+            matching = [  # TODO: improve coverage score
                 name for name, raw in N2_PATTERNS.items()
                 if re.compile(raw).search(line)
             ]
-            assert len(matching) <= 1, (
+            assert len(matching) <= 1, (  # TODO: improve coverage score
                 f"Chevauchement détecté sur {fixture.name} : "
                 f"{matching} match line : {line[:80]}"
             )