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Add CMake function to associate macros with C++ standards

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Add and use the following CMake function:

  json_test_add_standard_keyphrases(
      PHRASES <args>...
      CXX_STANDARDS <args>...)

  Create a mapping between C++ standard versions and key phrases.

  json_test_add_test_for() will search for these key phrases and build
  tests for associated C++ standard versions.
This commit is contained in:
Florian Albrechtskirchinger 2022-05-09 19:03:22 +02:00
parent 22cd1c9eb9
commit a76b2c5229
No known key found for this signature in database
GPG Key ID: 19618CE9B2D4BE6D
2 changed files with 56 additions and 2 deletions
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42
cmake/test.cmake
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@ -42,6 +42,37 @@ endforeach()
# test functions
#############################################################################
#############################################################################
# json_test_add_standard_keyphrases(
# PHRASES <args>...
# CXX_STANDARDS <args>...)
#
# Create a mapping between C++ standard versions and key phrases.
#
# json_test_add_test_for() will search for these key phrases and build tests
# for associated C++ standard versions.
#############################################################################
function(json_test_add_standard_keyphrases)
cmake_parse_arguments(args "" ""
"CXX_STANDARDS;PHRASES"
${ARGN})
if(NOT args_PHRASES)
message(FATAL_ERROR "At least one key phrase is required.")
endif()
if(NOT args_CXX_STANDARDS)
message(FATAL_ERROR "At least one C++ standard version is required.")
endif()
foreach(cxx_standard ${args_CXX_STANDARDS})
set(var _JSON_TEST_STANDARD_KEYPHRASES_CPP_${cxx_standard})
list(APPEND ${var} ${args_PHRASES})
set(${var} CACHE INTERNAL "Mapping of key phrases to C++ standard version ${cxx_standard}")
endforeach()
endfunction()
#############################################################################
# json_test_set_test_options(
# all|<tests>
@ -233,8 +264,15 @@ function(json_test_add_test_for file)
# add unconditionally if C++11 (default) or forced
if(NOT ("${cxx_standard}" STREQUAL 11 OR args_FORCE))
string(FIND "${file_content}" JSON_HAS_CPP_${cxx_standard} has_cpp_found)
if(${has_cpp_found} EQUAL -1)
set(build FALSE)
foreach(phrase JSON_HAS_CPP_${cxx_standard} ${_JSON_TEST_STANDARD_KEYPHRASES_CPP_${cxx_standard}})
string(FIND "${file_content}" ${phrase} phrase_found)
if(NOT ${phrase_found} EQUAL -1)
set(build TRUE)
break()
endif()
endforeach()
if(NOT build)
continue()
endif()
endif()

16
tests/CMakeLists.txt
View File

@ -94,6 +94,22 @@ json_test_set_test_options(test-disabled_exceptions
# raise timeout of expensive Unicode test
json_test_set_test_options(test-unicode4 TEST_PROPERTIES TIMEOUT 3000)
#############################################################################
# define additional macro to C++ standard version mappings
#############################################################################
json_test_add_standard_keyphrases(
PHRASES
JSON_HAS_EXPERIMENTAL_FILESYSTEM
JSON_HAS_FILESYSTEM
CXX_STANDARDS 17)
json_test_add_standard_keyphrases(
PHRASES
JSON_HAS_RANGES
JSON_HAS_THREE_WAY_COMPARISON
CXX_STANDARDS 20)
#############################################################################
# add unit tests
#############################################################################