fix sonar warnings

commafeed-server/src/test/java/com/commafeed/backend/feed/parser/TextDirectionDetectorTest.java

@@ -6,7 +6,7 @@ import org.junit.jupiter.api.Test;
 class TextDirectionDetectorTest {
 
 	@Test
-	public void testEstimateDirection() {
+	void testEstimateDirection() {
 		Assertions.assertEquals(TextDirectionDetector.Direction.LEFT_TO_RIGHT, TextDirectionDetector.detect(""));
 		Assertions.assertEquals(TextDirectionDetector.Direction.LEFT_TO_RIGHT, TextDirectionDetector.detect(" "));
 		Assertions.assertEquals(TextDirectionDetector.Direction.LEFT_TO_RIGHT, TextDirectionDetector.detect("! (...)"));

commafeed-server/src/test/java/com/commafeed/backend/opml/OPMLExporterTest.java

@@ -42,7 +42,7 @@ class OPMLExporterTest {
 	private final List<FeedSubscription> subscriptions = new ArrayList<>();
 
 	@BeforeEach
-	public void init() {
+	void init() {
 		user.setName("John Doe");
 
 		cat1.setId(1L);

commafeed-server/src/test/java/com/commafeed/backend/service/FeedEntryFilteringServiceTest.java

@@ -20,7 +20,7 @@ class FeedEntryFilteringServiceTest {
 	private FeedEntry entry;
 
 	@BeforeEach
-	public void init() {
+	void init() {
 		config = Mockito.mock(CommaFeedConfiguration.class, Mockito.RETURNS_DEEP_STUBS);
 		Mockito.when(config.feedRefresh().filteringExpressionEvaluationTimeout()).thenReturn(Duration.ofSeconds(30));
 

commafeed-server/src/test/java/com/commafeed/backend/service/UserServiceTest.java

@@ -48,7 +48,7 @@ class UserServiceTest {
 	private UserService userService;
 
 	@BeforeEach
-	public void init() {
+	void init() {
 		userService = new UserService(feedCategoryDAO, feedSubscriptionDAO, userDAO, userRoleDAO, userSettingsDAO,
 				passwordEncryptionService, commaFeedConfiguration, postLoginActivities);