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1option(JSON_Sanitizer "Build test suite with Clang sanitizer" OFF)
2option(JSON_Valgrind "Execute test suite with Valgrind" OFF)
3option(JSON_NoExceptions "Build test suite without exceptions" OFF)
4option(JSON_Coverage "Build test suite with coverage information" OFF)
5
6# download test data
7include(${CMAKE_CURRENT_SOURCE_DIR}/../cmake/download_test_data.cmake)
8
9# test fixture to download test data
10add_test(NAME "download_test_data" COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target download_test_data)
11set_tests_properties(download_test_data PROPERTIES FIXTURES_SETUP TEST_DATA)
12
13if(JSON_Sanitizer)
14    message(STATUS "Building test suite with Clang sanitizer")
15    if(NOT MSVC)
16        set(CMAKE_CXX_FLAGS "-g -O0 -fsanitize=address -fsanitize=undefined -fsanitize=integer -fsanitize=nullability -fno-omit-frame-pointer -fno-sanitize-recover=all -fsanitize-recover=unsigned-integer-overflow")
17    endif()
18endif()
19
20if(JSON_Valgrind)
21    find_program(CMAKE_MEMORYCHECK_COMMAND valgrind)
22    message(STATUS "Executing test suite with Valgrind (${CMAKE_MEMORYCHECK_COMMAND})")
23    set(memcheck_command "${CMAKE_MEMORYCHECK_COMMAND} ${CMAKE_MEMORYCHECK_COMMAND_OPTIONS} --error-exitcode=1 --leak-check=full")
24    separate_arguments(memcheck_command)
25endif()
26
27if(JSON_NoExceptions)
28    message(STATUS "Building test suite without exceptions")
29    if(NOT MSVC)
30        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DJSON_NOEXCEPTION")
31    endif()
32    set(DOCTEST_TEST_FILTER --no-throw)
33endif()
34
35if(JSON_Coverage)
36    message(STATUS "Building test suite with coverage information")
37
38    # from https://github.com/RWTH-HPC/CMake-codecov/blob/master/cmake/FindGcov.cmake
39    get_filename_component(COMPILER_PATH "${CMAKE_CXX_COMPILER}" PATH)
40    string(REGEX MATCH "^[0-9]+" GCC_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
41    find_program(GCOV_BIN NAMES gcov-${GCC_VERSION} gcov HINTS ${COMPILER_PATH})
42
43    # collect all source files from the chosen include dir
44    file(GLOB_RECURSE SOURCE_FILES ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}*.hpp)
45
46    # add target to collect coverage information and generate HTML file
47    # (filter script from https://stackoverflow.com/a/43726240/266378)
48    add_custom_target(lcov_html
49        COMMAND lcov --directory . --capture --output-file json.info --rc lcov_branch_coverage=1
50        COMMAND lcov -e json.info ${SOURCE_FILES} --output-file json.info.filtered --gcov-tool ${GCOV_BIN} --rc lcov_branch_coverage=1
51        COMMAND ${CMAKE_SOURCE_DIR}/test/thirdparty/imapdl/filterbr.py json.info.filtered > json.info.filtered.noexcept
52        COMMAND genhtml --title "JSON for Modern C++" --legend --demangle-cpp --output-directory html --show-details --branch-coverage json.info.filtered.noexcept
53        COMMENT "Generating HTML report test/html/index.html"
54    )
55endif()
56
57#############################################################################
58# doctest library with the main function to speed up build
59#############################################################################
60
61add_library(doctest_main OBJECT src/unit.cpp)
62set_target_properties(doctest_main PROPERTIES
63    COMPILE_DEFINITIONS "$<$<CXX_COMPILER_ID:MSVC>:_SCL_SECURE_NO_WARNINGS>"
64    COMPILE_OPTIONS "$<$<CXX_COMPILER_ID:MSVC>:/EHsc;$<$<CONFIG:Release>:/Od>>"
65)
66if (${CMAKE_VERSION} VERSION_LESS "3.8.0")
67    target_compile_features(doctest_main PUBLIC cxx_range_for)
68else()
69    target_compile_features(doctest_main PUBLIC cxx_std_11)
70endif()
71target_include_directories(doctest_main PRIVATE "thirdparty/doctest")
72
73# https://stackoverflow.com/questions/2368811/how-to-set-warning-level-in-cmake
74if(MSVC)
75    # Force to always compile with W4
76    if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
77        string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
78    else()
79        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
80    endif()
81
82	# Disable warning C4566: character represented by universal-character-name '\uFF01' cannot be represented in the current code page (1252)
83	# Disable warning C4996: 'nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,nlohmann::adl_serializer>::operator <<': was declared deprecated
84    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4566 /wd4996")
85
86	# https://github.com/nlohmann/json/issues/1114
