### Question:
ReadabilityServiceImpl implements ReadabilityService { @Override public double calculateSMOG(String text) { return calculateSMOG(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 testSMOG() throws IOException { log.info("testSMOG"); double smog = readabilityService.calculateSMOG(source1); log.debug("SMOG {}", smog); assertTrue(smog > 14 && smog < 15); smog = readabilityService.calculateSMOG(source2); log.debug("SMOG {}", smog); assertTrue(smog > 14 && smog < 15); smog = readabilityService.calculateSMOG(source3); log.debug("SMOG {}", smog); assertTrue(smog > 7 && smog < 8); log.info("Tests successful!"); }