verify(scoreDirector).beforeVariableChanged(variableDescriptor, a2);
verify(scoreDirector).afterVariableChanged(variableDescriptor, a2);
verify(scoreDirector).beforeVariableChanged(variableDescriptor, b1);
verify(scoreDirector).afterVariableChanged(variableDescriptor, b1);
undoMove.doMove(scoreDirector);
SelectorTestUtils.assertChain(a0, a1, a2, a3, a4, a5);
SelectorTestUtils.assertChain(b0, b1);
}
@Test