Basic test of QgsDistanceArea

qgis · Sep 3, 2012 · 182a64e · 182a64e
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diff --git a/python/core/qgsdistancearea.sip b/python/core/qgsdistancearea.sip
@@ -13,6 +13,12 @@ class QgsDistanceArea
     //! Destructor
     ~QgsDistanceArea();
 
+   //! Copy constructor
+    QgsDistanceArea(const QgsDistanceArea & origDA );
+
+    //! Assignment operator
+    operator=(const QgsDistanceArea & origDA );
+
     //! sets whether coordinates must be projected to ellipsoid before measuring
     void setEllipsoidalMode(bool flag);
     void setProjectionsEnabled(bool flag) /Deprecated/;

diff --git a/src/core/qgsdistancearea.cpp b/src/core/qgsdistancearea.cpp
@@ -48,11 +48,41 @@ QgsDistanceArea::QgsDistanceArea()
 }
 
 
+//! Copy constructor
+QgsDistanceArea::QgsDistanceArea(const QgsDistanceArea & origDA )
+{
+  _copy( origDA );
+}
+
 QgsDistanceArea::~QgsDistanceArea()
 {
   delete mCoordTransform;
 }
 
+//! Assignment operator
+QgsDistanceArea & QgsDistanceArea::operator=(const QgsDistanceArea & origDA )
+{
+  if (this == & origDA )
+  {
+    // Do not copy unto self
+    return *this;
+  }
+  _copy( origDA );
+  return *this;
+}
+
+//! Copy helper. Avoid Sqlite3 accesses.
+void QgsDistanceArea::_copy( const QgsDistanceArea & origDA )
+{
+  mEllipsoidalMode = origDA.mEllipsoidalMode;
+  mEllipsoid = origDA.mEllipsoid;
+  mSemiMajor = origDA.mSemiMajor;
+  mSemiMinor = origDA.mSemiMinor;
+  mInvFlattening = origDA.mInvFlattening;
+  mSourceRefSys = origDA.mSourceRefSys;
+  mCoordTransform = new QgsCoordinateTransform( origDA.mCoordTransform->sourceCrs(), origDA.mCoordTransform->destCRS() );
+}
+
 void QgsDistanceArea::setEllipsoidalMode( bool flag )
 {
   mEllipsoidalMode = flag;

diff --git a/src/core/qgsdistancearea.h b/src/core/qgsdistancearea.h
@@ -40,6 +40,12 @@ class CORE_EXPORT QgsDistanceArea
     //! Destructor
     ~QgsDistanceArea();
 
+    //! Copy constructor
+    QgsDistanceArea(const QgsDistanceArea & origDA );
+
+    //! Assignment operator
+    QgsDistanceArea & operator=(const QgsDistanceArea & origDA );
+
     //! sets whether coordinates must be projected to ellipsoid before measuring
     void setEllipsoidalMode( bool flag );
     Q_DECL_DEPRECATED void setProjectionsEnabled( bool flag ) { setEllipsoidalMode( flag ); };
@@ -134,6 +140,8 @@ class CORE_EXPORT QgsDistanceArea
     void computeAreaInit();
 
   private:
+    //! Copy helper
+    void _copy( const QgsDistanceArea & origDA );
 
     //! used for transforming coordinates from source CRS to ellipsoid's coordinates
     QgsCoordinateTransform* mCoordTransform;

diff --git a/tests/src/core/CMakeLists.txt b/tests/src/core/CMakeLists.txt
@@ -78,6 +78,7 @@ ENDMACRO (ADD_QGIS_TEST)
 #############################################################
 # Tests:
 
+ADD_QGIS_TEST(distanceareatest testqgsdistancearea.cpp)
 ADD_QGIS_TEST(applicationtest testqgsapplication.cpp)
 ADD_QGIS_TEST(expressiontest testqgsexpression.cpp)
 ADD_QGIS_TEST(filewritertest testqgsvectorfilewriter.cpp)

diff --git a/tests/src/core/testqgsdistancearea.cpp b/tests/src/core/testqgsdistancearea.cpp
@@ -0,0 +1,94 @@
+/***************************************************************************
+     testqgsdistancearea.cpp
+     --------------------------------------
+    Date                 : Tue 14 Aug 2012
+    Copyright            : (C) 2012 by Magnus Homann
+    Email                : magnus at homann dot se
+ ***************************************************************************
+ *                                                                         *
+ *   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 <QString>
+#include <QObject>
+#include <qgsapplication.h>
+//header for class being tested
+#include <qgsdistancearea.h>
+#include <qgspoint.h>
+#include "qgslogger.h"
+
+class TestQgsDistanceArea: public QObject
+{
+
+    Q_OBJECT;
+  private slots:
+  void initTestCase();
+  void basic();
+  void test_distances();
+  void unit_conversions();
+};
+
+void TestQgsDistanceArea::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 TestQgsDistanceArea::basic()
+{
+  QgsPoint p1( 1.0, 3.0 ), p2(-2.0, -1.0 ); 
+  QgsDistanceArea daA;
+  double resultA, resultB;
+
+  daA.setEllipsoid( "NONE" );
+  resultA = daA.measureLine( p1, p2 );
+  QCOMPARE( resultA, 5.0 );
+
+  // Now, on an ellipsoid. Always less?
+  daA.setSourceCrs( 3006 );
+  daA.setEllipsoid( "WGS84" );
+  daA.setEllipsoidalMode( true );
+  resultA = daA.measureLine( p1, p2 );
+  QVERIFY( resultA < 5.0 );
+
+  // Test copy constructor
+  QgsDistanceArea daB( daA );
+  resultB = daB.measureLine( p1, p2 );
+  QCOMPARE( resultA, resultB );
+
+  // Different Ellipsoid
+  daB.setEllipsoid( "WGS72" );  
+  resultB = daB.measureLine( p1, p2 );
+  QVERIFY( ! qFuzzyCompare( resultA, resultB ) );
+
+  // Test assignment
+  daA = daB;
+  resultA = daA.measureLine( p1, p2 );
+  QCOMPARE( resultA, resultB );
+
+};
+
+void TestQgsDistanceArea::test_distances()
+{
+};
+
+void TestQgsDistanceArea::unit_conversions()
+{
+};
+
+QTEST_MAIN( TestQgsDistanceArea )
+#include "moc_testqgsdistancearea.cxx"
+
+
+
+