Make sure that JabRef#1681 is fixed

CHANGELOG.md

@@ -29,6 +29,7 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We fixed a few groups related issues:
   - "Remove entries from group" no longer removes entries from groups with similar names. [#2334](https://github.com/JabRef/jabref/issues/2334)
   - If an entry's group field contains 'a b' it is no longer considered a member the groups 'a', 'b', and 'a b'. [1873](https://github.com/JabRef/jabref/issues/1873)
+  - Reading and writing now works for groups that contain special escaped characters in their names. [1681](https://github.com/JabRef/jabref/issues/1681)
 - We fixed an issue which prevented JabRef from closing using the "Quit" menu command. [#2336](https://github.com/JabRef/jabref/issues/2336)
 - We fixed an issue where the file permissions of the .bib-file were changed upon saving [#2279](https://github.com/JabRef/jabref/issues/2279).
 - We fixed an issue which prevented that a database was saved successfully if JabRef failed to generate new BibTeX-keys [#2285](https://github.com/JabRef/jabref/issues/2285).

src/test/java/net/sf/jabref/logic/exporter/GroupSerializerTest.java

@@ -42,6 +42,14 @@ public void serializeSingleExplicitGroup() {
         assertEquals(Collections.singletonList("0 ExplicitGroup:myExplicitGroup;0;"), serialization);
     }
 
+    @Test
+    // For https://github.com/JabRef/jabref/issues/1681
+    public void serializeSingleExplicitGroupWithEscapedSlash() {
+        ExplicitGroup group = new ExplicitGroup("B{\\\"{o}}hmer", GroupHierarchyType.INDEPENDENT, ',');
+        List<String> serialization = groupSerializer.serializeTree(GroupTreeNode.fromGroup(group));
+        assertEquals(Collections.singletonList("0 ExplicitGroup:B{\\\\\"{o}}hmer;0;"), serialization);
+    }
+
     @Test
     public void serializeSingleSimpleKeywordGroup() {
         SimpleKeywordGroup group = new SimpleKeywordGroup("name", GroupHierarchyType.INDEPENDENT, "keywords", "test", false, ',', false);

src/test/java/net/sf/jabref/logic/importer/util/GroupsParserTest.java

@@ -0,0 +1,23 @@
+package net.sf.jabref.logic.importer.util;
+
+import net.sf.jabref.model.groups.AbstractGroup;
+import net.sf.jabref.model.groups.ExplicitGroup;
+import net.sf.jabref.model.groups.GroupHierarchyType;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class GroupsParserTest {
+
+    @Test
+    // For https://github.com/JabRef/jabref/issues/1681
+    public void fromStringParsesExplicitGroupWithEscapedCharacterInName() throws Exception {
+        ExplicitGroup expected = new ExplicitGroup("B{\\\"{o}}hmer", GroupHierarchyType.INDEPENDENT, ',');
+        AbstractGroup parsed = GroupsParser.fromString("ExplicitGroup:B{\\\\\"{o}}hmer;0;", ',');
+
+        assertEquals(expected, parsed);
+    }
+
+}