vtkWebApplication Add test to expose memory leak

Web/Core/Testing/Python/CMakeLists.txt

@@ -5,4 +5,5 @@ vtk_add_test_python(
 vtk_add_test_python(
   NO_DATA NO_VALID NO_OUTPUT
   TestObjectIdMap.py
+  TestWebApplicationMemory.py
   )

Web/Core/Testing/Python/TestWebApplicationMemory.py

+import vtk
+from vtk.test import Testing
+from vtk.vtkWebCore import vtkWebApplication
+
+class TestWebApplicationMemory(Testing.vtkTest):
+    def testWebApplicationMemory(self):
+        cylinder = vtk.vtkCylinderSource()
+        cylinder.SetResolution(8)
+
+        cylinderMapper = vtk.vtkPolyDataMapper()
+        cylinderMapper.SetInputConnection(cylinder.GetOutputPort())
+
+        cylinderActor = vtk.vtkActor()
+        cylinderActor.SetMapper(cylinderMapper)
+        cylinderActor.RotateX(30.0)
+        cylinderActor.RotateY(-45.0)
+
+        ren = vtk.vtkRenderer()
+        renWin = vtk.vtkRenderWindow()
+        renWin.AddRenderer(ren)
+        ren.AddActor(cylinderActor)
+        renWin.SetSize(200, 200)
+
+        ren.ResetCamera()
+        ren.GetActiveCamera().Zoom(1.5)
+        renWin.Render()
+
+        webApp = vtk.vtkWebApplication()
+        # no memory leaks sould be reported when compiling with VTK_DEBUG_LEAKS
+        webApp.StillRender(renWin)
+
+if __name__ == "__main__":
+    Testing.main([(TestWebApplicationMemory, 'test')])