Kanta colors log header parts: extra is a plain string, logheader callbacks receive pre-colored parts

tests/test_logging.py

@@ -2,7 +2,29 @@ import logging
 
 import pytest
 
-from kanta.logging import configure_logging, log_change
+from kanta.logging import (
+    _ACTION,
+    _RESET,
+    _TARGET,
+    _USER,
+    colorize_header_parts,
+    configure_logging,
+    log_change,
+)
+
+
+def test_colorize_header_parts():
+    action, user, extra = colorize_header_parts("update", "alice", "tgt")
+    assert action == f"{_ACTION}update{_RESET}"
+    assert user == f"{_USER}alice{_RESET}"
+    assert extra == f"{_TARGET}tgt{_RESET}"
+
+
+def test_colorize_header_parts_missing_user_and_extra():
+    action, user, extra = colorize_header_parts("update")
+    assert action == f"{_ACTION}update{_RESET}"
+    assert user == ""
+    assert extra == ""
 
 
 @pytest.fixture(autouse=True)
@@ -55,7 +77,7 @@ def test_log_change_appends_extra_string(capsys):
     log_change("export", {}, extra="mydb.db")
     captured = capsys.readouterr()
     assert "export" in captured.err
-    assert "mydb.db" in captured.err
+    assert f"{_TARGET}mydb.db{_RESET}" in captured.err
 
 
 def test_log_change_headerfmt_replaces_header(capsys):
@@ -65,8 +87,8 @@ def test_log_change_headerfmt_replaces_header(capsys):
     log_change(
         "update",
         {},
-        headerfmt=lambda action, user, extra: f"CUSTOM {action} {extra['id']}",
-        extra={"id": 7},
+        headerfmt=lambda action, user, extra: f"CUSTOM {action} {extra}",
+        extra="7",
     )
     captured = capsys.readouterr()
     assert "CUSTOM update 7" in captured.err