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testqgsmaplayer.cpp
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testqgsmaplayer.cpp
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/***************************************************************************
testqgsvectorfilewriter.cpp
--------------------------------------
Date : Sun Sep 16 12:22:54 AKDT 2007
Copyright : (C) 2007 by Gary E. Sherman
Email : sherman at mrcc dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgstest.h"
#include <QObject>
#include <QString>
#include <QStringList>
#include <QApplication>
#include <QFileInfo>
#include <QDir>
//qgis includes...
#include <qgsmaplayer.h>
#include <qgsvectorlayer.h>
#include <qgsapplication.h>
#include <qgsproviderregistry.h>
#include "qgsvectorlayerref.h"
#include "qgsmaplayerlistutils.h"
class TestSignalReceiver : public QObject
{
Q_OBJECT
public:
TestSignalReceiver()
: QObject( 0 )
, blendMode( QPainter::CompositionMode_SourceOver )
{}
QPainter::CompositionMode blendMode;
public slots:
void onBlendModeChanged( const QPainter::CompositionMode blendMode )
{
this->blendMode = blendMode;
}
};
/** \ingroup UnitTests
* This is a unit test for the QgsMapLayer class.
*/
class TestQgsMapLayer : public QObject
{
Q_OBJECT
public:
TestQgsMapLayer()
: mpLayer( 0 )
{}
private slots:
void initTestCase();// will be called before the first testfunction is executed.
void cleanupTestCase();// will be called after the last testfunction was executed.
void init(); // will be called before each testfunction is executed.
void cleanup(); // will be called after every testfunction.
void isValid();
void setBlendMode();
void isInScaleRange_data();
void isInScaleRange();
void isInScaleRange2();
void layerRef();
void layerRefListUtils();
private:
QgsVectorLayer *mpLayer = nullptr;
};
void TestQgsMapLayer::initTestCase()
{
//
// Runs once before any tests are run
//
// init QGIS's paths - true means that all path will be inited from prefix
QgsApplication::init();
QgsApplication::initQgis();
QgsApplication::showSettings();
}
void TestQgsMapLayer::init()
{
//create some objects that will be used in all tests...
//create a map layer that will be used in all tests...
QString myFileName( TEST_DATA_DIR ); //defined in CmakeLists.txt
myFileName = myFileName + "/points.shp";
QFileInfo myMapFileInfo( myFileName );
mpLayer = new QgsVectorLayer( myMapFileInfo.filePath(),
myMapFileInfo.completeBaseName(), QStringLiteral( "ogr" ) );
QgsProject::instance()->addMapLayer( mpLayer );
}
void TestQgsMapLayer::cleanup()
{
QgsProject::instance()->removeAllMapLayers();
}
void TestQgsMapLayer::cleanupTestCase()
{
QgsApplication::exitQgis();
}
void TestQgsMapLayer::isValid()
{
QVERIFY( mpLayer->isValid() );
}
void TestQgsMapLayer::setBlendMode()
{
TestSignalReceiver receiver;
QObject::connect( mpLayer, SIGNAL( blendModeChanged( const QPainter::CompositionMode ) ),
&receiver, SLOT( onBlendModeChanged( const QPainter::CompositionMode ) ) );
QCOMPARE( int( receiver.blendMode ), 0 );
mpLayer->setBlendMode( QPainter::CompositionMode_Screen );
// check the signal has been correctly emitted
QCOMPARE( receiver.blendMode, QPainter::CompositionMode_Screen );
// check accessor
QCOMPARE( mpLayer->blendMode(), QPainter::CompositionMode_Screen );
}
void TestQgsMapLayer::isInScaleRange_data()
{
QTest::addColumn<double>( "scale" );
QTest::addColumn<bool>( "isInScale" );
QTest::newRow( "in the middle" ) << 3000.0 << true;
QTest::newRow( "too low" ) << 1000.0 << false;
QTest::newRow( "too high" ) << 6000.0 << false;
QTest::newRow( "max is not inclusive" ) << 5000.0 << false;
QTest::newRow( "min is inclusive" ) << 2500.0 << true;
QTest::newRow( "min is inclusive even with conversion errors" ) << static_cast< double >( 1.0f / ( ( float )1.0 / 2500.0 ) ) << true;
}
void TestQgsMapLayer::isInScaleRange()
{
QFETCH( double, scale );
QFETCH( bool, isInScale );
mpLayer->setMinimumScale( 2500.0 );
mpLayer->setMaximumScale( 5000.0 );
mpLayer->setScaleBasedVisibility( true );
QCOMPARE( mpLayer->isInScaleRange( scale ), isInScale );
//always in scale range if scale based visibility is false
mpLayer->setScaleBasedVisibility( false );
QCOMPARE( mpLayer->isInScaleRange( scale ), true );
}
void TestQgsMapLayer::isInScaleRange2()
