Function TestUseCache

Filters/Temporal/Testing/Cxx/TestDataObjectMeshCache.cxx:252–290

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//------------------------------------------------------------------------------
bool TestUseCache(TestMeshPipeline* pipeline)
{
  vtkNew<vtkDataObjectMeshCache> cache;

  vtkNew<vtkPolyData> expectedOutput;
  expectedOutput->DeepCopy(pipeline->GetFilterOutputData());
  // we forward only point data
  expectedOutput->GetCellData()->Initialize();
  assert(expectedOutput->GetCellData()->GetGhostArray() == nullptr);

  pipeline->InitializeCache(cache);
  pipeline->UpdateInputData(details::modifiedData[0]);

  vtkDataObjectMeshCache::Status status = cache->GetStatus();
  vtkLogIf(ERROR, !status.enabled(), "UseCache: expect usable cache.");
  vtkNew<vtkPolyData> cacheOutput;
  cache->CopyCacheToDataObject(cacheOutput);
  status = cache->GetStatus();
  vtkLogIf(ERROR, !status.enabled(), "UseCache: using cache should not invalidate it.");

  // Cell data arrays are not forwarded.
  // This concerns also ghostcells array that is used in GetMeshMTime. So cache output
  // may appears as older than pipeline data.
  bool sameMeshTime = pipeline->GetOutputMeshMTime() >= cacheOutput->GetMeshMTime();
  vtkLogIf(ERROR, !sameMeshTime,
    "UseCache: cache should have same mesh mtime than previous output. Expected");
  vtkLogIf(ERROR, !sameMeshTime,
    "expected: " << pipeline->GetInputMeshMTime() << " but has: " << cacheOutput->GetMeshMTime());

  vtkNew<vtkIntArray> expectedArray;
  expectedArray->SetName(mockArraysName::pointData.c_str());
  expectedArray->SetArray(details::modifiedData.data(), 4, 1);
  expectedOutput->GetPointData()->AddArray(expectedArray);

  bool sameData = vtkTestUtilities::CompareDataObjects(cacheOutput, expectedOutput);
  vtkLogIf(ERROR, !sameData, "UseCache: wrong cache output.");

  return true;
}

//------------------------------------------------------------------------------
bool TestMeshOnly(TestMeshPipeline* pipeline)