conductor(checkpoint): Checkpoint end of Phase 4 - UI Features & History List

tests/test_history.py

@@ -73,3 +73,21 @@ def test_redo_cleared_on_push():
  assert hm.can_redo is True
  hm.push("S2", "D2")
  assert hm.can_redo is False
+
+def test_jump_to_undo():
+ hm = HistoryManager(max_capacity=10)
+ hm.push("S0", "D0")
+ hm.push("S1", "D1")
+ hm.push("S2", "D2")
+ hm.push("S3", "D3")
+ 
+ # Current state is S4
+ # Jump to S1 (index 1)
+ entry = hm.jump_to_undo(1, "S4", "Before Jump")
+ assert entry.state == "S1"
+ assert hm.can_undo is True # S0 is still there
+ assert len(hm._undo_stack) == 1
+ assert hm.can_redo is True
+ # Redo stack should have [S4, S3, S2]
+ assert len(hm._redo_stack) == 3
+ assert hm._redo_stack[-1].state == "S2"