DateGeneratorTest.java

/*
 * Rapid Beans Framework: DateGeneratorTest.java
 * 
 * created on 14.01.2007
 * 
 * (c) Martin Bluemel, 2007
 */
package org.rapidbeans.domain.math;

import java.text.DateFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Date;
import java.util.Locale;

import junit.framework.TestCase;

/**
 * 
 * @author Martin Bluemel
 * 
 */
public class DateGeneratorTest extends TestCase {

	/**
	 * Date formatter.
	 */
	static final DateFormat DFDATE = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.GERMAN);

	/**
	 * Date formatter.
	 */
	static final DateFormat DFTIME = DateFormat
			.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.GERMAN);

	// /**
	// * Date formatter.
	// */
	// static final DateFormat DFTIMELONG = DateFormat.getDateTimeInstance(
	// DateFormat.MEDIUM, DateFormat.LONG, Locale.GERMAN);

	/**
	 * normal case.
	 * 
	 * @throws ParseException
	 *             in case of dateparsing problems
	 */
	public void testGenerateNormal() throws ParseException {
		DateGenerator testGenerator = new DateGenerator();
		ArrayList<Date> dates = testGenerator.generateDays(DFDATE.parse("11.11.2005"), DFDATE.parse("15.11.2005"));
		assertNotNull(dates);
		assertEquals(5, dates.size());
		assertEquals(DFDATE.parse("11.11.2005"), dates.get(0));
		assertEquals(DFDATE.parse("12.11.2005"), dates.get(1));
		assertEquals(DFDATE.parse("13.11.2005"), dates.get(2));
		assertEquals(DFDATE.parse("14.11.2005"), dates.get(3));
		assertEquals(DFDATE.parse("15.11.2005"), dates.get(4));
	}

	/**
	 * boundary condition.
	 * 
	 * @throws ParseException
	 *             in case of dateparsing problems
	 */
	public void testGenerateFromEqualsTo() throws ParseException {
		DateGenerator testGenerator = new DateGenerator();
		ArrayList<Date> dates = testGenerator.generateDays(DFDATE.parse("11.11.2005"), DFDATE.parse("11.11.2005"));
		assertNotNull(dates);
		assertEquals(1, dates.size());
		assertEquals(DFDATE.parse("11.11.2005"), dates.get(0));
	}

	/**
	 * robustness test.
	 * 
	 * @throws ParseException
	 *             in case of dateparsing problems
	 */
	public void testGenerateInputDatesNotExact() throws ParseException {
		DateGenerator testGenerator = new DateGenerator();
		ArrayList<Date> dates = testGenerator.generateDays(DFTIME.parse("11.11.2005 23:59:59"),
				DFTIME.parse("15.11.2005 00:00:00"));
		assertNotNull(dates);
		assertEquals(5, dates.size());
		assertEquals(DFDATE.parse("11.11.2005"), dates.get(0));
		assertEquals(DFDATE.parse("12.11.2005"), dates.get(1));
		assertEquals(DFDATE.parse("13.11.2005"), dates.get(2));
		assertEquals(DFDATE.parse("14.11.2005"), dates.get(3));
		assertEquals(DFDATE.parse("15.11.2005"), dates.get(4));
	}

	/**
	 * failure condition test: from date smaller that to date.
	 * 
	 * @throws ParseException
	 *             in case of dateparsing problems
	 */
	public void testGenerateFromSmallerTo() throws ParseException {
		DateGenerator testGenerator = new DateGenerator();
		try {
			testGenerator.generateDays(DFDATE.parse("15.11.2005"), DFDATE.parse("11.11.2005"));
			fail("expected IllegalArgumentException");
		} catch (IllegalArgumentException e) {
			assertTrue(true);
		}
	}
}