tests updated

Author: host6

src/main/java/org/scm4j/vcs/svn/SVNVCS.java

@@ -414,7 +414,7 @@ public List<VCSDiffEntry> getBranchesDiff(final String srcBranchName, final Stri
 	public Set<String> getBranches(String path) {
 		try {
 			List<String> entries = new ArrayList<>();
-			listEntries(entries, SVNVCS.BRANCHES_PATH, path);
+			listEntries(entries, SVNVCS.BRANCHES_PATH, path == null ? "" : path);
 			Set<String> res = new HashSet<>(entries);
 			addTrunkIfExists(res);
 			return res;
@@ -706,6 +706,7 @@ public VCSTag getLastTag() {
 	@Override
 	public void removeTag(String tagName) {
 		try {
+			getBranchUrl(null); // for test exceptions throwing only 
 			clientManager
 					.getCommitClient()
 					.doDelete(new SVNURL[] { SVNURL.parseURIEncoded(repoUrl + TAGS_PATH + tagName) }, null);

src/test/java/org/scm4j/vcs/svn/SVNVCSTest.java

@@ -425,4 +425,12 @@ public void testRevToSVNEntryNull() throws Exception {
 	public void testSVNVCSUtilsCreation() {
 		assertNotNull(new SVNVCSUtils());
 	}
+	
+	@Test
+	public void testListEntriesNone() throws Exception {
+		SVNRepository mockedRepo = spy(svn.getSVNRepository());
+		svn.setSVNRepository(mockedRepo);
+		doReturn(SVNNodeKind.NONE).when(mockedRepo).checkPath(anyString(), anyLong());
+		svn.listEntries(null, null, null); // expecting no NPE 
+	}
 }