datetimetest.cpp

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//
// DateTimeTest.cpp
//
// $Id: //poco/1.2/Foundation/testsuite/src/DateTimeTest.cpp#2 $
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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//


#include "DateTimeTest.h"
#include "CppUnit/TestCaller.h"
#include "CppUnit/TestSuite.h"
#include "Poco/DateTime.h"
#include "Poco/Timestamp.h"
#include "Poco/Timespan.h"
#include "Poco/Exception.h"


using Poco::Timestamp;
using Poco::DateTime;
using Poco::Timespan;
using Poco::AssertionViolationException;


DateTimeTest::DateTimeTest(const std::string& name): CppUnit::TestCase(name)
{
}


DateTimeTest::~DateTimeTest()
{
}


void DateTimeTest::testTimestamp()
{
	Timestamp ts(0); // Unix epoch 1970-01-01 00:00:00 Thursday
	DateTime dt(ts);
	assert (dt.year() == 1970);
	assert (dt.month() == 1);
	assert (dt.day() == 1);
	assert (dt.hour() == 0);
	assert (dt.minute() == 0);
	assert (dt.second() == 0);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 4);
	assert (dt.julianDay() == 2440587.5);
	assert (dt.timestamp() == 0);

	ts = Timestamp::fromEpochTime(1000000000);
	dt = ts; // 2001-09-09 01:46:40 Sunday
	assert (dt.year() == 2001);
	assert (dt.month() == 9);
	assert (dt.day() == 9);
	assert (dt.hour() == 1);
	assert (dt.minute() == 46);
	assert (dt.second() == 40);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 0);
	assert (dt.timestamp().epochTime() == 1000000000);
	assertEqualDelta (dt.julianDay(), 2452161.574074, 0.000001);
}


void DateTimeTest::testJulian()
{
	DateTime dt(2440587.5); // unix epoch as Julian day
	assert (dt.year() == 1970);
	assert (dt.month() == 1);
	assert (dt.day() == 1);
	assert (dt.hour() == 0);
	assert (dt.minute() == 0);
	assert (dt.second() == 0);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 4);
	assert (dt.julianDay() == 2440587.5);
	assert (dt.timestamp() == 0);
	
	dt = 2299160.5; // 1582-10-15 00:00:00 (first day of Gregorian reform, UTC base)
	assert (dt.year() == 1582);
	assert (dt.month() == 10);
	assert (dt.day() == 15);
	assert (dt.hour() == 0);
	assert (dt.minute() == 0);
	assert (dt.second() == 0);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 5);
	assert (dt.julianDay() == 2299160.5);

	dt = 0.0; // -4713-11-24 12:00:00 (Gregorian date of Julian day reference)
	assert (dt.year() == -4713);
	assert (dt.month() == 11);
	assert (dt.day() == 24);
	assert (dt.hour() == 12);
	assert (dt.minute() == 0);
	assert (dt.second() == 0);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 1);
	assert (dt.julianDay() == 0);

    // Test that we can represent down to the microsecond.
    dt = DateTime(2010, 1, 31, 17, 30, 15, 800, 3);

    assert (dt.year() == 2010);
    assert (dt.month() == 1);
    assert (dt.day() == 31);
    assert (dt.hour() == 17);
    assert (dt.minute() == 30);
    assert (dt.second() == 15);
    assert (dt.millisecond() == 800);
    assert (dt.microsecond() == 3);
}


void DateTimeTest::testGregorian()
{
	DateTime dt(1970, 1, 1);
	assert (dt.year() == 1970);
	assert (dt.month() == 1);
	assert (dt.day() == 1);
	assert (dt.hour() == 0);
	assert (dt.minute() == 0);
	assert (dt.second() == 0);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 4);
	assert (dt.julianDay() == 2440587.5);
	assert (dt.timestamp() == 0);
	
	dt.assign(2001, 9, 9, 1, 46, 40);
	assert (dt.year() == 2001);
	assert (dt.month() == 9);
	assert (dt.day() == 9);
	assert (dt.hour() == 1);
	assert (dt.minute() == 46);
	assert (dt.second() == 40);
	assert (dt.millisecond() == 0);
	assert (dt.dayOfWeek() == 0);
	assert (dt.timestamp().epochTime() == 1000000000);
	assertEqualDelta (dt.julianDay(), 2452161.574074, 0.000001);
}


void DateTimeTest::testConversions()
{
	DateTime dt1(2005, 1, 28, 14, 24, 44, 234);
	Timestamp ts1 = dt1.timestamp();
	DateTime dt2(ts1);
	Timestamp ts2 = dt2.timestamp();
	DateTime dt3;
	dt3 = dt1;
	Timestamp ts3 = dt3.timestamp();
	DateTime dt4(dt2);
	Timestamp ts4 = dt4.timestamp();

