/*
    * 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 ParseInt processor.
   * 
   * @author Kasper B. Graversen
   * @author James Bassett
   */
  public class ParseIntTest {
  	
  	private static final int POSITIVE_VAL = 17;
  	private static final String POSITIVE_STRING = "17";
  	private static final int NEGATIVE_VAL = -43;
  	private static final String NEGATIVE_STRING = "-43";
  	
  	private CellProcessor processor;
  	private CellProcessor processorChain;
  	
  	/**
  	 * Sets up the processors for the test using all constructor combinations.
  	 */
  	@Before
  	public void setUp() {
  		processor = new ParseInt();
  		processorChain = new ParseInt(new IdentityTransform());
  	}
  	
  	/**
  	 * Tests unchained/chained execution with valid ints as input.
  	 */
  	@Test
  	public void testValidInts() {
  		// positive values
  		assertEquals(POSITIVE_VAL, processor.execute(POSITIVE_VAL, ANONYMOUS_CSVCONTEXT));
  		assertEquals(POSITIVE_VAL, processorChain.execute(POSITIVE_VAL, ANONYMOUS_CSVCONTEXT));
  		
  		// negative values
  		assertEquals(NEGATIVE_VAL, processor.execute(NEGATIVE_VAL, ANONYMOUS_CSVCONTEXT));
  		assertEquals(NEGATIVE_VAL, processorChain.execute(NEGATIVE_VAL, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests unchained/chained execution with valid int Strings as input.
  	 */
  	@Test
  	public void testValidIntStrings() {
  		// positive values
  		assertEquals(POSITIVE_VAL, processor.execute(POSITIVE_STRING, ANONYMOUS_CSVCONTEXT));
  		assertEquals(POSITIVE_VAL, processorChain.execute(POSITIVE_STRING, ANONYMOUS_CSVCONTEXT));
  		
  		// negative values
  		assertEquals(NEGATIVE_VAL, processor.execute(NEGATIVE_STRING, ANONYMOUS_CSVCONTEXT));
  		assertEquals(NEGATIVE_VAL, processorChain.execute(NEGATIVE_STRING, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests execution with an badly formatted String input (should throw an exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
  	public void testWithInvalidFormatString() {
  		processor.execute("123.45", ANONYMOUS_CSVCONTEXT);
  	}
  	
  	/**
  	 * Tests execution with a non Integer input (should throw an exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
  	public void testWithNonIntInput() {
  		processor.execute(1.23, ANONYMOUS_CSVCONTEXT);
  	}
  	
  	/**
  	 * Tests execution with a null input (should throw an Exception).
  	 */
  	@Test(expected = SuperCsvCellProcessorException.class)
 	public void testWithNull() {
 		processor.execute(null, ANONYMOUS_CSVCONTEXT);
 	}
 	
 }