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#
# Boost Software License - Version 1.0 - August 17th, 2003
#
# Permission is hereby granted, free of charge, to any person or organization
# obtaining a copy of the software and accompanying documentation covered by
# this license (the "Software") to use, reproduce, display, distribute,
# execute, and transmit the Software, and to prepare derivative works of the
# Software, and to permit third-parties to whom the Software is furnished to
# do so, all subject to the following:
#
# The copyright notices in the Software and this entire statement, including
# the above license grant, this restriction and the following disclaimer,
# must be included in all copies of the Software, in whole or in part, and
# all derivative works of the Software, unless such copies or derivative
# works are solely in the form of machine-executable object code generated by
# a source language processor.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
# SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
# FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
# 2012-01-31, Lars Bilke
# - Enable Code Coverage
#
# 2013-09-17, Joakim Söderberg
# - Added support for Clang.
# - Some additional usage instructions.
#
# 2016-11-02, Azat Khuzhin
# - Adopt for C compiler only (libevent)
#
# USAGE:
# 1. Copy this file into your cmake modules path.
#
# 2. Add the following line to your CMakeLists.txt:
# INCLUDE(CodeCoverage)
#
# 3. Set compiler flags to turn off optimization and enable coverage:
# SET(CMAKE_CXX_FLAGS "-g -O0 -fprofile-arcs -ftest-coverage")
# SET(CMAKE_C_FLAGS "-g -O0 -fprofile-arcs -ftest-coverage")
#
# 3. Use the function SETUP_TARGET_FOR_COVERAGE to create a custom make target
# which runs your test executable and produces a lcov code coverage report:
# Example:
# SETUP_TARGET_FOR_COVERAGE(
# my_coverage_target # Name for custom target.
# test_driver # Name of the test driver executable that runs the tests.
# # NOTE! This should always have a ZERO as exit code
# # otherwise the coverage generation will not complete.
# coverage # Name of output directory.
# )
#
# 4. Build a Debug build:
# cmake -DCMAKE_BUILD_TYPE=Debug ..
# make
# make my_coverage_target
#
#
# Check prereqs
FIND_PROGRAM( GCOV_PATH gcov )
FIND_PROGRAM( LCOV_PATH lcov )
FIND_PROGRAM( GENHTML_PATH genhtml )
FIND_PROGRAM( GCOVR_PATH gcovr PATHS ${CMAKE_SOURCE_DIR}/tests)
IF(NOT GCOV_PATH)
MESSAGE(FATAL_ERROR "gcov not found! Aborting...")
ENDIF() # NOT GCOV_PATH
IF(NOT CMAKE_COMPILER_IS_GNUCC)
# Clang version 3.0.0 and greater now supports gcov as well.
MESSAGE(WARNING "Compiler is not GNU gcc! Clang Version 3.0.0 and greater supports gcov as well, but older versions don't.")
IF(NOT "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
MESSAGE(FATAL_ERROR "Compiler is not GNU gcc! Aborting...")
ENDIF()
ENDIF() # NOT CMAKE_COMPILER_IS_GNUCC
IF ( NOT CMAKE_BUILD_TYPE STREQUAL "Debug" )
MESSAGE( WARNING "Code coverage results with an optimized (non-Debug) build may be misleading" )
ENDIF() # NOT CMAKE_BUILD_TYPE STREQUAL "Debug"
# Param _targetname The name of new the custom make target
# Param _testrunner The name of the target which runs the tests.
# MUST return ZERO always, even on errors.
# If not, no coverage report will be created!
# Param _outputname lcov output is generated as _outputname.info
# HTML report is generated in _outputname/index.html
# Optional fourth parameter is passed as arguments to _testrunner
# Pass them in list form, e.g.: "-j;2" for -j 2
FUNCTION(SETUP_TARGET_FOR_COVERAGE _targetname _testrunner _outputname)
IF(NOT LCOV_PATH)
MESSAGE(FATAL_ERROR "lcov not found! Aborting...")
ENDIF() # NOT LCOV_PATH
IF(NOT GENHTML_PATH)
MESSAGE(FATAL_ERROR "genhtml not found! Aborting...")
ENDIF() # NOT GENHTML_PATH
# Setup target
ADD_CUSTOM_TARGET(${_targetname}
# Cleanup lcov
${LCOV_PATH} --directory . --zerocounters
# Run tests
COMMAND ${_testrunner} ${ARGV3}
# Capturing lcov counters and generating report
COMMAND ${LCOV_PATH} --directory . --capture --output-file ${_outputname}.info
COMMAND ${LCOV_PATH} --remove ${_outputname}.info 'tests/*' '/usr/*' --output-file ${_outputname}.info.cleaned
COMMAND ${GENHTML_PATH} -o ${_outputname} ${_outputname}.info.cleaned
COMMAND ${CMAKE_COMMAND} -E remove ${_outputname}.info ${_outputname}.info.cleaned
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
COMMENT "Resetting code coverage counters to zero.\nProcessing code coverage counters and generating report."
)
# Show info where to find the report
ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
COMMAND ;
COMMENT "Open ./${_outputname}/index.html in your browser to view the coverage report."
)
ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE
# Param _targetname The name of new the custom make target
# Param _testrunner The name of the target which runs the tests
# Param _outputname cobertura output is generated as _outputname.xml
# Optional fourth parameter is passed as arguments to _testrunner
# Pass them in list form, e.g.: "-j;2" for -j 2
FUNCTION(SETUP_TARGET_FOR_COVERAGE_COBERTURA _targetname _testrunner _outputname)
IF(NOT PYTHON_EXECUTABLE)
MESSAGE(FATAL_ERROR "Python not found! Aborting...")
ENDIF() # NOT PYTHON_EXECUTABLE
IF(NOT GCOVR_PATH)
MESSAGE(FATAL_ERROR "gcovr not found! Aborting...")
ENDIF() # NOT GCOVR_PATH
ADD_CUSTOM_TARGET(${_targetname}
# Run tests
${_testrunner} ${ARGV3}
# Running gcovr
COMMAND ${GCOVR_PATH} -x -r ${CMAKE_SOURCE_DIR} -e '${CMAKE_SOURCE_DIR}/tests/' -o ${_outputname}.xml
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
COMMENT "Running gcovr to produce Cobertura code coverage report."
)
# Show info where to find the report
ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
COMMAND ;
COMMENT "Cobertura code coverage report saved in ${_outputname}.xml."
)
ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE_COBERTURA
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