/*
    * Copyright 2007 Kasper B. Graversen
    * 
    * Licensed 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
    * 
    *     http://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.supercsv.cellprocessor;
  
  import static org.junit.Assert.assertEquals;
  import static org.supercsv.SuperCsvTestUtils.ANONYMOUS_CSVCONTEXT;
  import static org.supercsv.SuperCsvTestUtils.date;
  
  import java.util.Date;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.supercsv.cellprocessor.ift.CellProcessor;
  import org.supercsv.exception.SuperCsvCellProcessorException;
  import org.supercsv.mock.IdentityTransform;
  
  /**
   * Tests the FmtDate processor.
   * 
   * @author Dominique De Vito
   * @author James Bassett
   */
  public class FmtDateTest {
  	
  	private static final String DATE_FORMAT = "dd/MM/yyyy";
  	private static final Date DATE = date(2011, 12, 25);
  	private static final String FORMATTED_DATE = "25/12/2011";
  	
  	private CellProcessor processor;
  	private CellProcessor processorChain;
  	
  	/**
  	 * Sets up the processors for the test using all constructor combinations.
  	 */
  	@Before
  	public void setUp() {
  		processor = new FmtDate(DATE_FORMAT);
  		processorChain = new FmtDate(DATE_FORMAT, new IdentityTransform());
  	}
  	
  	/**
  	 * Tests unchained/chained execution with a valid date.
  	 */
  	@Test
  	public void testWithValidDate() {
  		assertEquals(FORMATTED_DATE, processor.execute(DATE, ANONYMOUS_CSVCONTEXT));
  		assertEquals(FORMATTED_DATE, processorChain.execute(DATE, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests execution with a null input (should throw an Exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
  	public void testWithNull() {
  		processor.execute(null, ANONYMOUS_CSVCONTEXT);
  	}
  	
  	/**
  	 * Tests execution with a non-Date input (should throw an Exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
  	public void testWithNonDate() {
  		processor.execute(123, ANONYMOUS_CSVCONTEXT);
  	}
  	
  	/**
  	 * Tests execution with a invalid date format (should throw an Exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
  	public void testWithInvalidDateFormat() {
  		CellProcessor invalidDateFormatProcessor = new FmtDate("abcd");
  		invalidDateFormatProcessor.execute(DATE, ANONYMOUS_CSVCONTEXT);
  	}
  	
  	/**
  	 * Tests construction of the processor with a null date format (should throw an Exception).
  	 */
  	@Test(expected = NullPointerException.class)
  	public void testWithNullDateFormat() {
  		new FmtDate(null);
  	}
  }