Convert VTKData test inputs to ExternalData content links

Add to the Testing/Data directory ExternalData content links mirroring
the content and layout we use from the VTKData/Data directory.

Add a CMake/vtkLegacyData.cmake module, included from CMakeLists.txt and
Testing/External/CMakeLists.txt, to call ExternalData_Expand_Arguments
for all data directories added from VTKData/Data.  This will bulk-fetch
all test input data currently used by tests of any module, enabled or
not.  We can make the DATA{} references more granular later.

Add a VTK_TEST_DATA_DIR variable to refer to the directory we tell the
ExternalData module to populate the real data files.  Replace references
to VTK_DATA_ROOT in test command lines (after -D) with references to
VTK_TEST_DATA_DIR.  Drop the VTK_DATA_ROOT CMake option and stop using
the VTKData repository.

Remove the TESTING_DATA option from the vtk_add_test_cxx API and remove
the VTK_DATA_ROOT option from the vtk_add_test_mpi API since all test
input data are now handled through ExternalData and Testing/Data content
links.

Change-Id: Id02490b76ea2e161b9038188264a4830485039d8

Accelerators/Piston/Testing/Cxx/CMakeLists.txt

@@ -4,7 +4,7 @@ vtk_add_test_cxx(
 
 vtk_test_cxx_executable(${vtk-module}CxxTests)
 
-if(VTK_DATA_ROOT AND (VTK_MPI_MAX_NUMPROCS GREATER 1))
+if(VTK_MPI_MAX_NUMPROCS GREATER 1)
   find_package(MPI REQUIRED)
   include_directories(${MPI_INCLUDE_PATH})
 
@@ -13,21 +13,14 @@ if(VTK_DATA_ROOT AND (VTK_MPI_MAX_NUMPROCS GREATER 1))
   foreach(test ${PistonMPITests})
 
     vtk_module_test_executable(${vtk-module}Cxx-${test} ${test}.cxx)
-    if(VTK_DATA_ROOT)
-      ExternalData_add_test(VTKData
-        NAME ${vtk-module}Cxx-${test}
-        COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} 2 ${MPIEXEC_PREFLAGS}
-        $<TARGET_FILE:${vtk-module}Cxx-${test}>
-        -D ${VTK_DATA_ROOT}
-        -T ${VTK_TEST_OUTPUT_DIR}
-        -V DATA{../Data/Baseline/${test}.png,:}
-        ${VTK_MPI_POSTFLAGS})
-    else()
-      add_test(NAME ${vtk-module}Cxx-${test}
-        COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} 2 ${MPIEXEC_PREFLAGS}
-        $<TARGET_FILE:${vtk-module}Cxx-${test}>
-        ${VTK_MPI_POSTFLAGS})
-    endif()
+    ExternalData_add_test(VTKData
+      NAME ${vtk-module}Cxx-${test}
+      COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} 2 ${MPIEXEC_PREFLAGS}
+      $<TARGET_FILE:${vtk-module}Cxx-${test}>
+      -D ${VTK_TEST_DATA_DIR}
+      -T ${VTK_TEST_OUTPUT_DIR}
+      -V DATA{../Data/Baseline/${test}.png,:}
+      ${VTK_MPI_POSTFLAGS})
   endforeach()
 
 endif()

Accelerators/Piston/Testing/Python/CMakeLists.txt

@@ -29,7 +29,7 @@ if (VTK_PYTHON_EXE)
       COMMAND ${VTK_PYTHON_EXE}
       ${CMAKE_CURRENT_SOURCE_DIR}/Test${tfile}.py
       -B "DATA{../Data/Baseline/,REGEX:Test${tfile}(_[0-9]+)?.png}"
-      -D ${VTK_DATA_ROOT}/Data)
+      -D ${VTK_TEST_DATA_DIR}/Data)
   endforeach ( )
 
   #
@@ -40,7 +40,7 @@ if (VTK_PYTHON_EXE)
     COMMAND ${VTK_PYTHON_EXE}
     ${CMAKE_CURRENT_SOURCE_DIR}/TestRendering.py
     -B "DATA{../Data/Baseline/,REGEX:TestRendering(_[0-9]+)?.png}"
-    -D ${VTK_DATA_ROOT}/Data
+    -D ${VTK_TEST_DATA_DIR}/Data
     --gpu_render)
 
 endif ()

