Add test to enable detecting differences between generation N and N+1 of a cmake generated build tree. Theoretically, each generation run with exactly the same arguments should be identical to the previous generation... Practically, there are differences. This is a tool to help us measure those differences. For now, the test always succeeds. Eventually, we may add the code to make it fail when there are differences.
This commit is contained in:
David Cole
parent
857b5dc9f5
commit
20fe27cda1
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@ -535,6 +535,21 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=CVS -P ${CMake_SOURCE_DIR}/Utilities/Rel
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"${CMake_BINARY_DIR}/Tests/CMakeTestAllGenerators")
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ENDIF(CTEST_RUN_CMakeTestAllGenerators)
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if(NOT DEFINED CTEST_RUN_CMakeTestMultipleConfigures)
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set(CTEST_RUN_CMakeTestMultipleConfigures ON)
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endif(NOT DEFINED CTEST_RUN_CMakeTestMultipleConfigures)
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IF(CTEST_RUN_CMakeTestMultipleConfigures)
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ADD_TEST(CMakeTestMultipleConfigures ${CMAKE_CMAKE_COMMAND}
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-D dir=${CMake_BINARY_DIR}/Tests/CMakeTestMultipleConfigures
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-D gen=${CMAKE_TEST_GENERATOR}
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-D CMake_SOURCE_DIR=${CMake_SOURCE_DIR}
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-P ${CMake_SOURCE_DIR}/Tests/CMakeTestMultipleConfigures/RunCMake.cmake
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)
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LIST(APPEND TEST_BUILD_DIRS
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"${CMake_BINARY_DIR}/Tests/CMakeTestMultipleConfigures")
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ENDIF(CTEST_RUN_CMakeTestMultipleConfigures)
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ADD_TEST(LoadedCommandOneConfig ${CMAKE_CTEST_COMMAND}
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--build-and-test
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"${CMake_SOURCE_DIR}/Tests/LoadCommandOneConfig"
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@ -0,0 +1,165 @@
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if(NOT DEFINED CMake_SOURCE_DIR)
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message(FATAL_ERROR "CMake_SOURCE_DIR not defined")
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endif()
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if(NOT DEFINED dir)
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message(FATAL_ERROR "dir not defined")
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endif()
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if(NOT DEFINED gen)
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message(FATAL_ERROR "gen not defined")
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endif()
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# Call cmake once to get a baseline/reference output build tree: "Build".
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# Then call cmake N more times, each time making a copy of the entire
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# build tree after cmake is done configuring/generating. At the end,
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# analyze the diffs in the generated build trees. Expect no diffs.
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#
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message(STATUS "CTEST_FULL_OUTPUT (Avoid ctest truncation of output)")
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set(N 7)
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# First setup source and binary trees:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory
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${dir}/Source
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory
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${dir}/Build
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory
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${CMake_SOURCE_DIR}/Tests/CTestTest/SmallAndFast
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${dir}/Source
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory
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${dir}/Build
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)
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# Patch SmallAndFast to build a .cxx executable too:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy
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${dir}/Source/echoargs.c
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${dir}/Source/echoargs.cxx
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)
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file(APPEND "${dir}/Source/CMakeLists.txt" "\nadd_executable(echoargsCXX echoargs.cxx)\n")
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# Loop N times, saving a copy of the configured/generated build tree each time:
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#
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foreach(i RANGE 1 ${N})
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# Equivalent sequence of shell commands:
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#
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message(STATUS "${i}: cd Build && cmake -G \"${gen}\" ../Source && cd .. && cp -r Build b${i}")
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# Run cmake:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -G ${gen} ../Source
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RESULT_VARIABLE result
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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WORKING_DIRECTORY ${dir}/Build
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)
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message(STATUS "result='${result}'")
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message(STATUS "stdout='${stdout}'")
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message(STATUS "stderr='${stderr}'")
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message(STATUS "")
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# Save this iteration of the Build directory:
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#
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory
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${dir}/b${i}
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)
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory
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${dir}/Build
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${dir}/b${i}
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RESULT_VARIABLE result
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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)
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message(STATUS "result='${result}'")
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message(STATUS "stdout='${stdout}'")
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message(STATUS "stderr='${stderr}'")
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message(STATUS "")
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endforeach()
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# Function to analyze diffs between two directories.
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# Set DIFF_EXECUTABLE before calling if 'diff' is available.
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#
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function(analyze_directory_diffs d1 d2 diff_count_var)
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set(diffs 0)
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message(STATUS "Analyzing directory diffs between:")
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message(STATUS " d1='${d1}'")
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message(STATUS " d2='${d2}'")
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if(NOT "${d1}" STREQUAL "" AND NOT "${d2}" STREQUAL "")
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message(STATUS "info: analyzing directories")
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file(GLOB_RECURSE files1 RELATIVE "${d1}" "${d1}/*")
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file(GLOB_RECURSE files2 RELATIVE "${d2}" "${d2}/*")
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if("${files1}" STREQUAL "${files2}")
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message(STATUS "info: file lists the same")
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#message(STATUS " files='${files1}'")
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foreach(f ${files1})
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execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files
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${d1}/${f}
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${d2}/${f}
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RESULT_VARIABLE result
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OUTPUT_VARIABLE stdout
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ERROR_VARIABLE stderr
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)
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if(result STREQUAL 0)
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#message(STATUS "info: file '${f}' the same")
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else()
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math(EXPR diffs "${diffs} + 1")
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message(STATUS "warning: file '${f}' differs from d1 to d2")
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file(READ "${d1}/${f}" f1contents)
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message(STATUS "contents of file '${d1}/${f}'
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[===[${f1contents}]===]")
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file(READ "${d2}/${f}" f2contents)
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message(STATUS "contents of file '${d2}/${f}'
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[===[${f2contents}]===]")
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if(DIFF_EXECUTABLE)
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message(STATUS "diff of files '${d1}/${f}' '${d2}/${f}'")
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message(STATUS "[====[")
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execute_process(COMMAND ${DIFF_EXECUTABLE} "${d1}/${f}" "${d2}/${f}")
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message(STATUS "]====]")
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endif()
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endif()
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endforeach()
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else()
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math(EXPR diffs "${diffs} + 1")
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message(STATUS "warning: file *lists* differ - some files exist in d1/not-d2 or not-d1/d2...")
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message(STATUS " files1='${files1}'")
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message(STATUS " files2='${files2}'")
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endif()
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endif()
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set(${diff_count_var} ${diffs} PARENT_SCOPE)
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endfunction(analyze_directory_diffs)
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# Analyze diffs between b1:b2, b2:b3, b3:b4, b4:b5 ... bN-1:bN.
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# Expect no diffs.
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#
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find_program(DIFF_EXECUTABLE diff)
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set(total_diffs 0)
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foreach(i RANGE 2 ${N})
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math(EXPR prev "${i} - 1")
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set(count 0)
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analyze_directory_diffs(${dir}/b${prev} ${dir}/b${i} count)
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message(STATUS "diff count='${count}'")
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message(STATUS "")
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math(EXPR total_diffs "${total_diffs} + ${count}")
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endforeach()
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message(STATUS "CMAKE_COMMAND='${CMAKE_COMMAND}'")
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message(STATUS "total_diffs='${total_diffs}'")
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