{
mpLayer->setMinimumScale( 5000.0 );
mpLayer->setMaximumScale( 0.0 );
mpLayer->setScaleBasedVisibility( true );
QVERIFY( !mpLayer->isInScaleRange( 1000 ) );
QVERIFY( !mpLayer->isInScaleRange( 1 ) );
QVERIFY( !mpLayer->isInScaleRange( 4999 ) );
QVERIFY( mpLayer->isInScaleRange( 5001 ) );
QVERIFY( mpLayer->isInScaleRange( 15000 ) );
mpLayer->setMinimumScale( 0.0 );
mpLayer->setMaximumScale( 5000.0 );
mpLayer->setScaleBasedVisibility( true );
QVERIFY( mpLayer->isInScaleRange( 1000 ) );
QVERIFY( mpLayer->isInScaleRange( 1 ) );
QVERIFY( mpLayer->isInScaleRange( 4999 ) );
QVERIFY( !mpLayer->isInScaleRange( 5001 ) );
QVERIFY( !mpLayer->isInScaleRange( 15000 ) );
}
void TestQgsMapLayer::layerRef()
{
// construct from layer
QgsVectorLayerRef ref( mpLayer );
QCOMPARE( ref.get(), mpLayer );
QCOMPARE( ref.layer.data(), mpLayer );
QCOMPARE( ref.layerId, mpLayer->id() );
QCOMPARE( ref.name, QStringLiteral( "points" ) );
QCOMPARE( ref.source, mpLayer->publicSource() );
QCOMPARE( ref.provider, QStringLiteral( "ogr" ) );
// bool operator
QVERIFY( ref );
// -> operator
QCOMPARE( ref->id(), mpLayer->id() );
// verify that layer matches layer
QVERIFY( ref.layerMatchesSource( mpLayer ) );
// create a weak reference
QgsVectorLayerRef ref2( mpLayer->id(), QStringLiteral( "points" ), mpLayer->publicSource(), QStringLiteral( "ogr" ) );
QVERIFY( !ref2 );
QVERIFY( !ref2.get() );
QVERIFY( !ref2.layer.data() );
QCOMPARE( ref2.layerId, mpLayer->id() );
QCOMPARE( ref2.name, QStringLiteral( "points" ) );
QCOMPARE( ref2.source, mpLayer->publicSource() );
QCOMPARE( ref2.provider, QStringLiteral( "ogr" ) );
// verify that weak reference matches layer
QVERIFY( ref2.layerMatchesSource( mpLayer ) );
// resolve layer using project
QCOMPARE( ref2.resolve( QgsProject::instance() ), mpLayer );
QVERIFY( ref2 );
QCOMPARE( ref2.get(), mpLayer );
QCOMPARE( ref2.layer.data(), mpLayer );
QCOMPARE( ref2.layerId, mpLayer->id() );
QCOMPARE( ref2.name, QStringLiteral( "points" ) );
QCOMPARE( ref2.source, mpLayer->publicSource() );
QCOMPARE( ref2.provider, QStringLiteral( "ogr" ) );
// setLayer
QgsVectorLayerRef ref3;
QVERIFY( !ref3.get() );
ref3.setLayer( mpLayer );
QCOMPARE( ref3.get(), mpLayer );
QCOMPARE( ref3.layer.data(), mpLayer );
QCOMPARE( ref3.layerId, mpLayer->id() );
QCOMPARE( ref3.name, QStringLiteral( "points" ) );
QCOMPARE( ref3.source, mpLayer->publicSource() );
QCOMPARE( ref3.provider, QStringLiteral( "ogr" ) );
// weak resolve
QgsVectorLayerRef ref4( QStringLiteral( "badid" ), QStringLiteral( "points" ), mpLayer->publicSource(), QStringLiteral( "ogr" ) );
QVERIFY( !ref4 );
QVERIFY( !ref4.resolve( QgsProject::instance() ) );
QCOMPARE( ref4.resolveWeakly( QgsProject::instance() ), mpLayer );
QCOMPARE( ref4.get(), mpLayer );
QCOMPARE( ref4.layer.data(), mpLayer );
QCOMPARE( ref4.layerId, mpLayer->id() );
QCOMPARE( ref4.name, QStringLiteral( "points" ) );
QCOMPARE( ref4.source, mpLayer->publicSource() );
QCOMPARE( ref4.provider, QStringLiteral( "ogr" ) );
// try resolving a bad reference
QgsVectorLayerRef ref5( QStringLiteral( "badid" ), QStringLiteral( "points" ), mpLayer->publicSource(), QStringLiteral( "xxx" ) );
QVERIFY( !ref5.get() );
QVERIFY( !ref5.resolve( QgsProject::instance() ) );
QVERIFY( !ref5.resolveWeakly( QgsProject::instance() ) );
}
void TestQgsMapLayer::layerRefListUtils()
{
// conversion utils
QgsVectorLayer *vlA = new QgsVectorLayer( "Point", "a", "memory" );
QgsVectorLayer *vlB = new QgsVectorLayer( "Point", "b", "memory" );
QList<QgsMapLayer *> listRawSource;
listRawSource << vlA << vlB;
QList< QgsMapLayerRef > refs = _qgis_listRawToRef( listRawSource );
QCOMPARE( refs.at( 0 ).get(), vlA );
QCOMPARE( refs.at( 1 ).get(), vlB );
QList<QgsMapLayer *> raw = _qgis_listRefToRaw( refs );
QCOMPARE( raw, QList< QgsMapLayer *>() << vlA << vlB );
//remove layers
QgsVectorLayer *vlC = new QgsVectorLayer( "Point", "c", "memory" );
QgsVectorLayer *vlD = new QgsVectorLayer( "Point", "d", "memory" );
refs << QgsMapLayerRef( vlC ) << QgsMapLayerRef( vlD );
_qgis_removeLayers( refs, QList< QgsMapLayer *>() << vlB << vlD );
QCOMPARE( refs.size(), 2 );
QCOMPARE( refs.at( 0 ).get(), vlA );
QCOMPARE( refs.at( 1 ).get(), vlC );
}
QGSTEST_MAIN( TestQgsMapLayer )
#include "testqgsmaplayer.moc"