# Macro to convert tcl tests to python and add those tests.
# Assumes VTK_WRAP_PYTHON is on and PYTHON_EXECUTABLE is defined.
MACRO (CONVERT_TCL_TEST_TO_PY tcl_tests kit_name) 
  SET (input_dir ${VTK_SOURCE_DIR}/${kit_name}/Testing/Tcl)
  SET (output_dir ${VTK_BINARY_DIR}/${kit_name}/Testing/Python)
  SET (target_name ${kit_name}PythonTests)

  SET(CMD ${PYTHON_EXECUTABLE})
  SET (CONVERTED_TESTS)
  SET (CONVERTER_SCRIPT "${VTK_BINARY_DIR}/Utilities/vtkTclTest2Py/vtkTclToPyConvertor.py")
  SET (TESTS_TO_CONVERT)
  SET (CONVERSIONLIST)

  FOREACH(test ${${tcl_tests}})
    SET(input "${input_dir}/${test}.tcl")
    SET(output "${output_dir}/${test}.py")

    SET (CONVERTED_TESTS ${CONVERTED_TESTS} "${output}")
    SET (CONVERSIONLIST ${CONVERSIONLIST} "${input};${output}")
    SET (TESTS_TO_CONVERT ${TESTS_TO_CONVERT} "${input}")
    
    #Add the py test.
    IF (${VTK_DATA_ROOT})
      ADD_TEST(${test}Python ${VTK_PYTHON_EXE}
        ${VTK_BINARY_DIR}/Utilities/vtkTclTest2Py/rtImageTest.py
        ${output}
        -D ${VTK_DATA_ROOT}
        -T ${VTK_BINARY_DIR}/Testing/Temporary
        -V Baseline/${kit_name}/${test}.png
        -A "${VTK_BINARY_DIR}/Utilities/vtkTclTest2Py" 
        -A "${VTK_LIBRARY_DIR}"
        )
    ELSE (${VTK_DATA_ROOT})
      ADD_TEST(${test}Python ${VTK_PYTHON_EXE}
        ${VTK_BINARY_DIR}/Utilities/vtkTclTest2Py/rtImageTest.py
        ${output}
        -T ${VTK_BINARY_DIR}/Testing/Temporary
        -V Baseline/${kit_name}/${test}.png
        -A "${VTK_BINARY_DIR}/Utilities/vtkTclTest2Py" 
        -A "${VTK_LIBRARY_DIR}"
        )
    ENDIF (${VTK_DATA_ROOT})
  ENDFOREACH(test)

  CONFIGURE_FILE(
    ${VTK_SOURCE_DIR}/Utilities/vtkTclTest2Py/vtkTestsToConvert.in
    ${output_dir}/vtkTestsToConvert
    @ONLY
    )

  ADD_CUSTOM_COMMAND(
    OUTPUT "${output_dir}/conversion_complete"
    COMMAND ${CMD}
    ARGS ${CONVERTER_SCRIPT}
    -l "${output_dir}/vtkTestsToConvert"
    -t "${output_dir}/conversion_complete"
    -A "${VTK_BINARY_DIR}/Utilities/vtkTclTest2Py" 
    -A "${VTK_BINARY_DIR}/Wrapping/Python"
    -A "${VTK_LIBRARY_DIR}"
    DEPENDS ${TESTS_TO_CONVERT} 
    ${output_dir}/vtkTestsToConvert
    ${CONVERTER_SCRIPT}
    COMMENT "Converting Tcl test"
    )
  ADD_CUSTOM_TARGET(${target_name} ALL DEPENDS
    "${output_dir}/conversion_complete")

  ADD_DEPENDENCIES(${target_name} vtktcltest2py_pyc)

  # TODO: add explicit dependency between the vtk{Name}Kit.cmake files and the
  # the test conversion.
ENDMACRO (CONVERT_TCL_TEST_TO_PY)