CMake/vtkLegacyData.cmake

+# Make testing data from the legacy VTKData repository available.
+# DO NOT ADD NEW DATA HERE!!
+# TODO: Reference testing data from each module only as needed.
+set(data "DATA{${VTK_TEST_INPUT_DIR}/,REGEX:.*}")
+foreach(d
+    Infovis
+    Infovis/SQLite
+    Infovis/XML
+    Infovis/Images
+    Infovis/DimacsGraphs
+    Tango
+    SemiDisk
+    GIS
+    many_blocks
+    many_blocks/many_blocks
+    Quadratic
+    Dave_Karelitz_Small
+    MetaIO
+    libtiff
+    AMR
+    AMR/HierarchicalBoxDataset.v1.0
+    AMR/HierarchicalBoxDataset.v1.1
+    AMR/Enzo
+    AMR/Enzo/DD0010
+    UCD2D
+    ex-blow_5
+    chombo3d
+    foot
+    chi_field
+    headsq
+    Viewpoint
+    EnSight
+    )
+  list(APPEND data "DATA{${VTK_TEST_INPUT_DIR}/${d}/,REGEX:.*}")
+endforeach()
+ExternalData_Expand_Arguments(VTKData _ ${data})

CMake/vtkTestingMacros.cmake

 # -----------------------------------------------------------------------------
-# Usage: vtk_add_test_mpi(name [VTK_DATA_ROOT|TESTING_DATA])
+# Usage: vtk_add_test_mpi(name [TESTING_DATA])
 macro (vtk_add_test_mpi name)
   get_filename_component(TName ${name} NAME_WE)
   set(argn "${ARGN}")
   set(data_dir "")
   set(test_extra "")
   foreach(a IN LISTS argn)
-    if("[${a}]" STREQUAL "[VTK_DATA_ROOT]")
-      set(data_dir ${VTK_DATA_ROOT})
-    elseif("[${a}]" STREQUAL "[TESTING_DATA]")
-      set(data_dir ${ExternalData_BINARY_ROOT}/Testing)
+    if("[${a}]" STREQUAL "[TESTING_DATA]")
+      set(data_dir ${VTK_TEST_DATA_DIR})
     elseif("x${a}" MATCHES "\\.cxx$")
       list(APPEND test_extra ${a})
     else()
@@ -48,7 +46,6 @@ function(vtk_add_test_cxx)
   set(no_data 0)
   set(no_valid 0)
   set(no_output 0)
-  set(test_data 0)
   foreach(a IN LISTS ARGN)
     if("[${a}]" STREQUAL "[NO_DATA]")
       set(no_data 1)
@@ -56,8 +53,6 @@ function(vtk_add_test_cxx)
       set(no_valid 1)
     elseif("[${a}]" STREQUAL "[NO_OUTPUT]")
       set(no_output 1)
-    elseif("[${a}]" STREQUAL "[TESTING_DATA]")
-      set(test_data 1)
     elseif("x${a}" MATCHES "^x([^.]*)\\.cxx,?(.*)$")
       set(name "${CMAKE_MATCH_1}")
       string(REPLACE "," ";" _${name}_OPTIONS "${CMAKE_MATCH_2}")
@@ -67,14 +62,8 @@ function(vtk_add_test_cxx)
     endif()
   endforeach()
 
-  if(test_data)
-    set(data_dir "${ExternalData_BINARY_ROOT}/Testing")
-  else()
-    set(data_dir "${VTK_DATA_ROOT}")
-  endif()
-
-  if(data_dir AND NOT no_data)
-    set(_D -D ${data_dir})
+  if(NOT no_data)
+    set(_D -D ${VTK_TEST_DATA_DIR})
   else()
     set(_D "")
   endif()
@@ -107,7 +96,7 @@ function(vtk_add_test_cxx)
         message(FATAL_ERROR "Test ${name} has unknown option \"${opt}\"")
       endif()
     endforeach()
-    if(data_dir AND NOT tmp_no_valid)
+    if(NOT tmp_no_valid)
       set(_V -V "DATA{${base_dir}/${name}.png,:}")
     endif()
     ExternalData_add_test(VTKData
@@ -172,8 +161,8 @@ function(vtk_add_test_python name)
     endif()
   endforeach()
 
