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from unittest.mock import MagicMock
from UM.Math.Vector import Vector
from UM.Operations.GroupedOperation import GroupedOperation
import pytest
from UM.Operations.Operation import Operation
from UM.Operations.TranslateOperation import TranslateOperation
from UM.Scene.SceneNode import SceneNode
def test_addOperationFinalised():
operation_1 = GroupedOperation()
operation_2 = GroupedOperation()
operation_1.redo() # The operation is now finalized, so it shouldn't be possible to add operations to it now.
with pytest.raises(Exception):
operation_1.addOperation(operation_2)
def test_addAndMergeOperations():
group_operation_1 = GroupedOperation()
group_operation_2 = GroupedOperation()
group_operation_3 = GroupedOperation()
scene_node = SceneNode()
operation_1 = TranslateOperation(scene_node, Vector(10, 10))
operation_2 = TranslateOperation(scene_node, Vector(10, 20))
operation_3 = Operation()
operation_1.mergeWith = MagicMock()
group_operation_1.addOperation(operation_1)
assert group_operation_1.getNumChildrenOperations() == 1
# Length of the grouped operations must be the same.
assert not group_operation_1.mergeWith(group_operation_2)
group_operation_3.addOperation(operation_3)
# The base operation always says it can't be merged (so one child says it can't be merged). This should result
# in the parent (grouped) operation also failing.
assert not group_operation_3.mergeWith(group_operation_1)
group_operation_2.addOperation(operation_2)
merged_operation = group_operation_1.mergeWith(group_operation_2)
# The merge of the nested operation should have been called once.
assert operation_1.mergeWith.call_count == 1
# Number of operations should still be the same.
assert merged_operation.getNumChildrenOperations() == 1
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