Add test to explain the issue when two abbreviations have different n…

…ames but the same key.

src/test/java/net/sf/jabref/logic/journals/JournalAbbreviationRepositoryTest.java

@@ -56,6 +56,17 @@ public void testDuplicates() {
         assertEquals(1, repository.size());
     }
 
+    @Test
+    public void testDuplicatesIsoOnly() {
+        JournalAbbreviationRepository repository = new JournalAbbreviationRepository();
+        repository.addEntry(new Abbreviation("Old Long Name", "L. N."));
+        repository.addEntry(new Abbreviation("New Long Name", "L. N."));
+        assertEquals(2, repository.size());
+
+        assertEquals("L N", repository.getNextAbbreviation("L. N.").orElse("WRONG"));
+        assertEquals("New Long Name", repository.getNextAbbreviation("L N").orElse("WRONG"));
+    }
+
     @Test
     public void testDuplicateKeys() {
         JournalAbbreviationRepository repository = new JournalAbbreviationRepository();
@@ -70,12 +81,4 @@ public void testDuplicateKeys() {
         assertEquals("Long Name = LA. N.", repository.getAbbreviations().first().toPropertiesLine());
     }
 
-    @Test
-    public void testParsing() {
-        JournalAbbreviationRepository repository = new JournalAbbreviationRepository();
-        repository.readJournalListFromResource(Abbreviations.JOURNALS_FILE_BUILTIN);
-        repository.readJournalListFromResource(Abbreviations.JOURNALS_IEEE_INTERNAL_LIST);
-        assertTrue(!repository.getAbbreviations().isEmpty());
-    }
-
 }