CronServiceImpl: use NOPLogger for unit tests to reduce output to console.

No functional changes.

Author: php-coder

src/main/java/ru/mystamps/web/config/ServicesConfig.java

@@ -77,6 +77,7 @@ public CollectionService getCollectionService() {
 	@Bean
 	public CronService getCronService() {
 		return new CronServiceImpl(
+			LoggerFactory.getLogger(CronServiceImpl.class),
 			getCategoryService(),
 			getCountryService(),
 			getCollectionService(),

src/main/java/ru/mystamps/web/service/CronServiceImpl.java

@@ -25,7 +25,6 @@
 import org.apache.commons.lang3.time.DateUtils;
 
 import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.transaction.annotation.Transactional;
@@ -43,8 +42,7 @@ public class CronServiceImpl implements CronService {
 	private static final String EVERY_DAY_AT_00_00 = "0 0 0 * * *";
 	private static final String EVERY_DAY_AT_00_30 = "0 30 0 * * *";
 
-	private static final Logger LOG = LoggerFactory.getLogger(CronServiceImpl.class);
-	
+	private final Logger log;
 	private final CategoryService categoryService;
 	private final CountryService countryService;
 	private final CollectionService collectionService;
@@ -122,12 +120,12 @@ public void purgeUsersActivations() {
 		Validate.validState(expiredActivations != null, "Expired activations must be non null");
 
 		if (expiredActivations.isEmpty()) {
-			LOG.info("Expired activations were not found.");
+			log.info("Expired activations were not found.");
 			return;
 		}
 
 		for (UsersActivationFullDto activation : expiredActivations) {
-			LOG.info(
+			log.info(
 				"Delete expired activation (key: {}, email: {}, created: {})",
 				activation.getActivationKey(),
 				activation.getEmail(),

src/test/groovy/ru/mystamps/web/service/CronServiceImplTest.groovy

@@ -17,6 +17,8 @@
  */
 package ru.mystamps.web.service
 
+import org.slf4j.helpers.NOPLogger
+
 import spock.lang.Specification
 
 import ru.mystamps.web.dao.dto.UsersActivationFullDto
@@ -35,6 +37,7 @@ class CronServiceImplTest extends Specification {
 	private final UsersActivationService usersActivationService = Mock()
 
 	private final CronService service = new CronServiceImpl(
+		NOPLogger.NOP_LOGGER,
 		categoryService,
 		countryService,
 		collectionService,