FourPaneViewer example misses testcase

I spent some time (too much time!) investigating this example, and here is what I’ve discovered:

  • The “test” only builds the example, it doesn’t run the example (same as you found, it reports No tests were found!!! after the example is built).
  • VTK doesn’t provide any data that is suitable for testing: prostate.IMG is just one slice, and the collection/*.dcm images are a time series rather than a volume.
  • Even with as proper DICOM volume, the example appears to be incomplete and buggy (see image below).

So this example is probably not a good starting point for anyone wanting to create a DICOM viewer with VTK.