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# Creates the coverage target for test coverage analysis
# Requires HAVE_GCOV to be set (from dependencies/gcov.cmake)
# Uses HAVE_LCOV for optional HTML generation (from dependencies/lcov.cmake)
# Filter patterns for lcov --remove
set(LCOV_FILTERS '*_test.c' '*.h')
# Ignore inconsistent coverage: legitimate gaps in error paths and
# edge cases that are difficult to exercise in unit tests.
function(get_html_coverage_commands OUTPUT_VAR)
if(HAVE_LCOV)
set(COMMANDS
COMMAND ${LCOV_PATH}
--capture --directory .
--output-file coverage.info
> /dev/null 2>&1
COMMAND ${LCOV_PATH}
--remove coverage.info ${LCOV_FILTERS}
--output-file coverage_filtered.info
--ignore-errors inconsistent
> /dev/null 2>&1
COMMAND ${GENHTML_PATH}
coverage_filtered.info
--output-directory coverage_html
> /dev/null 2>&1
COMMAND ${CMAKE_COMMAND} -E echo ""
COMMAND ${CMAKE_COMMAND} -E echo "HTML report: ${CMAKE_BINARY_DIR}/coverage_html/index.html"
COMMAND ${CMAKE_COMMAND} -E echo ""
)
set(${OUTPUT_VAR} "${COMMANDS}" PARENT_SCOPE)
else()
set(${OUTPUT_VAR} "" PARENT_SCOPE)
endif()
endfunction()
function(create_informational_target)
# MESSAGE lines are passed as ARGV, last arg is COMMENT
list(LENGTH ARGV NUM_ARGS)
math(EXPR COMMENT_IDX "${NUM_ARGS} - 1")
list(GET ARGV ${COMMENT_IDX} COMMENT_TEXT)
# Build command list
set(COMMANDS
COMMAND ${CMAKE_COMMAND} -E echo ""
)
foreach(i RANGE 0 ${COMMENT_IDX})
if(NOT i EQUAL ${COMMENT_IDX})
list(GET ARGV ${i} LINE)
list(APPEND COMMANDS COMMAND ${CMAKE_COMMAND} -E echo "${LINE}")
endif()
endforeach()
list(APPEND COMMANDS COMMAND ${CMAKE_COMMAND} -E echo "")
add_custom_target(coverage
${COMMANDS}
COMMENT "${COMMENT_TEXT}"
)
endfunction()
macro(create_coverage_target)
if(HAVE_GCOV AND ENABLE_COVERAGE)
get_html_coverage_commands(HTML_COVERAGE_COMMANDS)
add_custom_target(coverage
COMMAND ${CMAKE_CTEST_COMMAND} -D ExperimentalStart > /dev/null 2>&1
COMMAND ${CMAKE_CTEST_COMMAND} -D ExperimentalConfigure > /dev/null 2>&1
COMMAND ${CMAKE_CTEST_COMMAND} -D ExperimentalBuild > /dev/null 2>&1
COMMAND ${CMAKE_CTEST_COMMAND} -D ExperimentalTest > /dev/null 2>&1
COMMAND ${CMAKE_CTEST_COMMAND} -D ExperimentalCoverage > /dev/null 2>&1
COMMAND ${CMAKE_COMMAND}
-DPROJECT_SOURCE_DIR=${CMAKE_SOURCE_DIR}
-DPROJECT_BINARY_DIR=${CMAKE_BINARY_DIR}
-P ${CMAKE_SOURCE_DIR}/cmake/utils/PrintCoverage.cmake
${HTML_COVERAGE_COMMANDS}
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
DEPENDS build_tests
COMMENT "Running tests with coverage analysis using CTest"
)
elseif(HAVE_GCOV)
create_informational_target(
"Coverage is currently disabled"
"To enable coverage analysis, reconfigure with"
" cmake -DDISABLE_COVERAGE=OFF .."
"Coverage disabled"
)
message(STATUS "Coverage disabled. Use 'make coverage' for instructions to enable.")
else()
create_informational_target(
"Coverage analysis is not available"
"Install gcov to enable coverage support"
"Coverage not available"
)
endif()
endmacro()
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