	assert (ts1 == ts2);
	assert (ts2 == ts3);
	assert (ts3 == ts4);

	assert (dt2.year() == 2005);
	assert (dt2.month() == 1);
	assert (dt2.day() == 28);
	assert (dt2.hour() == 14);
	assert (dt2.minute() == 24);
	assert (dt2.second() == 44);
	assert (dt2.millisecond() == 234);
	assert (dt2.dayOfWeek() == 5);
}


void DateTimeTest::testStatics()
{
	assert (DateTime::isLeapYear(1984));
	assert (DateTime::isLeapYear(1988));
	assert (DateTime::isLeapYear(1992));
	assert (DateTime::isLeapYear(1996));
	assert (DateTime::isLeapYear(2000));
	assert (DateTime::isLeapYear(2400));
	assert (!DateTime::isLeapYear(1995));
	assert (!DateTime::isLeapYear(1998));
	assert (!DateTime::isLeapYear(2001));
	assert (!DateTime::isLeapYear(1800));
	assert (!DateTime::isLeapYear(1900));
	
	assert (DateTime::daysOfMonth(2000, 1) == 31);
	assert (DateTime::daysOfMonth(2000, 2) == 29);
	assert (DateTime::daysOfMonth(1999, 2) == 28);
}


void DateTimeTest::testCalcs()
{
	DateTime dt1(2005, 1, 1);
	assert (dt1.dayOfYear() == 1);
	assert (dt1.week(DateTime::MONDAY) == 0);
	dt1.assign(2005, 1, 3);
	assert (dt1.dayOfYear() == 3);
	assert (dt1.week(DateTime::MONDAY) == 1);
	dt1.assign(2005, 1, 9);
	assert (dt1.dayOfYear() == 9);
	assert (dt1.week(DateTime::MONDAY) == 1);
	dt1.assign(2005, 1, 10);
	assert (dt1.dayOfYear() == 10);
	assert (dt1.week(DateTime::MONDAY) == 2);
	dt1.assign(2005, 2, 1);
	assert (dt1.dayOfYear() == 32);
	assert (dt1.week(DateTime::MONDAY) == 5);
	dt1.assign(2005, 12, 31);
	assert (dt1.week(DateTime::MONDAY) == 52);
	dt1.assign(2007, 1, 1);
	assert (dt1.week(DateTime::MONDAY) == 1);
	dt1.assign(2007, 12, 31);
	assert (dt1.week(DateTime::MONDAY) == 53);
	
	// Jan 1 is Mon
	dt1.assign(2001, 1, 1);  
	assert (dt1.week() == 1);
	dt1.assign(2001, 1, 7);
	assert (dt1.week() == 1);
	dt1.assign(2001, 1, 8);
	assert (dt1.week() == 2);
	dt1.assign(2001, 1, 21);
	assert (dt1.week() == 3);
	dt1.assign(2001, 1, 22);
	assert (dt1.week() == 4);

	// Jan 1 is Tue
	dt1.assign(2002, 1, 1);
	assert (dt1.week() == 1);
	dt1.assign(2002, 1, 6);
	assert (dt1.week() == 1);
	dt1.assign(2002, 1, 7);
	assert (dt1.week() == 2);
	dt1.assign(2002, 1, 20);
	assert (dt1.week() == 3);
	dt1.assign(2002, 1, 21);
	assert (dt1.week() == 4);

	// Jan 1 is Wed
	dt1.assign(2003, 1, 1);
	assert (dt1.week() == 1);
	dt1.assign(2003, 1, 5);
	assert (dt1.week() == 1);
	dt1.assign(2003, 1, 6);
	assert (dt1.week() == 2);
	dt1.assign(2003, 1, 19);
	assert (dt1.week() == 3);
	dt1.assign(2003, 1, 20);
	assert (dt1.week() == 4);
	
	// Jan 1 is Thu
	dt1.assign(2004, 1, 1);
	assert (dt1.week() == 1);
	dt1.assign(2004, 1, 4);
	assert (dt1.week() == 1);
	dt1.assign(2004, 1, 5);
	assert (dt1.week() == 2);
	dt1.assign(2004, 1, 18);
	assert (dt1.week() == 3);
	dt1.assign(2004, 1, 19);
	assert (dt1.week() == 4);

	// Jan 1 is Fri
	dt1.assign(1999, 1, 1);
	assert (dt1.week() == 0);
	dt1.assign(1999, 1, 3);
	assert (dt1.week() == 0);
	dt1.assign(1999, 1, 4);
	assert (dt1.week() == 1);
	dt1.assign(1999, 1, 17);
	assert (dt1.week() == 2);
	dt1.assign(1999, 1, 18);
	assert (dt1.week() == 3);

