Add test that documents behavior of multiple iterators over the same CSVParser.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1513228 13f79535-47bb-0310-9956-ffa450edef68

src/test/java/org/apache/commons/csv/CSVParserTest.java

@@ -488,6 +488,24 @@ public class CSVParserTest {
         }
     }
 
+    @Test // TODO this may lead to strange behavior, throw an exception if iterator() has already been called?
+    public void testMultipleIterators() throws Exception {
+        CSVParser parser = CSVParser.parse("a,b,c" + CR + "d,e,f", CSVFormat.DEFAULT);
+
+        Iterator<CSVRecord> itr1 = parser.iterator();
+        Iterator<CSVRecord> itr2 = parser.iterator();
+
+        CSVRecord first = itr1.next();
+        assertEquals("a", first.get(0));
+        assertEquals("b", first.get(1));
+        assertEquals("c", first.get(2));
+
+        CSVRecord second = itr2.next();
+        assertEquals("d", second.get(0));
+        assertEquals("e", second.get(1));
+        assertEquals("f", second.get(2));
+    }
+
     @Test
     public void testHeader() throws Exception {
         final Reader in = new StringReader("a,b,c\n1,2,3\nx,y,z");