### Question:
RtcDefectAdapter implements DefectAdapter { @Override public boolean isValidId(long projectId, String id) { if (!RTC_ID_PATTERN.matcher(id).matches()) { return false; } try { final Integer parsedId = Integer.valueOf(id); log.trace("Parsed defect ID {} (logged for no 'Result of method not used' warning)", parsedId); return true; } catch (NumberFormatException e) { return false; } } @Autowired  RtcDefectAdapter(SettingService settingService,
                            RestTemplateBuilder restTemplateBuilder,
                            RtcDateTimeAdapter rtcDateTimeAdapter,
                            SettingProviderService settingProviderService); @Override List<Defect> getStatuses(long projectId, List<String> ids); @Override List<Defect> getChangedDefects(long projectId, Date since); @Override boolean isValidId(long projectId, String id); @Override String getIdFormatHint(long projectId); @Override String getCode(); @Override String getName(); @Override List<SettingDTO> getSettingDefinitions();  }### Answer:
@Test public void isValidId_should_work() { long anyProjectId = 42; assertThat(cut.isValidId(anyProjectId, "-2147483648")).isTrue(); assertThat(cut.isValidId(anyProjectId, "-1")).isTrue(); assertThat(cut.isValidId(anyProjectId, "0")).isTrue(); assertThat(cut.isValidId(anyProjectId, "1")).isTrue(); assertThat(cut.isValidId(anyProjectId, "2147483647")).isTrue(); assertThat(cut.isValidId(anyProjectId, "-100000000000")).isFalse(); assertThat(cut.isValidId(anyProjectId, "-2147483649")).isFalse(); assertThat(cut.isValidId(anyProjectId, "2147483648")).isFalse(); assertThat(cut.isValidId(anyProjectId, "10000000000")).isFalse(); assertThat(cut.isValidId(anyProjectId, " -42 ")).isFalse(); assertThat(cut.isValidId(anyProjectId, " 42")).isFalse(); assertThat(cut.isValidId(anyProjectId, "42 ")).isFalse(); assertThat(cut.isValidId(anyProjectId, "42not")).isFalse(); }