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# Set the ExternalProject GIT_TAG to desired_tag, and make sure the
# resulting checked out version is resulting_sha and rebuild.
# This check's the correct behavior of the ExternalProject UPDATE_COMMAND.
# Also verify that a fetch only occurs when fetch_expected is 1.
macro(check_a_tag desired_tag resulting_sha fetch_expected update_strategy)
message( STATUS "Checking ExternalProjectUpdate to tag: ${desired_tag}" )
# Remove the FETCH_HEAD file, so we can check if it gets replaced with a 'git
# fetch'.
set( FETCH_HEAD_file ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep1-GIT/.git/FETCH_HEAD )
file( REMOVE ${FETCH_HEAD_file} )
# Give ourselves a marker in the output. It is difficult to tell where we
# are up to without this
message(STATUS "===> check_a_tag ${desired_tag} ${resulting_sha} ${fetch_expected} ${update_strategy}")
# Configure
execute_process(COMMAND ${CMAKE_COMMAND}
-G ${CMAKE_GENERATOR} -T "${CMAKE_GENERATOR_TOOLSET}"
-A "${CMAKE_GENERATOR_PLATFORM}"
-DTEST_GIT_TAG:STRING=${desired_tag}
-DCMAKE_EP_GIT_REMOTE_UPDATE_STRATEGY:STRING=${update_strategy}
${ExternalProjectUpdate_SOURCE_DIR}
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not configure the project.")
endif()
# Build
execute_process(COMMAND ${CMAKE_COMMAND}
--build ${ExternalProjectUpdate_BINARY_DIR}
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not build the project.")
endif()
# Check the resulting SHA
execute_process(COMMAND ${GIT_EXECUTABLE}
rev-list --max-count=1 HEAD
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep1-GIT
RESULT_VARIABLE error_code
OUTPUT_VARIABLE tag_sha
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(error_code)
message(FATAL_ERROR "Could not check the sha.")
endif()
if(NOT (${tag_sha} STREQUAL ${resulting_sha}))
message(FATAL_ERROR "UPDATE_COMMAND produced
${tag_sha}
when
${resulting_sha}
was expected."
)
endif()
if( NOT EXISTS ${FETCH_HEAD_file} AND ${fetch_expected})
message( FATAL_ERROR "Fetch did NOT occur when it was expected.")
endif()
if( EXISTS ${FETCH_HEAD_file} AND NOT ${fetch_expected})
message( FATAL_ERROR "Fetch DID occur when it was not expected.")
endif()
message( STATUS "Checking ExternalProjectUpdate to tag: ${desired_tag} (disconnected)" )
# Remove the FETCH_HEAD file, so we can check if it gets replaced with a 'git
# fetch'.
set( FETCH_HEAD_file ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep2-GIT/.git/FETCH_HEAD )
file( REMOVE ${FETCH_HEAD_file} )
# Check initial SHA
execute_process(COMMAND ${GIT_EXECUTABLE}
rev-list --max-count=1 HEAD
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep2-GIT
RESULT_VARIABLE error_code
OUTPUT_VARIABLE initial_sha
OUTPUT_STRIP_TRAILING_WHITESPACE
)
# Configure
execute_process(COMMAND ${CMAKE_COMMAND}
-G ${CMAKE_GENERATOR} -T "${CMAKE_GENERATOR_TOOLSET}"
-A "${CMAKE_GENERATOR_PLATFORM}"
-DTEST_GIT_TAG:STRING=${desired_tag}
${ExternalProjectUpdate_SOURCE_DIR}
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not configure the project.")
endif()
# Build
execute_process(COMMAND ${CMAKE_COMMAND}
--build ${ExternalProjectUpdate_BINARY_DIR}
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not build the project.")
endif()
if( EXISTS ${FETCH_HEAD_file} )
message( FATAL_ERROR "Fetch occurred when it was not expected.")
endif()
# Check the resulting SHA
execute_process(COMMAND ${GIT_EXECUTABLE}
rev-list --max-count=1 HEAD
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep2-GIT
RESULT_VARIABLE error_code
OUTPUT_VARIABLE tag_sha
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(error_code)
message(FATAL_ERROR "Could not check the sha.")
endif()
if(NOT (${tag_sha} STREQUAL ${initial_sha}))
message(FATAL_ERROR "Update occurred when it was not expected.")
