Run all tests with C++11 enabled (#1820)

README.md

@@ -46,7 +46,8 @@ ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
     * Supports [custom converters](https://arduinojson.org/news/2021/05/04/version-6-18-0/)
 * Portable
     * Usable on any C++ project (not limited to Arduino)
-    * Compatible with C++98, C++11, C++14 and C++17
+    * Compatible with C++11, C++14 and C++17
+    * Support for C++98/C++03 available on [ArduinoJson 6.20.x](https://github.com/bblanchon/ArduinoJson/tree/6.20.x)
     * Zero warnings with `-Wall -Wextra -pedantic` and `/W4`
     * [Header-only library](https://en.wikipedia.org/wiki/Header-only)
     * Works with virtually any board

extras/tests/CMakeLists.txt

@@ -2,7 +2,7 @@
 # Copyright © 2014-2022, Benoit BLANCHON
 # MIT License
 
-set(CMAKE_CXX_STANDARD 98)
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 add_subdirectory(catch)
@@ -10,7 +10,6 @@ add_subdirectory(catch)
 link_libraries(ArduinoJson catch)
 
 include_directories(Helpers)
-add_subdirectory(Cpp11)
 add_subdirectory(Cpp17)
 add_subdirectory(Cpp20)
 add_subdirectory(FailingBuilds)

extras/tests/Cpp11/CMakeLists.txt

@@ -1,36 +0,0 @@
-# ArduinoJson - https://arduinojson.org
-# Copyright © 2014-2022, Benoit BLANCHON
-# MIT License
-
-if("cxx_nullptr" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
-	list(APPEND SOURCES nullptr.cpp)
-	add_definitions(-DARDUINOJSON_HAS_NULLPTR=1)
-endif()
-
-if("cxx_auto_type" IN_LIST CMAKE_CXX_COMPILE_FEATURES AND "cxx_constexpr" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
-	list(APPEND SOURCES issue1120.cpp)
-endif()
-
-if("cxx_long_long_type" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
-	list(APPEND SOURCES use_long_long_0.cpp use_long_long_1.cpp)
-endif()
-
-if("cxx_range_for" IN_LIST CMAKE_CXX_COMPILE_FEATURES AND "cxx_generalized_initializers" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
-	list(APPEND SOURCES stl_containers.cpp)
-endif()
-
-if(NOT SOURCES)
-	return()
-endif()
-
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
-add_executable(Cpp11Tests ${SOURCES})
-
-add_test(Cpp11 Cpp11Tests)
-
-set_tests_properties(Cpp11
-	PROPERTIES
-		LABELS "Catch"
-)

extras/tests/FailingBuilds/CMakeLists.txt

@@ -31,11 +31,9 @@ add_executable(Issue1189 Issue1189.cpp)
 build_should_fail(Issue1189)
 
 add_executable(read_long_long read_long_long.cpp)
-set_property(TARGET read_long_long PROPERTY CXX_STANDARD 11)
 build_should_fail(read_long_long)
 
 add_executable(write_long_long write_long_long.cpp)
-set_property(TARGET write_long_long PROPERTY CXX_STANDARD 11)
 build_should_fail(write_long_long)
 
 add_executable(delete_jsondocument delete_jsondocument.cpp)

extras/tests/FailingBuilds/read_long_long.cpp

@@ -9,10 +9,6 @@
 #  error This test requires sizeof(long) < 8
 #endif
 
-#if !ARDUINOJSON_HAS_LONG_LONG
-#  error This test requires C++11
-#endif
-
 ARDUINOJSON_ASSERT_INTEGER_TYPE_IS_SUPPORTED(long long)
 int main() {
   DynamicJsonDocument doc(1024);

extras/tests/JsonDocument/CMakeLists.txt

@@ -12,6 +12,7 @@ add_executable(JsonDocumentTests
 	DynamicJsonDocument.cpp
 	ElementProxy.cpp
 	isNull.cpp
+	issue1120.cpp
 	MemberProxy.cpp
 	nesting.cpp
 	overflowed.cpp

extras/tests/JsonVariant/CMakeLists.txt

@@ -16,12 +16,14 @@ add_executable(JsonVariantTests
 	memoryUsage.cpp
 	misc.cpp
 	nesting.cpp
+	nullptr.cpp
 	or.cpp
 	overflow.cpp
 	remove.cpp
 	set.cpp
 	shallowCopy.cpp
 	size.cpp
+	stl_containers.cpp
 	subscript.cpp
 	types.cpp
 	unbound.cpp

extras/tests/MixedConfiguration/CMakeLists.txt

@@ -19,6 +19,8 @@ add_executable(MixedConfigurationTests
 	issue1707.cpp
 	use_double_0.cpp
 	use_double_1.cpp
+	use_long_long_0.cpp
+	use_long_long_1.cpp
 )
 
 set_target_properties(MixedConfigurationTests PROPERTIES UNITY_BUILD OFF)

extras/tests/Numbers/CMakeLists.txt

@@ -2,9 +2,6 @@
 # Copyright © 2014-2022, Benoit BLANCHON
 # MIT License
 
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED OFF)
-
 add_executable(NumbersTests
 	convertNumber.cpp
 	parseFloat.cpp