SeriesSalesServiceImpl: 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

@@ -147,7 +147,10 @@ public SeriesService getSeriesService() {
 
 	@Bean
 	public SeriesSalesService getSeriesSalesService() {
-		return new SeriesSalesServiceImpl(daoConfig.getSeriesSalesDao());
+		return new SeriesSalesServiceImpl(
+			LoggerFactory.getLogger(SeriesSalesServiceImpl.class),
+			daoConfig.getSeriesSalesDao()
+		);
 	}
 
 	@Bean

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

@@ -22,7 +22,6 @@
 import org.apache.commons.lang3.Validate;
 
 import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import org.springframework.transaction.annotation.Transactional;
 
@@ -38,8 +37,7 @@
 @RequiredArgsConstructor
 public class SeriesSalesServiceImpl implements SeriesSalesService {
 
-	private static final Logger LOG = LoggerFactory.getLogger(SeriesSalesServiceImpl.class);
-	
+	private final Logger log;
 	private final SeriesSalesDao seriesSalesDao;
 
 	@Override
@@ -73,7 +71,7 @@ public void add(AddSeriesSalesDto dto, Integer seriesId, Integer userId) {
 
 		seriesSalesDao.add(sale);
 
-		LOG.info("Sale for series #{} has been added by user #{}", seriesId, userId);
+		log.info("Sale for series #{} has been added by user #{}", seriesId, userId);
 	}
 
 }

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

@@ -17,6 +17,8 @@
  */
 package ru.mystamps.web.service
 
+import org.slf4j.helpers.NOPLogger
+
 import spock.lang.Specification
 import spock.lang.Unroll
 
@@ -30,7 +32,10 @@ import ru.mystamps.web.tests.DateUtils
 class SeriesSalesServiceImplTest extends Specification {
 
 	private final SeriesSalesDao seriesSalesDao = Mock()
-	private final SeriesSalesService service = new SeriesSalesServiceImpl(seriesSalesDao)
+	private final SeriesSalesService service = new SeriesSalesServiceImpl(
+		NOPLogger.NOP_LOGGER,
+		seriesSalesDao
+	)
 
 	private AddSeriesSalesForm form