add tests for styles - just for color ramp for now

tests/src/core/CMakeLists.txt

@@ -97,3 +97,4 @@ ADD_QGIS_TEST(rulebasedrenderertest testqgsrulebasedrenderer.cpp)
 ADD_QGIS_TEST(ziplayertest testziplayer.cpp)
 ADD_QGIS_TEST(dataitemtest testqgsdataitem.cpp)
 ADD_QGIS_TEST(composermaptest testqgscomposermap.cpp)
+ADD_QGIS_TEST(stylev2test testqgsstylev2.cpp)

tests/src/core/testqgsstylev2.cpp

@@ -0,0 +1,181 @@
+/***************************************************************************
+     testqgsstylev2.cpp
+     --------------------------------------
+    Date                 : Wed Aug  1 12:13:24 BRT 2012
+    Copyright            : (C) 2012 Etienne Tourigny and Tim Sutton
+    Email                : etourigny dot dev at gmail.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 <QtTest>
+#include <QObject>
+#include <QStringList>
+#include <QObject>
+#include <QApplication>
+#include <QFileInfo>
+
+//qgis includes...
+#include <qgsapplication.h>
+#include "qgsconfig.h"
+#include "qgslogger.h"
+#include "qgsvectorcolorrampv2.h"
+
+#include "qgsstylev2.h"
+
+/** \ingroup UnitTests
+ * This is a unit test to verify that styles are working correctly
+ */
+class TestStyleV2: public QObject
+{
+    Q_OBJECT;
+
+  private:
+
+    QgsStyleV2 *mStyle;
+
+    bool testValidColor( QgsVectorColorRampV2 *ramp, double value, QColor expected );
+
+  private slots:
+
+    // init / cleanup
+    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 initStyles();
+
+    void testCreateColorRamps();
+    void testLoadColorRamps();
+    void testSaveLoad();
+};
+
+
+// slots
+void TestStyleV2::initTestCase()
+{
+  // initialize with test directory so we don't mess with user's stuff
+  QgsApplication::init( QDir::homePath() + QString( "/.qgis_test" ) );
+  QgsApplication::initQgis();
+
+  // output test environment
+  QgsApplication::showSettings();
+
+  // Set up the QSettings environment
+  QCoreApplication::setOrganizationName( "QuantumGIS" );
+  QCoreApplication::setOrganizationDomain( "qgis.org" );
+  QCoreApplication::setApplicationName( "QGIS-TEST" );
+
+  // initialize with a clean style
+  QFile styleFile( QgsApplication::userStyleV2Path() );
+  if ( styleFile.exists() )
+  {
+    styleFile.remove();
+    QgsDebugMsg( "removed user style file " + styleFile.fileName() );
+  }
+  mStyle = QgsStyleV2::defaultStyle();
+  // mStyle->clear();
+}
+
+void TestStyleV2::cleanupTestCase()
+{
+  // don't save
+  // mStyle->save();
+  delete mStyle;
+}
+
+bool TestStyleV2::testValidColor( QgsVectorColorRampV2 *ramp, double value, QColor expected )
+{
+  QColor result = ramp->color( value );
+  if ( result != expected )
+  {
+    QWARN( QString( "value = %1 result = %2 expected = %3" ).arg( value ).arg( 
+           result.name() ).arg( expected.name() ).toLocal8Bit().data() );
+    return false;
+  }
+  return true;
+}
+
+void TestStyleV2::testCreateColorRamps()
+{
+  // gradient ramp
+  QgsVectorGradientColorRampV2* gradientRamp = new QgsVectorGradientColorRampV2( QColor( Qt::red ), QColor( Qt::blue ) );
+  QgsVectorGradientColorRampV2::StopsMap stops;
+  stops[ 0.5 ] = QColor( Qt::white );
+  gradientRamp->setStops( stops );
+  QVERIFY( mStyle->addColorRamp( "test_gradient", gradientRamp ) == true );
+
+  // random ramp
+  QgsVectorRandomColorRampV2* randomRamp = new QgsVectorRandomColorRampV2();
+  QVERIFY( mStyle->addColorRamp( "test_random", randomRamp ) == true );
+
+  // color brewer ramp
+  QgsVectorColorBrewerColorRampV2* cb1Ramp = new QgsVectorColorBrewerColorRampV2();
+  QVERIFY( mStyle->addColorRamp( "test_cb1", cb1Ramp ) == true );
+  QgsVectorColorBrewerColorRampV2* cb2Ramp = new QgsVectorColorBrewerColorRampV2( "RdYlGn", 6 );
+  QVERIFY( mStyle->addColorRamp( "test_cb2", cb2Ramp ) == true );
+}
+
+void TestStyleV2::testLoadColorRamps()
+{
+  QStringList colorRamps = mStyle->colorRampNames();
+  QStringList colorRampsTest = QStringList() << "BrBG" << "Spectral" 
+                                             << "test_gradient" << "test_random" << "test_cb1" << "test_cb2" ;
+
+  // values for color tests
+  QMultiMap< QString, QPair< double, QColor> > colorTests;
+  colorTests.insert( "test_gradient", qMakePair ( 0.25, QColor( "#ff7f7f" ) ) );
+  colorTests.insert( "test_gradient", qMakePair ( 0.66, QColor( "#adadff" ) ) );
+  // cannot test random colors!
+  colorTests.insert( "test_cb1", qMakePair ( 0.25, QColor( "#fdae61" ) ) );
+  colorTests.insert( "test_cb1", qMakePair ( 0.66, QColor( "#abdda4" ) ) );
+  colorTests.insert( "test_cb2", qMakePair ( 0.25, QColor( "#fc8d59" ) ) );
+  colorTests.insert( "test_cb2", qMakePair ( 0.66, QColor( "#d9ef8b" ) ) );
+
+  foreach( QString name, colorRampsTest )
+  {
+    QgsDebugMsg( "colorRamp " + name );
+    QVERIFY( colorRamps.contains( name ) );
+    QgsVectorColorRampV2* ramp = mStyle->colorRamp( name );
+    QVERIFY( ramp != 0 );
+    // test colors
+    if ( colorTests.contains( name ) )
+    {
+      QList< QPair< double, QColor> > values = colorTests.values( name );
+      for ( int i = 0; i < values.size(); ++i )
+      {
+        QVERIFY( testValidColor( ramp, values.at(i).first, values.at(i).second ) );
+      }
+    }
+    if ( ramp )
+      delete ramp;     
+  }
+}
+
+void TestStyleV2::testSaveLoad()
+{
+  mStyle->save();
+  mStyle->clear();
+  mStyle->load( QgsApplication::userStyleV2Path() ); 
+
+  QStringList colorRamps = mStyle->colorRampNames();
+  QStringList colorRampsTest = QStringList() << "test_gradient";
+
+  foreach( QString name, colorRampsTest )
+  {
+    QgsDebugMsg( "colorRamp " + name );
+    QVERIFY( colorRamps.contains( name ) );
+    QgsVectorColorRampV2* ramp = mStyle->colorRamp( name );
+    QVERIFY( ramp != 0 );
+    if ( ramp )
+      delete ramp;     
+  }
+}
+
+
+QTEST_MAIN( TestStyleV2 )
+#include "moc_testqgsstylev2.cxx"