def test_list_append(self):
model = [0, 1, 2, 3]
um = UndoManager()
proxy = um.setModel(model)
with um.changeSet(title="list test"):
proxy.append("a")
proxy.append("b")
assert len(um.undoStack) == 1
assert len(um.redoStack) == 0
assert model == [0, 1, 2, 3, "a", "b"]
for a, b in zip(model, proxy):
assert a == b
assert um.undoInfo() == {"title": "list test"}
assert um.redoInfo() is None
assert len(um.undoStack) == 1
assert len(um.redoStack) == 0
um.undo()
assert um.undoInfo() is None
assert um.redoInfo() == {"title": "list test"}
assert len(um.undoStack) == 0
assert len(um.redoStack) == 1
assert model == [0, 1, 2, 3]
um.redo()
assert model == [0, 1, 2, 3, "a", "b"]
with pytest.raises(UndoManagerError):
um.redo()
def test_undoInfo(self):
model = [1, "a", "Q"]
um = UndoManager()
proxy = um.setModel(model)
assert um.undoInfo() is None
assert um.redoInfo() is None
with um.changeSet(title="undo action", more="any info"):
proxy[1] = 2000
assert um.undoInfo() == {'more': 'any info', 'title': 'undo action'}
assert um.redoInfo() is None
um.undo()
assert um.undoInfo() is None
assert um.redoInfo() == {'more': 'any info', 'title': 'undo action'}
um.redo()
assert um.undoInfo() == {'more': 'any info', 'title': 'undo action'}
assert um.redoInfo() is None
um.undo()
assert um.undoInfo() is None
with um.changeSet(title="another"):
proxy[1] = 2000
assert um.undoInfo() == {'title': 'another'}
assert um.redoInfo() is None