### Question:
LogSettingsDiagnosticService implements Diagnostic { @Override public Map<DiagnosticAttribute, DiagnosticCallback> getDiagnosticData() { return new DiagnosticAttributeBuilder() .addDiagnosticAttribute(DiagnosticAttributeBuilder.LOG_SETTINGS, new DiagnosticCallback<Map<String, String>>() { @Override public Map<String, String> getDiagnosticAttributeValue() { Map<String, String> loggers = log4jSettingsService.getLoggers(); for (Map.Entry<String,String> entry : (Set<Map.Entry<String,String>>)(propertiesManagementService.entrySet())) { String key = entry.getKey(); if (key.startsWith(Log4jPropertyChanger.PROPERTY_PREFIX)) { loggers.put(Log4jPropertyChanger.parseKey(key), entry.getValue()); } } return generateLogSettingsWithDescription(loggers); } }) .addDiagnosticAttribute(DiagnosticAttributeBuilder.GLOBAL_PROPERTIES_LIST, new DiagnosticCallback<Map<String, String>>() { @Override public Map<String, String> getDiagnosticAttributeValue() { Map<String, String> globalPropertiesList = new HashMap<String, String>(); for (Map.Entry<String, String> entry : (Set<Map.Entry<String, String>>) (propertiesManagementService.entrySet())) { globalPropertiesList.put(entry.getKey(), entry.getValue()); } return globalPropertiesList; } }).build(); }  void setPropertiesManagementService(PropertiesManagementService propertiesManagementService); void setMessageSource(MessageSource messageSource); void setLog4jSettingsService(Log4jSettingsService log4jSettingsService); @Override Map<DiagnosticAttribute, DiagnosticCallback> getDiagnosticData();  }### Answer:
@Test public void testGetAllEventsNotModifiable() { Map<DiagnosticAttribute, DiagnosticCallback> resultDiagnosticData = logSettingsDiagnosticService.getDiagnosticData(); assertEquals(2, resultDiagnosticData.size()); assertEquals(4, ((Map)resultDiagnosticData.get(new DiagnosticAttributeImpl(DiagnosticAttributeBuilder.LOG_SETTINGS, null, null)).getDiagnosticAttributeValue()).size()); assertEquals("Value3", ((Map)resultDiagnosticData.get(new DiagnosticAttributeImpl(DiagnosticAttributeBuilder.LOG_SETTINGS, null, null)).getDiagnosticAttributeValue()).get("Log3")); assertEquals("Value1Updated", ((Map)resultDiagnosticData.get(new DiagnosticAttributeImpl(DiagnosticAttributeBuilder.LOG_SETTINGS, null, null)).getDiagnosticAttributeValue()).get("Log1")); }