ENH: Updating the tecplot test to include gunzip files.

IO/Testing/Cxx/TestTecplotReader.cxx

@@ -38,6 +38,7 @@ int TestTecplotReader( int argc, char *argv[] )
   // we have to use a composite pipeline
   vtkCompositeDataPipeline* exec = vtkCompositeDataPipeline::New();
   vtkCompositeDataPipeline* exec2 = vtkCompositeDataPipeline::New();
+  vtkCompositeDataPipeline* exec3 = vtkCompositeDataPipeline::New();
 
   // Basic visualization.
   vtkRenderWindow* renWin = vtkRenderWindow::New();
@@ -76,6 +77,7 @@ int TestTecplotReader( int argc, char *argv[] )
     vtkSmartPointer<vtkActor>::New();
   actor->SetMapper(mapper);
 
+  //create the reader for the cell centered data set.
   char* fname2 = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/cellcentered.tec");
   vtkSmartPointer<vtkTecplotReader> reader2 =
   vtkSmartPointer<vtkTecplotReader>::New();
@@ -104,9 +106,40 @@ int TestTecplotReader( int argc, char *argv[] )
     vtkSmartPointer<vtkActor>::New();
   actor2->SetMapper(mapper2);
 
+  //create the reader for the gzipped dataset
+  char* fname3 = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/flow.tec.gz");
+  vtkSmartPointer<vtkTecplotReader> reader3 =
+  vtkSmartPointer<vtkTecplotReader>::New();
+  reader3->SetFileName(fname3);
+  reader3->SetDataArrayStatus("V",1); //both files have a property named V
+  reader3->Update();
+  delete [] fname3;
+
+  vtkSmartPointer<vtkCompositeDataGeometryFilter> geom3 =
+  vtkSmartPointer<vtkCompositeDataGeometryFilter>::New();
+  geom3->SetExecutive(exec3);
+  geom3->SetInputConnection(0,reader3->GetOutputPort(0));
+  geom3->Update();
+
+  vtkPolyData *data3 = geom3->GetOutput();
+  data3->GetPointData()->SetScalars( data3->GetPointData()->GetArray("V") );
+
+  vtkSmartPointer<vtkPolyDataMapper> mapper3 =
+    vtkSmartPointer<vtkPolyDataMapper>::New();
+  mapper3->SetInput(data3);
+  mapper3->ScalarVisibilityOn();
+  mapper3->SetColorModeToMapScalars();
+  mapper3->SetScalarRange(-0.3,0.3);
+
+  vtkSmartPointer<vtkActor> actor3 =
+    vtkSmartPointer<vtkActor>::New();
+  actor3->SetMapper(mapper3);
+  actor3->SetPosition(1,0,0);
+
   ren->SetBackground(0.0,0.0,0.0);
   ren->AddActor(actor);
   ren->AddActor(actor2);
+  ren->AddActor(actor3);
   renWin->SetSize(300,300);
   vtkCamera *cam=ren->GetActiveCamera();
   ren->ResetCamera();
@@ -127,5 +160,6 @@ int TestTecplotReader( int argc, char *argv[] )
   iren->Delete();
   exec->Delete();
   exec2->Delete();
+  exec3->Delete();
   return !retVal;
 }