code: /*
   * Copyright (c) 2017-2018 The Regents of the University of California
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   * 1. Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package edu.berkeley.cs.jqf.examples.jdk;
  
  import java.text.DateFormat;
  import java.text.SimpleDateFormat;
  import java.time.DateTimeException;
  import java.time.LocalDateTime;
  import java.time.format.DateTimeFormatter;
  import java.time.format.DateTimeParseException;
  import java.util.Date;
  
  import com.pholser.junit.quickcheck.generator.InRange;
  import edu.berkeley.cs.jqf.fuzz.Fuzz;
  import edu.berkeley.cs.jqf.fuzz.JQF;
  import org.junit.Assert;
  import org.junit.Assume;
  import org.junit.runner.RunWith;
  
  /**
   * @author Rohan Padhye
   */
  @RunWith(JQF.class)
  public class DateFormatterTest {
  
      @Fuzz
      public void fuzzSimple(Date date, String format) throws IllegalArgumentException {
          // Create a formatter using the input format
          DateFormat df = new SimpleDateFormat(format);
          // Serialize a Date object to a String
          try {
              df.format(date);
          } catch (ArrayIndexOutOfBoundsException e) {
              Assume.assumeNoException(e);
          }
      }
  
      @Fuzz
      public void fuzzLocalDateTime(String date, String pattern) throws IllegalArgumentException, DateTimeParseException {
          LocalDateTime.parse(date, DateTimeFormatter.ofPattern(pattern));
      }
  
      @Fuzz
      public void testLocalDateTimeSerialization(@InRange(minInt=0) int year,
                                                 @InRange(minInt=1, maxInt=12) int month,
                                                 @InRange(minInt=1, maxInt=31) int dayOfMonth,
                                                 @InRange(minInt=0, maxInt=23) int hour,
                                                 @InRange(minInt=0, maxInt=59) int minute,
                                                 @InRange(minInt=0, maxInt=59) int second) {
          LocalDateTime ldt1 = null, ldt2;
          String s1, s2;
          try {
              ldt1 = LocalDateTime.of(year, month, dayOfMonth, hour, minute, second);
          } catch (DateTimeException e) {
              Assume.assumeNoException(e);
          }
  
          s1 = ldt1.format(DateTimeFormatter.ISO_DATE_TIME);
          ldt2 = LocalDateTime.parse(s1);
          s2 = ldt2.format(DateTimeFormatter.ISO_DATE_TIME);
  
          Assert.assertEquals(s1, s2);
  
      }
  
      @Fuzz
      public void testLocalDateTimeSerialization2(String s) {
          LocalDateTime ldt1 = null, ldt2;
          String s1, s2;
          try {
              ldt1 = LocalDateTime.parse(s);
          } catch (DateTimeException e) {
              return;
          }
  
          s1 = ldt1.format(DateTimeFormatter.ISO_DATE_TIME);
          ldt2 = LocalDateTime.parse(s1);
          s2 = ldt2.format(DateTimeFormatter.ISO_DATE_TIME);
  
          Assert.assertEquals(s1, s2);
  
      }
  }
  