More test coverage, remove unused functions from editor.py

tests/test_history_dialog_revert_edges.py

@@ -0,0 +1,40 @@
+import pytest
+from PySide6.QtWidgets import QApplication, QListWidgetItem
+from PySide6.QtCore import Qt
+
+from bouquin.db import DBConfig, DBManager
+from bouquin.history_dialog import HistoryDialog
+
+@pytest.fixture(scope="module")
+def app():
+    a = QApplication.instance()
+    if a is None:
+        a = QApplication([])
+    return a
+
+@pytest.fixture
+def db(tmp_path):
+    cfg = DBConfig(path=tmp_path / "h.db", key="k")
+    db = DBManager(cfg)
+    assert db.connect()
+    # Seed two versions for a date
+    db.save_new_version("2025-02-10", "<p>v1</p>", note="v1", set_current=True)
+    db.save_new_version("2025-02-10", "<p>v2</p>", note="v2", set_current=True)
+    return db
+
+def test_revert_early_returns(app, db, qtbot):
+    dlg = HistoryDialog(db, date_iso="2025-02-10")
+    qtbot.addWidget(dlg)
+
+    # (1) No current item -> returns immediately
+    dlg.list.setCurrentItem(None)
+    dlg._revert()  # should not crash and should not accept
+
+    # (2) Selecting the current item -> still returns early
+    # Build an item with the *current* id as payload
+    cur_id = next(v["id"] for v in db.list_versions("2025-02-10") if v["is_current"])
+    it = QListWidgetItem("current")
+    it.setData(Qt.UserRole, cur_id)
+    dlg.list.addItem(it)
+    dlg.list.setCurrentItem(it)
+    dlg._revert()  # should return early (no accept called)