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    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.commons.csv.issues;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import org.apache.commons.csv.CSVFormat;
  import org.apache.commons.csv.CSVPrinter;
  import org.apache.commons.csv.QuoteMode;
  import org.junit.jupiter.api.Test;
  
  /**
   * JIRA: <a href="https://issues.apache.org/jira/browse/CSV-203">withNullString value is printed without quotes when
   * QuoteMode.ALL is specified</a>
   */
  public class JiraCsv203Test {
  
      @Test
      public void testQuoteModeAll() throws Exception {
          // @formatter:off
          final CSVFormat format = CSVFormat.EXCEL.builder()
                  .setNullString("N/A")
                  .setIgnoreSurroundingSpaces(true)
                  .setQuoteMode(QuoteMode.ALL)
                  .get();
          // @formatter:on
          final StringBuilder buffer = new StringBuilder();
          try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
              printer.printRecord(null, "Hello", null, "World");
          }
          assertEquals("\"N/A\",\"Hello\",\"N/A\",\"World\"\r\n", buffer.toString());
      }
  
      @Test
      public void testQuoteModeAllNonNull() throws Exception {
          // @formatter:off
          final CSVFormat format = CSVFormat.EXCEL.builder()
                  .setNullString("N/A")
                  .setIgnoreSurroundingSpaces(true)
                  .setQuoteMode(QuoteMode.ALL_NON_NULL)
                  .get();
          // @formatter:on
          final StringBuilder buffer = new StringBuilder();
          try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
              printer.printRecord(null, "Hello", null, "World");
          }
          assertEquals("N/A,\"Hello\",N/A,\"World\"\r\n", buffer.toString());
      }
  
      @Test
      public void testQuoteModeMinimal() throws Exception {
          // @formatter:off
          final CSVFormat format = CSVFormat.EXCEL.builder()
                  .setNullString("N/A")
                  .setIgnoreSurroundingSpaces(true)
                  .setQuoteMode(QuoteMode.MINIMAL)
                  .get();
          // @formatter:on
          final StringBuilder buffer = new StringBuilder();
          try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
              printer.printRecord(null, "Hello", null, "World");
          }
          assertEquals("N/A,Hello,N/A,World\r\n", buffer.toString());
      }
  
      @Test
      public void testQuoteModeNonNumeric() throws Exception {
          // @formatter:off
          final CSVFormat format = CSVFormat.EXCEL.builder()
                  .setNullString("N/A")
                  .setIgnoreSurroundingSpaces(true)
                  .setQuoteMode(QuoteMode.NON_NUMERIC)
                  .get();
          // @formatter:on
          final StringBuilder buffer = new StringBuilder();
          try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
              printer.printRecord(null, "Hello", null, "World");
          }
          assertEquals("N/A,\"Hello\",N/A,\"World\"\r\n", buffer.toString());
      }
  
      @Test
      public void testWithEmptyValues() throws Exception {
         // @formatter:off
         final CSVFormat format = CSVFormat.EXCEL.builder()
                 .setNullString("N/A")
                 .setIgnoreSurroundingSpaces(true)
                 .setQuoteMode(QuoteMode.ALL)
                 .get();
         // @formatter:on
         final StringBuilder buffer = new StringBuilder();
         try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
             printer.printRecord("", "Hello", "", "World");
             // printer.printRecord(new Object[] { null, "Hello", null, "World" });
         }
         assertEquals("\"\",\"Hello\",\"\",\"World\"\r\n", buffer.toString());
     }
 
     @Test
     public void testWithoutNullString() throws Exception {
         // @formatter:off
         final CSVFormat format = CSVFormat.EXCEL.builder()
                 //.setNullString("N/A")
                 .setIgnoreSurroundingSpaces(true)
                 .setQuoteMode(QuoteMode.ALL)
                 .get();
         // @formatter:on
         final StringBuilder buffer = new StringBuilder();
         try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
             printer.printRecord(null, "Hello", null, "World");
         }
         assertEquals(",\"Hello\",,\"World\"\r\n", buffer.toString());
     }
 
     @Test
     public void testWithoutQuoteMode() throws Exception {
         // @formatter:off
         final CSVFormat format = CSVFormat.EXCEL.builder()
                 .setNullString("N/A")
                 .setIgnoreSurroundingSpaces(true)
                 .get();
         // @formatter:on
         final StringBuilder buffer = new StringBuilder();
         try (CSVPrinter printer = new CSVPrinter(buffer, format)) {
             printer.printRecord(null, "Hello", null, "World");
         }
         assertEquals("N/A,Hello,N/A,World\r\n", buffer.toString());
     }
 }