/*
    * 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 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 Token processor.
   * 
   * @author Kasper B. Graversen
   * @author James Bassett
   */
  public class TokenTest {
  	
  	private static final String TOKEN = "foo";
  	private static final String REPLACEMENT = "bar";
  	private static final int TOKEN2 = 2;
  	private static final String REPLACEMENT2 = "two";
  	
  	private CellProcessor processor;
  	private CellProcessor processor2;
  	private CellProcessor processorChain;
  	private CellProcessor processorChain2;
  	
  	/**
  	 * Sets up the processors for the test using all constructor combinations.
  	 */
  	@Before
  	public void setUp() {
  		// foo -> bar
  		processor = new Token(TOKEN, REPLACEMENT);
  		processorChain = new Token(TOKEN, REPLACEMENT, new IdentityTransform());
  		
  		// 2 -> two
  		processor2 = new Token(TOKEN2, REPLACEMENT2);
  		processorChain2 = new Token(TOKEN2, REPLACEMENT2, new IdentityTransform());
  	}
  	
  	/**
  	 * Tests unchained/chained execution with valid input.
  	 */
  	@Test
  	public void testValidInput() {
  		// string input
  		assertEquals(REPLACEMENT, processor.execute(TOKEN, ANONYMOUS_CSVCONTEXT));
  		assertEquals(REPLACEMENT, processorChain.execute(TOKEN, ANONYMOUS_CSVCONTEXT));
  		
  		// int input
  		assertEquals(REPLACEMENT2, processor2.execute(TOKEN2, ANONYMOUS_CSVCONTEXT));
  		assertEquals(REPLACEMENT2, processorChain2.execute(TOKEN2, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests unchained/chained execution when the token is not found (should return input unchanged).
  	 */
  	@Test
  	public void testTokenNotFound() {
  		// expecting 'foo', not 2
  		assertEquals(TOKEN2, processor.execute(TOKEN2, ANONYMOUS_CSVCONTEXT));
  		assertEquals(TOKEN2, processorChain.execute(TOKEN2, ANONYMOUS_CSVCONTEXT));
  		
  		// expecting 2, not 'foo'
  		assertEquals(TOKEN, processor2.execute(TOKEN, ANONYMOUS_CSVCONTEXT));
  		assertEquals(TOKEN, processorChain2.execute(TOKEN, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests execution with a null input (should throw an Exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
  	public void testWithNull() {
  		processor.execute(null, ANONYMOUS_CSVCONTEXT);
  	}
  }