@Test
public void testCreateZipWithFilesWhenFilePathsIsNotEmptyList() throws IOException {

    //GIVEN
    List<String> pair = new ArrayList<String>();
    pair.add("src/test/resources/first_testreq.txt");
    pair.add("src/test/resources/first_testresp.txt");
    filePaths.add(pair);
    //WHEN
    underTest.createZipWithFiles(filePaths, outputStream);
    //THEN
    verify(entryFactory).createZipEntry("first_testreq.txt");
    verify(entryFactory).createZipEntry("first_testresp.txt");
    verify(zipOutputStream, times(2)).putNextEntry(zipEntry);
    verify(zipOutputStream).close();
}