/*
    * 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.constraint;
  
  import static org.junit.Assert.assertEquals;
  import static org.supercsv.SuperCsvTestUtils.ANONYMOUS_CSVCONTEXT;
  import static org.supercsv.cellprocessor.constraint.LMinMax.MAX_INTEGER;
  import static org.supercsv.cellprocessor.constraint.LMinMax.MIN_INTEGER;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.supercsv.cellprocessor.StrReplace;
  import org.supercsv.cellprocessor.ift.CellProcessor;
  import org.supercsv.exception.SuperCsvCellProcessorException;
  import org.supercsv.exception.SuperCsvConstraintViolationException;
  import org.supercsv.mock.IdentityTransform;
  
  /**
   * Tests the LMinMax constraint.
   * 
   * @author Kasper B. Graversen
   * @author James Bassett
   */
  public class LMinMaxTest {
  	
  	private CellProcessor processor;
  	private CellProcessor processorChain;
  	
  	/**
  	 * Sets up the processors for the test using all constructor combinations.
  	 */
  	@Before
  	public void setUp() {
  		processor = new LMinMax(MIN_INTEGER, MAX_INTEGER);
  		processorChain = new LMinMax(MIN_INTEGER, MAX_INTEGER, new IdentityTransform());
  	}
  	
  	/**
  	 * Tests unchained/chained execution with a long in the range.
  	 */
  	@Test
  	public void testValidLong() {
  		long input = 123L;
  		assertEquals(input, processor.execute(input, ANONYMOUS_CSVCONTEXT));
  		assertEquals(input, processorChain.execute(input, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests unchained/chained execution with a long String in the range (should be converted to a Long).
  	 */
  	@Test
  	public void testValidLongString() {
  		String input = "123";
  		Long expected = 123L;
  		assertEquals(expected, processor.execute(input, ANONYMOUS_CSVCONTEXT));
  		assertEquals(expected, processorChain.execute(input, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests unchained/chained execution with the minimum allowed value.
  	 */
  	@Test
  	public void testMinBoundary() {
  		long input = MIN_INTEGER;
  		assertEquals(input, processor.execute(input, ANONYMOUS_CSVCONTEXT));
  		assertEquals(input, processorChain.execute(input, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests unchained/chained execution with the maximum allowed value.
  	 */
  	@Test
  	public void testMaxBoundary() {
  		long input = MAX_INTEGER;
  		assertEquals(input, processor.execute(input, ANONYMOUS_CSVCONTEXT));
  		assertEquals(input, processorChain.execute(input, ANONYMOUS_CSVCONTEXT));
  	}
  	
  	/**
  	 * Tests that this processor can be chained after a StringCellProcessor.
  	 */
  	@Test
  	public void testChainedAfterStringCellProcessor() {
  		final CellProcessor chain = new StrReplace("zero", "0", new LMinMax(MIN_INTEGER, MAX_INTEGER));
  		assertEquals(0L, chain.execute("zero", ANONYMOUS_CSVCONTEXT));
  	}
 	
 	/**
 	 * Tests execution with a value less than the minimum (should throw an Exception).
 	 */
 	@Test(expected = SuperCsvConstraintViolationException.class)
 	public void testLessThanMin() {
 		long lessThanMin = MIN_INTEGER - 1L;
 		processor.execute(lessThanMin, ANONYMOUS_CSVCONTEXT);
 	}
 	
 	/**
 	 * Tests execution with a value greater than the maximum (should throw an Exception).
 	 */
 	@Test(expected = SuperCsvConstraintViolationException.class)
 	public void testGreaterThanMax() {
 		long greaterThanMax = MAX_INTEGER + 1L;
 		processor.execute(greaterThanMax, ANONYMOUS_CSVCONTEXT);
 	}
 	
 	/**
 	 * Tests execution with a String that can't be parsed to a Long (should throw an Exception).
 	 */
 	@Test(expected = SuperCsvCellProcessorException.class)
 	public void testWithNonLongString() {
 		processor.execute("not long!", ANONYMOUS_CSVCONTEXT);
 	}
 	
 	/**
 	 * Tests execution with a max < min (should throw an Exception).
 	 */
 	@Test(expected = IllegalArgumentException.class)
 	public void testWithInvalidMaxMin() {
 		new LMinMax(MAX_INTEGER, MIN_INTEGER);
 	}
 	
 	/**
 	 * Tests execution with a null input (should throw an Exception).
 	 */
 	@Test(expected = SuperCsvCellProcessorException.class)
 	public void testWithNull() {
 		processor.execute(null, ANONYMOUS_CSVCONTEXT);
 	}
 }