Adding "von" part to Author's last name when exporting to MS Office 2…

…007 (#4725)

* Adding "von" part from Author's last name when exporting to MS Office
2007

Fixes #4655

* Adding "von" to Author's last name when exporting to MS Office 2007

Fixes #4655

src/main/java/org/jabref/logic/msbib/MsBibAuthor.java

@@ -48,7 +48,7 @@ public String getMiddleName() {
     }
 
     public String getLastName() {
-        return author.getLast().orElse(null);
+        return author.getLastOnly();
     }
 
     public String getFirstLast() {

src/test/java/org/jabref/logic/msbib/MsBibAuthorTest.java

@@ -44,4 +44,11 @@ public void testGetLastName() {
         MsBibAuthor msBibAuthor = new MsBibAuthor(author);
         assertEquals("Bach", msBibAuthor.getLastName());
     }
+
+    @Test
+    public void testGetVonAndLastName() {
+        Author author = new Author("John", null, "von", "Neumann", null);
+        MsBibAuthor msBibAuthor = new MsBibAuthor(author);
+        assertEquals("von Neumann", msBibAuthor.getLastName());
+    }
 }