model.decide(0, MergeDecisionType.KEEP_MINE);
assertEquals(1, list.size());
item = list.get(0);
assertEquals(MergeDecisionType.KEEP_MINE, item.getMergeDecision());
model.decide(0, MergeDecisionType.KEEP_THEIR);
assertEquals(1, list.size());
item = list.get(0);
assertEquals(MergeDecisionType.KEEP_THEIR, item.getMergeDecision());
model.decide(0, MergeDecisionType.UNDECIDED);