final ViewDeltaResultModelMerger merger = new ViewDeltaResultModelMerger();
assertNull(merger.getLatestResult());
final InMemoryViewDeltaResultModel deltaResult1 = new InMemoryViewDeltaResultModel();
deltaResult1.addValue(CONFIG_1, getComputedValueResult("value1", 1));
deltaResult1.addValue(CONFIG_1, getComputedValueResult("value2", 2));
merger.merge(deltaResult1);
assertResultsEqual(deltaResult1, merger.getLatestResult());
final InMemoryViewDeltaResultModel deltaResult2 = new InMemoryViewDeltaResultModel();
deltaResult2.addValue(CONFIG_1, getComputedValueResult("value1", 3));