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Add a bunch of tests for legend grouping into columns
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nyalldawson committed Sep 10, 2016
1 parent 4d0453e commit 570e693
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62 changes: 62 additions & 0 deletions tests/src/core/testqgslegendrenderer.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,8 @@ class TestQgsLegendRenderer : public QObject
void testThreeColumns();
void testFilterByMap();
void testFilterByMapSameSymbol();
void testColumns_data();
void testColumns();
void testRasterBorder();
void testFilterByPolygon();
void testFilterByExpression();
Expand All @@ -131,6 +133,7 @@ class TestQgsLegendRenderer : public QObject
QgsVectorLayer* mVL3; // point
QgsRasterLayer* mRL;
QString mReport;
bool _testLegendColumns( int itemCount, int columnCount, const QString& testName );
};


Expand Down Expand Up @@ -459,6 +462,65 @@ void TestQgsLegendRenderer::testFilterByMapSameSymbol()
QgsMapLayerRegistry::instance()->removeMapLayer( vl4 );
}

bool TestQgsLegendRenderer::_testLegendColumns( int itemCount, int columnCount, const QString& testName )
{
QgsFillSymbol* sym = new QgsFillSymbol();
sym->setColor( Qt::cyan );

QgsLayerTreeGroup* root = new QgsLayerTreeGroup();

QList< QgsVectorLayer* > layers;
for ( int i = 1; i <= itemCount; ++i )
{
QgsVectorLayer* vl = new QgsVectorLayer( "Polygon", QString( "Layer %1" ).arg( i ), "memory" );
QgsMapLayerRegistry::instance()->addMapLayer( vl );
vl->setRenderer( new QgsSingleSymbolRenderer( sym->clone() ) );
root->addLayer( vl );
layers << vl;
}
delete sym;

QgsLayerTreeModel legendModel( root );
QgsLegendSettings settings;
settings.setColumnCount( columnCount );
_setStandardTestFont( settings, "Bold" );
_renderLegend( testName, &legendModel, settings );
bool result = _verifyImage( testName, mReport );

Q_FOREACH ( QgsVectorLayer* l, layers )
{
QgsMapLayerRegistry::instance()->removeMapLayer( l );
}
return result;
}

void TestQgsLegendRenderer::testColumns_data()
{
QTest::addColumn<QString>( "testName" );
QTest::addColumn<int>( "items" );
QTest::addColumn<int>( "columns" );

QTest::newRow( "2 items, 2 columns" ) << "legend_2_by_2" << 2 << 2;
QTest::newRow( "3 items, 2 columns" ) << "legend_3_by_2" << 3 << 2;
QTest::newRow( "4 items, 2 columns" ) << "legend_4_by_2" << 4 << 2;
QTest::newRow( "5 items, 2 columns" ) << "legend_5_by_2" << 5 << 2;
QTest::newRow( "3 items, 3 columns" ) << "legend_3_by_3" << 3 << 3;
QTest::newRow( "4 items, 3 columns" ) << "legend_4_by_3" << 4 << 3;
QTest::newRow( "5 items, 3 columns" ) << "legend_5_by_3" << 5 << 3;
QTest::newRow( "6 items, 3 columns" ) << "legend_6_by_3" << 6 << 3;
QTest::newRow( "7 items, 3 columns" ) << "legend_7_by_3" << 7 << 3;
}

void TestQgsLegendRenderer::testColumns()
{
//test rendering legend with different combinations of columns and items

QFETCH( QString, testName );
QFETCH( int, items );
QFETCH( int, columns );
QVERIFY( _testLegendColumns( items, columns, testName ) );
}

void TestQgsLegendRenderer::testRasterBorder()
{
QString testName = "legend_raster_border";
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