summaryrefslogtreecommitdiff
path: root/cmake/Modules/CodeCoverage.cmake
blob: 4ff5851c77b6d58ce952d05608d86776d326da1f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
# Copyright (c) 2012 - 2015, Lars Bilke
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
#    may be used to endorse or promote products derived from this software without
#    specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
#
# 2012-01-31, Lars Bilke
# - Enable Code Coverage
#
# 2013-09-17, Joakim Söderberg
# - Added support for Clang.
# - Some additional usage instructions.
#
# USAGE:

# 0. (Mac only) If you use Xcode 5.1 make sure to patch geninfo as described here:
#      http://stackoverflow.com/a/22404544/80480
#
# 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)

# Display an error when the target is called. If no error is found, this
# function will be overridden by the real one later in this file
FUNCTION(SETUP_TARGET_FOR_COVERAGE _targetname _testrunner _outputname)
	ADD_CUSTOM_TARGET(${_targetname}
          COMMAND echo "Coverage is not available: ${ERROR_MSG}"
	)
ENDFUNCTION()

IF(NOT GCOV_PATH)
  set(ERROR_MSG "gcov not found")
  return()
ENDIF()
MARK_AS_ADVANCED(GCOV_PATH)
IF(NOT LCOV_PATH)
  set(ERROR_MSG "lcov not found")
  return()
ENDIF()
MARK_AS_ADVANCED(LCOV_PATH)
IF(NOT GENHTML_PATH)
  set(ERROR_MSG "genhtml not found")
  return()
ENDIF()
MARK_AS_ADVANCED(GENHTML_PATH)
IF(NOT CMAKE_COMPILER_IS_GNUCXX)
  set(ERROR_MSG "Compiler is not gcc")
  return()
ENDIF()

SET(CMAKE_CXX_FLAGS_COVERAGE
    "-g -O0 --coverage -fprofile-arcs -ftest-coverage"
    CACHE STRING "Flags used by the C++ compiler during coverage builds."
    FORCE )
SET(CMAKE_C_FLAGS_COVERAGE
    "-g -O0 --coverage -fprofile-arcs -ftest-coverage"
    CACHE STRING "Flags used by the C compiler during coverage builds."
    FORCE )
SET(CMAKE_EXE_LINKER_FLAGS_COVERAGE
    ""
    CACHE STRING "Flags used for linking binaries during coverage builds."
    FORCE )
SET(CMAKE_SHARED_LINKER_FLAGS_COVERAGE
    ""
    CACHE STRING "Flags used by the shared libraries linker during coverage builds."
    FORCE )
MARK_AS_ADVANCED(
    CMAKE_CXX_FLAGS_COVERAGE
    CMAKE_C_FLAGS_COVERAGE
    CMAKE_EXE_LINKER_FLAGS_COVERAGE
    CMAKE_SHARED_LINKER_FLAGS_COVERAGE )

IF ( NOT (CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "Coverage"))
  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 fifth 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)

	# Setup target
	ADD_CUSTOM_TARGET(${_targetname}

		# Cleanup lcov
		COMMAND ${LCOV_PATH} --directory . --zerocounters

                # Create baseline coverage data file
                COMMAND ${LCOV_PATH} -c -i -d . -o ${_outputname}.baseline.info -q

		# Run tests
		COMMAND ${_testrunner} ${ARGV3}

		# Capturing lcov counters and generating report
		COMMAND ${LCOV_PATH} --directory . --capture --output-file ${_outputname}.info -q
                # Combine the baseline and the test data
                COMMAND ${LCOV_PATH} -a ${_outputname}.info -a ${_outputname}.baseline.info -o ${_outputname}.info -q

                # Remove information about source files that are not part of
                # the test (system file, external libraries, etc)
		COMMAND ${LCOV_PATH} --remove ${_outputname}.info 'tests/*' '/usr/*' 'external/*' 'build/*' --output-file ${_outputname}.info.cleaned -q

                # Generate the report
		COMMAND ${GENHTML_PATH} -o ${_outputname} ${_outputname}.info.cleaned

                # Clean the temporary files we created
		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
        MARK_AS_ADVANCED(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