87	set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /bigobj")
88endif()
89
90#############################################################################
91# one executable for each unit test file
92#############################################################################
93
94set(files
95    src/unit-algorithms.cpp
96    src/unit-allocator.cpp
97    src/unit-alt-string.cpp
98    src/unit-assert_macro.cpp
99    src/unit-bson.cpp
100    src/unit-capacity.cpp
101    src/unit-cbor.cpp
102    src/unit-class_const_iterator.cpp
103    src/unit-class_iterator.cpp
104    src/unit-class_lexer.cpp
105    src/unit-class_parser.cpp
106    src/unit-comparison.cpp
107    src/unit-concepts.cpp
108    src/unit-constructor1.cpp
109    src/unit-constructor2.cpp
110    src/unit-convenience.cpp
111    src/unit-conversions.cpp
112    src/unit-deserialization.cpp
113    src/unit-element_access1.cpp
114    src/unit-element_access2.cpp
115    src/unit-hash.cpp
116    src/unit-inspection.cpp
117    src/unit-items.cpp
118    src/unit-iterators1.cpp
119    src/unit-iterators2.cpp
120    src/unit-json_patch.cpp
121    src/unit-json_pointer.cpp
122    src/unit-large_json.cpp
123    src/unit-merge_patch.cpp
124    src/unit-meta.cpp
125    src/unit-modifiers.cpp
126    src/unit-msgpack.cpp
127    src/unit-noexcept.cpp
128    src/unit-ordered_json.cpp
129    src/unit-ordered_map.cpp
130    src/unit-pointer_access.cpp
131    src/unit-readme.cpp
132    src/unit-reference_access.cpp
133    src/unit-regression1.cpp
134    src/unit-regression2.cpp
135    src/unit-serialization.cpp
136    src/unit-testsuites.cpp
137    src/unit-to_chars.cpp
138    src/unit-ubjson.cpp
139    src/unit-udt.cpp
140    src/unit-udt_macro.cpp
141    src/unit-unicode.cpp
142    src/unit-user_defined_input.cpp
143    src/unit-wstring.cpp)
144
145foreach(file ${files})
146    get_filename_component(file_basename ${file} NAME_WE)
147    string(REGEX REPLACE "unit-([^$]+)" "test-\\1" testcase ${file_basename})
148
149    add_executable(${testcase} $<TARGET_OBJECTS:doctest_main> ${file})
150    target_compile_definitions(${testcase} PRIVATE DOCTEST_CONFIG_SUPER_FAST_ASSERTS)
151    target_compile_options(${testcase} PRIVATE
152        $<$<CXX_COMPILER_ID:MSVC>:/EHsc;$<$<CONFIG:Release>:/Od>>
153        $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
154        $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
155    )
156    target_include_directories(${testcase} PRIVATE ${CMAKE_BINARY_DIR}/include thirdparty/doctest thirdparty/fifo_map)
157    target_link_libraries(${testcase} PRIVATE ${NLOHMANN_JSON_TARGET_NAME})
158
159    if (JSON_Coverage)
160        target_compile_options(${testcase} PRIVATE --coverage)
161        target_link_libraries(${testcase} PRIVATE --coverage)
162    endif()
163
164    add_test(NAME "${testcase}"
165        COMMAND ${testcase} ${DOCTEST_TEST_FILTER} --no-skip
166        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
167    )
168    set_tests_properties("${testcase}" PROPERTIES LABELS "all" FIXTURES_REQUIRED TEST_DATA)
169
170    if(JSON_Valgrind)
171        add_test(NAME "${testcase}_valgrind"
172            COMMAND ${memcheck_command} ${CMAKE_CURRENT_BINARY_DIR}/${testcase} ${DOCTEST_TEST_FILTER}
173            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
174        )
175        set_tests_properties("${testcase}_valgrind" PROPERTIES LABELS "valgrind")
176    endif()
177endforeach()
178
179add_executable(json_unit EXCLUDE_FROM_ALL $<TARGET_OBJECTS:doctest_main> ${files})
180target_compile_definitions(json_unit PRIVATE DOCTEST_CONFIG_SUPER_FAST_ASSERTS)
181target_compile_options(json_unit PRIVATE
182    $<$<CXX_COMPILER_ID:MSVC>:/EHsc;$<$<CONFIG:Release>:/Od>>
183    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
184    $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
185)
186target_include_directories(json_unit PRIVATE ${CMAKE_BINARY_DIR}/include thirdparty/doctest thirdparty/fifo_map)
187target_link_libraries(json_unit ${NLOHMANN_JSON_TARGET_NAME})
188add_dependencies(json_unit download_test_data)
189
190#############################################################################
191# Test the generated build configs
192#############################################################################
193
194add_subdirectory(cmake_import)
195add_subdirectory(cmake_import_minver)
196add_subdirectory(cmake_add_subdirectory)
197add_subdirectory(cmake_fetch_content)
198add_subdirectory(cmake_target_include_directories)
199