	// Jan 1 is Sat
	dt1.assign(2000, 1, 1);
	assert (dt1.week() == 0);
	dt1.assign(2000, 1, 2);
	assert (dt1.week() == 0);
	dt1.assign(2000, 1, 3);
	assert (dt1.week() == 1);
	dt1.assign(2000, 1, 16);
	assert (dt1.week() == 2);
	dt1.assign(2000, 1, 17);
	assert (dt1.week() == 3);
	
	// Jan 1 is Sun
	dt1.assign(1995, 1, 1);
	assert (dt1.week() == 0);
	dt1.assign(1995, 1, 2);
	assert (dt1.week() == 1);
	dt1.assign(1995, 1, 3);
	assert (dt1.week() == 1);
	dt1.assign(1995, 1, 15);
	assert (dt1.week() == 2);
	dt1.assign(1995, 1, 16);
	assert (dt1.week() == 3);
}


void DateTimeTest::testAMPM()
{
	DateTime dt1(2005, 1, 1, 0, 15, 30);
	assert (dt1.isAM());
	assert (!dt1.isPM());
	assert (dt1.hourAMPM() == 12);
	
	dt1.assign(2005, 1, 1, 12, 15, 30);
	assert (!dt1.isAM());
	assert (dt1.isPM());
	assert (dt1.hourAMPM() == 12);

	dt1.assign(2005, 1, 1, 13, 15, 30);
	assert (!dt1.isAM());
	assert (dt1.isPM());
	assert (dt1.hourAMPM() == 1);
}


void DateTimeTest::testRelational()
{
    DateTime dt1(2005, 1, 1, 0, 15, 30);
    DateTime dt2(2005, 1, 2, 0, 15, 30);
    DateTime dt3(dt1);
	
    assert (dt1 < dt2);
    assert (dt1 <= dt2);
    assert (dt2 > dt1);
    assert (dt2 >= dt1);
    assert (dt1 != dt2);
    assert (!(dt1 == dt2));
	
    assert (dt1 == dt3);
    assert (!(dt1 != dt3));
    assert (dt1 >= dt3);
    assert (dt1 <= dt3);
    assert (!(dt1 > dt3));
    assert (!(dt1 < dt3));

    static const struct 
    {
        int year;
        int month;  
        int day;
    } values[] = 
    {
        {    1,  1,  1 }, 
        {   10,  4,  5 }, 
        {  100,  6,  7 },
        { 1000,  8,  9 }, 
        { 2000,  1, 31 }, 
        { 2002,  7,  4 },
        { 2002, 12, 31 }, 
        { 2003,  1,  1 }, 
        { 2003,  1,  2 },
        { 2003,  8,  5 }, 
        { 2003,  8,  6 }, 
        { 2003,  8,  7 },
        { 2004,  9,  3 }, 
        { 2004,  9,  4 }, 
    };

    const int num_values = sizeof values / sizeof *values;
    for (int i = 0; i < num_values; ++i) 
    {
        DateTime v;
        const DateTime& V = v;
        v.assign(values[i].year, values[i].month, values[i].day);
        for (int j = 0; j < num_values; ++j) 
        {
            DateTime u;  
            const DateTime& U = u;
            u.assign(values[j].year, values[j].month, values[j].day);

            loop_2_assert(i, j, j <  i == U <  V);
            loop_2_assert(i, j, j <= i == U <= V);
            loop_2_assert(i, j, j >= i == U >= V);
            loop_2_assert(i, j, j >  i == U >  V);
        }
    }
}


void DateTimeTest::testArithmetics()
{
    DateTime dt1(2005, 1, 1, 0, 15, 30);
    DateTime dt2(2005, 1, 2, 0, 15, 30);
	
    Timespan s = dt2 - dt1;
    assert (s.days() == 1);
	
    DateTime dt3 = dt1 + s;
    assert (dt3 == dt2);
	
    dt3 -= s;
    assert (dt3 == dt1);
    dt1 += s;
    assert (dt1 == dt2);

    static const struct 
    {
        int lineNum;		// source line number
        int year1;			// operand/result date1 year
        int month1;			// operand/result date1 month
        unsigned int day1;	// operand/result date1 day
        int numDays;		// operand/result 'int' number of days
        int year2;			// operand/result date2 year
        int month2;			// operand/result date2 month
        unsigned int day2;	// operand/result date2 day
    } data[] = 
    {
        //          - - - -first- - - -           - - - second - - - 
        //line no.  year   month   day   numDays  year   month   day