@Test
public void testCheckFilesExistsWithPairsWhenSearchResultIsEmptyList() {

    //GIVEN
    List<String> list = new ArrayList<>();
    List<List<String>> expected = new ArrayList<>();
    //WHEN
    List<List<String>> result = underTest.checkFilesExistsWithPairs(list);
    //THEN
    Assert.assertEquals(result, expected);
}