Add code and test for Quote.NONE

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1480499 13f79535-47bb-0310-9956-ffa450edef68

Author: sebbASF

src/main/java/org/apache/commons/csv/CSVPrinter.java

@@ -242,7 +242,9 @@ private void printAndQuote(final Object object, final CharSequence value,
             quote = !(object instanceof Number);
             break;
         case NONE:
-            throw new IllegalArgumentException("Not implemented yet");
+            // Use the existing escaping code
+            printAndEscape(value, offset, len);
+            return;
         case MINIMAL:
             if (len <= 0) {
                 // always quote an empty token that is the first

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

@@ -381,6 +381,17 @@ public void testDelimeterQuoted() throws IOException {
         printer.close();
     }
 
+    @Test
+    public void testDelimeterQuoteNONE() throws IOException {
+        final StringWriter sw = new StringWriter();
+        final CSVFormat format = CSVFormat.newBuilder().withEscape('!').withQuotePolicy(Quote.NONE).build();
+        final CSVPrinter printer = new CSVPrinter(sw, format);
+        printer.print("a,b,c");
+        printer.print("xyz");
+        assertEquals("a!,b!,c,xyz", sw.toString());
+        printer.close();
+    }
+
     @Test
     public void testEOLQuoted() throws IOException {
         final StringWriter sw = new StringWriter();