MathUtilsTest.java

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 *
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 * Copyright 2010 Vodafone Sales & Services Ltd.  All rights reserved.
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package com.vodafone360.people.tests.utils;

import static android.text.format.DateUtils.FORMAT_SHOW_DATE;
import static android.text.format.DateUtils.FORMAT_SHOW_YEAR;

import java.util.Calendar;
import java.util.GregorianCalendar;

import android.test.AndroidTestCase;
import android.text.format.DateUtils;

import com.vodafone360.people.utils.MathUtils;

/**
 * 
 * A test case class testing the MathUtils-class.
 *
 */
public class MathUtilsTest extends AndroidTestCase {
	
	/**
	 * 
	 * Tests the getValidatedBirthdate-method.
	 * 
	 */
	public void testGetValidatedBirthdate() {
		// we set a date older than todays date. this should return the old date instead of today's
		GregorianCalendar cal = MathUtils.getValidatedBirthdate(1970, Calendar.APRIL, 5);
		assertEquals(1970, cal.get(Calendar.YEAR));
		assertEquals(Calendar.APRIL, cal.get(Calendar.MONTH));
		assertEquals(5, cal.get(Calendar.DAY_OF_MONTH));
		cal = null;
		
		// we set a date younger than today's. this should result in today's date being returned
		Calendar today = Calendar.getInstance();
		cal = MathUtils.getValidatedBirthdate(today.get(Calendar.YEAR) + 200, Calendar.NOVEMBER, 5);
		assertEquals(today.get(Calendar.YEAR), cal.get(Calendar.YEAR));
		assertEquals(today.get(Calendar.MONTH), cal.get(Calendar.MONTH));
		assertEquals(today.get(Calendar.DAY_OF_MONTH), cal.get(Calendar.DAY_OF_MONTH));
		cal = null;
		
		// we set the day in the month may to the 32nd. this should result in June 1st.
		cal = MathUtils.getValidatedBirthdate(1970, Calendar.MAY, 32);
		assertEquals(1970, cal.get(Calendar.YEAR));
		assertEquals(Calendar.JUNE, cal.get(Calendar.MONTH));
		assertEquals(1, cal.get(Calendar.DAY_OF_MONTH));
		
		// test in the middle of 1916, should return the same date just fine.
		cal = MathUtils.getValidatedBirthdate(1916, Calendar.MAY, 1);
		assertEquals(1916, cal.get(Calendar.YEAR));
		assertEquals(Calendar.MAY, cal.get(Calendar.MONTH));
		assertEquals(1, cal.get(Calendar.DAY_OF_MONTH));
		
		// test at the beginning of 1916, should also be just fine
		cal = MathUtils.getValidatedBirthdate(1916, Calendar.JANUARY, 1);
		assertEquals(1916, cal.get(Calendar.YEAR));
		assertEquals(Calendar.JANUARY, cal.get(Calendar.MONTH));
		assertEquals(1, cal.get(Calendar.DAY_OF_MONTH));
		
		// test at the border of 1915, this should return 1916 but with the preferred date and month
		cal = MathUtils.getValidatedBirthdate(1915, Calendar.DECEMBER, 31);
		assertEquals(1916, cal.get(Calendar.YEAR));
		assertEquals(Calendar.DECEMBER, cal.get(Calendar.MONTH));
		assertEquals(31, cal.get(Calendar.DAY_OF_MONTH));
		
		// very low test, should return 1916 with the given month and day
		cal = MathUtils.getValidatedBirthdate(200, Calendar.MAY, 1);
		assertEquals(1916, cal.get(Calendar.YEAR));
		assertEquals(Calendar.MAY, cal.get(Calendar.MONTH));
		assertEquals(1, cal.get(Calendar.DAY_OF_MONTH));
	}
	
	/**
	 * 
	 * <p>Tests the formatDateTime-method in android.text.format.DateUtils which seems to be broken.
	 * NOTE: I will comment the code so that our unit-tests will run fine again!</p>
	 * 
	 * <p>Important prerequisite: Emulator or device must be set to the "English (UK)" local.</p>
	 *  
	 */
	public void testGoogleDateUtilsClass() {
		// TODO uncomment to test this properly
		
//		for (int year = 2030; year > 1890; year -= 1) {
//			GregorianCalendar cal = new GregorianCalendar(year, Calendar.MAY, 1);
//			String result = DateUtils.formatDateTime(getContext(), cal.getTimeInMillis(), 
//					FORMAT_SHOW_DATE | FORMAT_SHOW_YEAR);
//			
//			
//			if (year >= 1916) {
//				assertEquals("Assumption equals for year: " + year, "1 May " + year, result);
//			} else {
//				assertFalse("Assumption not equals for year: " + year, result.equals("1 May " + year));	
//			}
//		}
	}
}