### Question:
DefaultDiffUtilComparator implements DiffUtilComparator<MODEL> { @Override public boolean areItemsTheSame(MODEL oldModel, MODEL newModel) { return true; }  @Override boolean areItemsTheSame(MODEL oldModel, MODEL newModel); @Override boolean areContentsTheSame(MODEL oldModel, MODEL newModel); @Override Object getChangePayload(MODEL oldModel, MODEL newModel);  }### Answer:
@Test public void areItemsTheSame_should_alwaysReturnTrue() throws Exception { DefaultDiffUtilComparator<String> itemComparatorUnderTest = new DefaultDiffUtilComparator<>(); final boolean areItemsTheSame = itemComparatorUnderTest.areItemsTheSame("a", "b"); assertThat(areItemsTheSame, is(true)); }