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==QDate and QLocale==

<source lang="cpp">
Foundations of Qt Development\Chapter10\locales\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QApplication>
#include <QLocale>
#include <QDate>
#include <QTime>
#include <QString>
#include <QtDebug>
void printDates( QLocale loc )
{
QLocale::setDefault( loc );
QDate d1( 2006, 10, 12 );
QDate d2( 2006, 01, 31 );
QDate d3( 2006, 06, 06 );

qDebug() << "short";
qDebug() << loc.toString( d1, QLocale::ShortFormat );
qDebug() << loc.toString( d2, QLocale::ShortFormat );
qDebug() << loc.toString( d3, QLocale::ShortFormat );
qDebug() << "long";
qDebug() << loc.toString( d1, QLocale::LongFormat );
qDebug() << loc.toString( d2, QLocale::LongFormat );
qDebug() << loc.toString( d3, QLocale::LongFormat );
qDebug() << "default";
qDebug() << loc.toString( d1 );
qDebug() << loc.toString( d2 );
qDebug() << loc.toString( d3 );
}
void printTimes( QLocale loc )
{
QLocale::setDefault( loc );

QTime t1( 6, 15, 45 );
QTime t2( 12, 00, 00 );
QTime t3( 18, 20, 25 );

qDebug() << "short";
qDebug() << loc.toString( t1, QLocale::ShortFormat );
qDebug() << loc.toString( t2, QLocale::ShortFormat );
qDebug() << loc.toString( t3, QLocale::ShortFormat );

qDebug() << "long";
qDebug() << loc.toString( t1, QLocale::LongFormat );
qDebug() << loc.toString( t2, QLocale::LongFormat );
qDebug() << loc.toString( t3, QLocale::LongFormat );
qDebug() << "default";
qDebug() << loc.toString( t1 );
qDebug() << loc.toString( t2 );
qDebug() << loc.toString( t3 );
}
void printValues( QLocale loc )
{
QLocale::setDefault( loc );

double v1 = 3.1415;
double v2 = 31415;
double v3 = 1000.001;

qDebug() << loc.toString( v1 );
qDebug() << loc.toString( v2 );
qDebug() << loc.toString( v3 );
}
int main( int argc, char **argv )
{
QApplication app( argc, argv );

qDebug() << "Dates";
qDebug() << "Swedish";
printDates( QLocale( QLocale::Swedish, QLocale::Sweden ) );
qDebug() << "US English";
printDates( QLocale( QLocale::English, QLocale::UnitedStates ) );
qDebug() << "Times";
qDebug() << "Swedish";
printTimes( QLocale( QLocale::Swedish, QLocale::Sweden ) );
qDebug() << "US English";
printTimes( QLocale( QLocale::English, QLocale::UnitedStates ) );
qDebug() << "Values";
qDebug() << "Swedish";
printValues( QLocale( QLocale::Swedish, QLocale::Sweden ) );
qDebug() << "US English";
printValues( QLocale( QLocale::English, QLocale::UnitedStates ) );
}

</source>

==Qt class test==

<source lang="cpp">

Foundations of Qt Development\Chapter16\classtest\datetest.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QtTest>
#include <QDate>
#include "datetest.h"
void DateTest::testAddDay()
{
QDate date( 1979, 5, 16 );
QCOMPARE( date.year(), 1979 );
QCOMPARE( date.month(), 5 );
QCOMPARE( date.day(), 16 );

QDate next = date.addDays( 1 );
QCOMPARE( next.year(), 1979 );
QCOMPARE( next.month(), 5 );
QCOMPARE( next.day(), 17 );

next = date.addDays( 20 );
QCOMPARE( next.year(), 1979 );
QCOMPARE( next.month(), 6 );
QCOMPARE( next.day(), 5 );
next = date.addDays( 366 );
QCOMPARE( next.year(), 1980 );
QCOMPARE( next.month(), 5 );
QCOMPARE( next.day(), 16 );
}
void DateTest::testAddMonth()
{
QDate date( 1973, 8, 16 );
QCOMPARE( date.year(), 1973 );
QCOMPARE( date.month(), 8 );
QCOMPARE( date.day(), 16 );

QDate next = date.addMonths( 1 );
QCOMPARE( next.year(), 1973 );
QCOMPARE( next.month(), 9 );
QCOMPARE( next.day(), 16 );

next = date.addMonths( 12 );
QCOMPARE( next.year(), 1974 );
QCOMPARE( next.month(), 8 );
QCOMPARE( next.day(), 16 );
}
void DateTest::testAddYear()
{
QDate date( 1979, 12, 31 );
QCOMPARE( date.year(), 1979 );
QCOMPARE( date.month(), 12 );
QCOMPARE( date.day(), 31 );

QDate next = date.addYears( 28 );
QCOMPARE( next.year(), 2007 );
QCOMPARE( next.month(), 12 );
QCOMPARE( next.day(), 31 );
}
void DateTest::testValid()
{
QDate date;

date = QDate();
QVERIFY( !date.isValid() );

date = QDate( 1979, 5, 16 );
QVERIFY( date.isValid() );
date = QDate( 1980, 2, 29 );
QVERIFY( date.isValid() );

date = QDate( 1979, 2, 29 );
QVERIFY( !date.isValid() );
}

Foundations of Qt Development\Chapter16\classtest\datetest.h
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef DATETEST_H
#define DATETEST_H
#include <QObject>
class DateTest : public QObject
{
Q_OBJECT

private slots:
void testAddDay();
void testAddMonth();
void testAddYear();
void testValid();
};
#endif // DATETEST_H

Foundations of Qt Development\Chapter16\classtest\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QtTest>
#include "datetest.h"
QTEST_MAIN( DateTest )

</source>

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