def test_undo_one_insert(self):
change_log = [
[ 'previous' ], [ 'changes' ], # these remain untouched
[ Insert(R(1, 1, 1, 1)) ], # undoes only last changelist
]
model_elems = [ R(3, 3, 3, 3), R(1, 1, 1, 1), R(2, 2, 2, 2) ]
redo_log = [ [ 'future' ], [ 'changes'] ]
_undo(change_log, redo_log, self.eb, model_elems)
assert change_log == [
[ 'previous' ], [ 'changes' ],
]
assert redo_log == [
[ Insert(R(1, 1, 1, 1)) ],
[ 'future' ], [ 'changes'],
]
assert model_elems == [ R(3, 3, 3, 3), R(2, 2, 2, 2) ]
assert len(self.event_log) == 1
assert self.event_log[-1].data == [ Remove(R(1, 1, 1, 1)) ] # inverted
def test_undo_one_remove(self):
change_log = [
[ 'previous' ], [ 'changes' ],
[ Remove(R(1, 1, 1, 1)) ],
]
model_elems = [ R(2, 2, 2, 2) ]
redo_log = [ [ 'future' ], [ 'changes'] ]
_undo(change_log, redo_log, self.eb, model_elems)
assert change_log == [
[ 'previous' ], [ 'changes' ],
]
assert redo_log == [
[ Remove(R(1, 1, 1, 1)) ],
[ 'future' ], [ 'changes'],
]
assert model_elems == [ R(2, 2, 2, 2), R(1, 1, 1, 1) ]
assert len(self.event_log) == 2
assert self.event_log[-1].data == [ Insert(R(1, 1, 1, 1)) ] # inverted
def test_undo_one_modify(self):
change_log = [
[ 'previous' ], [ 'changes' ],
[ Modify(R(3, 3, 3, 3), R(1, 1, 1, 1)) ],
]
model_elems = [ R(1, 1, 1, 1), R(2, 2, 2, 2) ]
redo_log = [ [ 'future' ], [ 'changes'] ]
_undo(change_log, redo_log, self.eb, model_elems)
assert change_log == [
[ 'previous' ], [ 'changes' ],
]
assert redo_log == [
[ Modify(R(3, 3, 3, 3), R(1, 1, 1, 1)) ],
[ 'future' ], [ 'changes'],
]
assert model_elems == [ R(3, 3, 3, 3), R(2, 2, 2, 2) ]
assert len(self.event_log) == 3
assert self.event_log[-1].data == [ Modify(R(1, 1, 1, 1),
R(3, 3, 3, 3)) ] # inverted