Add unit test for ticket #15116

mhugent · mhugent · commit ef90c0b2f798 · 2016-06-27T13:32:36.000+02:00
diff --git a/tests/src/core/testqgsgeometryutils.cpp b/tests/src/core/testqgsgeometryutils.cpp
@@ -44,6 +44,8 @@ class TestQgsGeometryUtils: public QObject
     void testAverageAngle_data();
     void testAverageAngle();
     void testDistanceToVertex();
+    void testCircleCenterRadius_data();
+    void testCircleCenterRadius();
 };
 
 
@@ -361,6 +363,41 @@ void TestQgsGeometryUtils::testDistanceToVertex()
   QCOMPARE( QgsGeometryUtils::distanceToVertex( point, QgsVertexId( 0, 0, 1 ) ), -1.0 );
 }
 
+void TestQgsGeometryUtils::testCircleCenterRadius_data()
+{
+    QTest::addColumn<double>( "x1" );
+    QTest::addColumn<double>( "y1" );
+    QTest::addColumn<double>( "x2" );
+    QTest::addColumn<double>( "y2" );
+    QTest::addColumn<double>( "x3" );
+    QTest::addColumn<double>( "y3" );
+    QTest::addColumn<double>( "expectedRadius" );
+    QTest::addColumn<double>( "expectedCenterX" );
+    QTest::addColumn<double>( "expectedCenterY" );
+
+    QTest::newRow( "circleCenterRadius1" ) << 1.0 << 1.0 << 5.0 << 7.0 << 1.0 << 1.0 << sqrt( 13.0 ) << 3.0 << 4.0;
+    QTest::newRow( "circleCenterRadius1" ) << 0.0 << 2.0 << 2.0 << 2.0 << 0.0 << 2.0 << 1.0 << 1.0 << 2.0;
+}
+
+void TestQgsGeometryUtils::testCircleCenterRadius()
+{
+   QFETCH( double, x1 );
+   QFETCH( double, y1 );
+   QFETCH( double, x2 );
+   QFETCH( double, y2 );
+   QFETCH( double, x3 );
+   QFETCH( double, y3 );
+   QFETCH( double, expectedRadius );
+   QFETCH( double, expectedCenterX );
+   QFETCH( double, expectedCenterY );
+
+   double radius, centerX, centerY;
+   QgsGeometryUtils::circleCenterRadius( QgsPointV2( x1, y1 ), QgsPointV2( x2, y2 ), QgsPointV2( x3, y3 ), radius, centerX, centerY );
+   QVERIFY( qgsDoubleNear( expectedRadius, radius ) );
+   QVERIFY( qgsDoubleNear( expectedCenterX, centerX ) );
+   QVERIFY( qgsDoubleNear( expectedCenterY, centerY ) );
+}
+
 
 QTEST_MAIN( TestQgsGeometryUtils )
 #include "testqgsgeometryutils.moc"
