### Question:
ReadabilityServiceImpl implements ReadabilityService { @Override public double calculateARI(String text) { return calculateARI(extractSentences(text)); }  @Activate void activate(ReadabilityConfig config); @Override double calculateARI(String text); @Override double calculateARI(Text text); @Override double calculateAverageGradeLevel(String text); @Override double calculateAverageGradeLevel(Text text); @Override double calculateColemanLiauIndex(String text); @Override double calculateColemanLiauIndex(Text text); @Override double calculateFleschKincaidGradeLevel(String text); @Override double calculateFleschKincaidGradeLevel(Text text); @Override double calculateFleschReadingEase(String text); @Override double calculateFleschReadingEase(Text text); @Override double calculateGunningFog(String text); @Override double calculateGunningFog(Text text); @Override double calculateSMOG(String text); @Override double calculateSMOG(Text text); @Override Text extractSentences(String input); @Override Locale getLocale();  }### Answer:
@Test public void testARI() throws IOException { log.info("testARI"); double ari = readabilityService.calculateARI(source1); log.debug("ARI {}", ari); assertTrue(ari > 16 && ari < 18); ari = readabilityService.calculateARI(source2); log.debug("ARI {}", ari); assertTrue(ari > 14 && ari < 15); ari = readabilityService.calculateARI(source3); log.debug("ARI {}", ari); assertTrue(ari > 6 && ari < 7); log.info("Tests successful!"); }