-  if(VTK_DATA_ROOT AND NOT no_data)
-    set(_D -D ${VTK_DATA_ROOT})
+  if(NOT no_data)
+    set(_D -D ${VTK_TEST_DATA_DIR})
   else()
     set(_D "")
   endif()
@@ -183,7 +172,7 @@ function(vtk_add_test_python name)
   set(_V "")
   set(_T "")
   set(_A "")
-  if(VTK_DATA_ROOT AND NOT no_valid)
+  if(NOT no_valid)
     if(no_rt)
       set(_B -B "DATA{${${vtk-module}_SOURCE_DIR}/Testing/Data/Baseline/,REGEX:${TName}(_[0-9]+)?.png}")
     else()
@@ -229,8 +218,8 @@ function(vtk_add_test_tcl name)
     endif()
   endforeach()
 
-  if(VTK_DATA_ROOT AND NOT no_data)
-    set(_D -D ${VTK_DATA_ROOT})
+  if(NOT no_data)
+    set(_D -D ${VTK_TEST_DATA_DIR})
   elseif(no_rt)
     set(_D "")
   else()
@@ -242,7 +231,7 @@ function(vtk_add_test_tcl name)
   set(_T "")
   if(NOT no_rt)
     set(rtImageTest ${vtkTestingRendering_SOURCE_DIR}/rtImageTest.tcl)
-    if(VTK_DATA_ROOT AND NOT no_valid)
+    if(NOT no_valid)
       set(_V -V "DATA{${${vtk-module}_SOURCE_DIR}/Testing/Data/Baseline/${TName}.png,:}")
     endif()
     if(NOT no_output)

CMake/vtkTestingRenderingDriver.cmake

@@ -5,7 +5,7 @@ SET(CMAKE_TESTDRIVER_BEFORE_TESTMAIN
     vtkTestingInteractor::TempDirectory =
       std::string(\"${VTK_TEST_OUTPUT_DIR}\");
     vtkTestingInteractor::DataDirectory =
-      std::string(\"${VTK_DATA_ROOT}\");
+      std::string(\"Use_-D_for_Data\");
 
     int interactive = 0;
     for (int ii = 0; ii < ac; ++ii)

CMakeLists.txt

@@ -27,6 +27,9 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
     "MinSizeRel" "RelWithDebInfo")
 endif()
 
+# Test input data staging directory.
+set(VTK_TEST_DATA_DIR "${ExternalData_BINARY_ROOT}/Testing")
+
 # Test input data directory.
 set(VTK_TEST_INPUT_DIR "${VTK_SOURCE_DIR}/Testing/Data")
 
@@ -169,20 +172,7 @@ include(vtkDetermineCompilerFlags)
 add_definitions(-DVTK_IN_VTK)
 
 #-----------------------------------------------------------------------------
-# Configure the default VTK_DATA_ROOT for the location of VTKData.  To get
-# the VTKData repository from git, issue the following command:
-#
-# git clone git://vtk.org/VTKData.git
-#
-# To see the web hosted repository, visit http://vtk.org/VTKData.git
-FIND_PATH(VTK_DATA_ROOT VTKData.readme
-  ${VTK_SOURCE_DIR}/VTKData
-  ${VTK_SOURCE_DIR}/../VTKData
-  ${VTK_SOURCE_DIR}/../../VTKData
-  $ENV{VTK_DATA_ROOT}
-  DOC "The repository for data used for testing.  To obtain from git: \"git clone git://vtk.org/VTKData.git\""
-  )
-mark_as_advanced(VTK_DATA_ROOT)
+include(vtkLegacyData)
 
 # Provide an option for tests requiring "large" input data
 option(VTK_USE_LARGE_DATA "Enable tests requiring \"large\" data" OFF)

Charts/Core/Testing/Cxx/CMakeLists.txt

@@ -5,46 +5,44 @@ vtk_add_test_cxx(NO_DATA NO_VALID