endif()
# Update
execute_process(COMMAND ${CMAKE_COMMAND}
--build ${ExternalProjectUpdate_BINARY_DIR}
--target TutorialStep2-GIT-update
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not build the project.")
endif()
# Check the resulting SHA
execute_process(COMMAND ${GIT_EXECUTABLE}
rev-list --max-count=1 HEAD
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep2-GIT
RESULT_VARIABLE error_code
OUTPUT_VARIABLE tag_sha
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(error_code)
message(FATAL_ERROR "Could not check the sha.")
endif()
if(NOT (${tag_sha} STREQUAL ${resulting_sha}))
message(FATAL_ERROR "UPDATE_COMMAND produced
${tag_sha}
when
${resulting_sha}
was expected."
)
endif()
if( NOT EXISTS ${FETCH_HEAD_file} AND ${fetch_expected})
message( FATAL_ERROR "Fetch did NOT occur when it was expected.")
endif()
if( EXISTS ${FETCH_HEAD_file} AND NOT ${fetch_expected})
message( FATAL_ERROR "Fetch DID occur when it was not expected.")
endif()
endmacro()
find_package(Git)
set(do_git_tests 0)
if(GIT_EXECUTABLE)
set(do_git_tests 1)
execute_process(
COMMAND "${GIT_EXECUTABLE}" --version
OUTPUT_VARIABLE ov
OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(REGEX REPLACE "^git version (.+)$" "\\1" git_version "${ov}")
message(STATUS "git_version='${git_version}'")
if(git_version VERSION_LESS 1.6.5)
message(STATUS "No ExternalProject git tests with git client less than version 1.6.5")
set(do_git_tests 0)
endif()
endif()
# When re-running tests locally, this ensures we always start afresh
file(REMOVE_RECURSE ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals)
if(do_git_tests)
check_a_tag(origin/master 5842b503ba4113976d9bb28d57b5aee1ad2736b7 1 REBASE)
check_a_tag(tag1 d1970730310fe8bc07e73f15dc570071f9f9654a 1 REBASE)
# With the Git UPDATE_COMMAND performance patch, this will not required a
# 'git fetch'
check_a_tag(tag1 d1970730310fe8bc07e73f15dc570071f9f9654a 0 REBASE)
check_a_tag(tag2 5842b503ba4113976d9bb28d57b5aee1ad2736b7 1 REBASE)
check_a_tag(d19707303 d1970730310fe8bc07e73f15dc570071f9f9654a 1 REBASE)
check_a_tag(d19707303 d1970730310fe8bc07e73f15dc570071f9f9654a 0 REBASE)
check_a_tag(origin/master 5842b503ba4113976d9bb28d57b5aee1ad2736b7 1 REBASE)
# This is a remote symbolic ref, so it will always trigger a 'git fetch'
check_a_tag(origin/master 5842b503ba4113976d9bb28d57b5aee1ad2736b7 1 REBASE)
foreach(strategy IN ITEMS CHECKOUT REBASE_CHECKOUT)
# Move local master back, then apply a change that will cause a conflict
# during rebase
execute_process(COMMAND ${GIT_EXECUTABLE} checkout master
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep1-GIT
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not reset local master back to tag1.")
endif()
execute_process(COMMAND ${GIT_EXECUTABLE} reset --hard tag1
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep1-GIT
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not reset local master back to tag1.")
endif()
set(cmlFile ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep1-GIT/CMakeLists.txt)
file(READ ${cmlFile} contents)
string(REPLACE "find TutorialConfig.h" "find TutorialConfig.h (conflict here)"
conflictingContent "${contents}"
)
file(WRITE ${cmlFile} "${conflictingContent}")
execute_process(COMMAND ${GIT_EXECUTABLE} commit -a -m "This should cause a conflict"
WORKING_DIRECTORY ${ExternalProjectUpdate_BINARY_DIR}/CMakeExternals/Source/TutorialStep1-GIT
RESULT_VARIABLE error_code
)
if(error_code)
message(FATAL_ERROR "Could not commit conflicting change.")
endif()
# This should discard our commit but leave behind an annotated tag
check_a_tag(origin/master 5842b503ba4113976d9bb28d57b5aee1ad2736b7 1 ${strategy})
endforeach()
endif()
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