Test: extracted executable Cpp11Tests

CMakeLists.txt

@@ -2,7 +2,7 @@
 # Copyright Benoit Blanchon 2014-2021
 # MIT License
 
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.3)
 
 project(ArduinoJson VERSION 6.18.0)
 

extras/CompileOptions.cmake

@@ -23,12 +23,6 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "(GNU|Clang)")
 		-Wundef
 	)
 
-	if(NOT MINGW)
-		add_compile_options(
-			-std=c++98
-		)
-	endif()
-
 	if(${COVERAGE})
 		set(CMAKE_CXX_FLAGS "-fprofile-arcs -ftest-coverage")
 	endif()

extras/tests/CMakeLists.txt

@@ -2,11 +2,15 @@
 # Copyright Benoit Blanchon 2014-2021
 # MIT License
 
+set(CMAKE_CXX_STANDARD 98)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
 add_subdirectory(catch)
 
 link_libraries(ArduinoJson catch)
 
 include_directories(Helpers)
+add_subdirectory(Cpp11)
 add_subdirectory(FailingBuilds)
 add_subdirectory(IntegrationTests)
 add_subdirectory(JsonArray)

extras/tests/Cpp11/CMakeLists.txt

@@ -0,0 +1,32 @@
+# ArduinoJson - https://arduinojson.org
+# Copyright Benoit Blanchon 2014-2021
+# 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(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/Cpp11/issue1120.cpp

@@ -2,40 +2,6 @@
 
 #include <catch.hpp>
 
-#if __cplusplus >= 201103L
-
-TEST_CASE("nullptr") {
-  DynamicJsonDocument doc(4096);
-  JsonVariant variant = doc.to<JsonVariant>();
-
-  SECTION("JsonVariant == nullptr") {
-    REQUIRE((variant == nullptr));
-    REQUIRE_FALSE((variant != nullptr));
-  }
-
-  SECTION("JsonVariant != nullptr") {
-    variant.set(42);
-
-    REQUIRE_FALSE((variant == nullptr));
-    REQUIRE((variant != nullptr));
-  }
-
-  SECTION("JsonVariant.set(nullptr)") {
-    variant.set(42);
-    variant.set(nullptr);
-
-    REQUIRE(variant.isNull());
-  }
-
-  SECTION("JsonVariant.is<nullptr_t>()") {
-    variant.set(42);
-    REQUIRE(variant.is<std::nullptr_t>() == false);
-
-    variant.clear();
-    REQUIRE(variant.is<std::nullptr_t>() == true);
-  }
-}
-
 TEST_CASE("Issue #1120") {
   StaticJsonDocument<500> doc;
   constexpr char str[] =
@@ -90,5 +56,3 @@ TEST_CASE("Issue #1120") {
     }
   }
 }
-
-#endif

extras/tests/Cpp11/nullptr.cpp

@@ -0,0 +1,39 @@
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+#if !ARDUINOJSON_HAS_NULLPTR
+#  error ARDUINOJSON_HAS_NULLPTR must be set to 1
+#endif
+
+TEST_CASE("nullptr") {
+  DynamicJsonDocument doc(4096);
+  JsonVariant variant = doc.to<JsonVariant>();
+
+  SECTION("JsonVariant == nullptr") {
+    REQUIRE((variant == nullptr));
+    REQUIRE_FALSE((variant != nullptr));
+  }
+
+  SECTION("JsonVariant != nullptr") {
+    variant.set(42);
+
+    REQUIRE_FALSE((variant == nullptr));
+    REQUIRE((variant != nullptr));
+  }
+
+  SECTION("JsonVariant.set(nullptr)") {
+    variant.set(42);
+    variant.set(nullptr);
+
+    REQUIRE(variant.isNull());
+  }
+
+  SECTION("JsonVariant.is<nullptr_t>()") {
+    variant.set(42);
+    REQUIRE(variant.is<std::nullptr_t>() == false);
+
+    variant.clear();
+    REQUIRE(variant.is<std::nullptr_t>() == true);
+  }
+}

extras/tests/MixedConfiguration/CMakeLists.txt

@@ -2,11 +2,7 @@
 # Copyright Benoit Blanchon 2014-2021
 # MIT License
 
-# we need C++11 for 'long long'
-set(CMAKE_CXX_STANDARD 11)
-
 add_executable(MixedConfigurationTests
-	cpp11.cpp
 	decode_unicode_0.cpp
 	decode_unicode_1.cpp
 	enable_alignment_0.cpp
@@ -22,8 +18,6 @@ add_executable(MixedConfigurationTests
 	enable_string_deduplication_1.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/MixedConfiguration/enable_infinity_0.cpp

@@ -6,7 +6,7 @@
 
 static void assertParseFails(const char* json) {
   DynamicJsonDocument doc(4096);
-  auto err = deserializeJson(doc, json);
+  DeserializationError err = deserializeJson(doc, json);
 
   REQUIRE(err == DeserializationError::InvalidInput);
 }

extras/tests/MixedConfiguration/enable_infinity_1.cpp

@@ -22,7 +22,8 @@ TEST_CASE("ARDUINOJSON_ENABLE_INFINITY == 1") {
   }
 
   SECTION("deserializeJson()") {
-    auto err = deserializeJson(doc, "[Infinity,-Infinity,+Infinity]");
+    DeserializationError err =
+        deserializeJson(doc, "[Infinity,-Infinity,+Infinity]");
     float a = doc[0];
     float b = doc[1];
     float c = doc[2];

extras/tests/MixedConfiguration/enable_nan_0.cpp

@@ -18,7 +18,7 @@ TEST_CASE("ARDUINOJSON_ENABLE_NAN == 0") {
   }
 
   SECTION("deserializeJson()") {
-    auto err = deserializeJson(doc, "{\"X\":NaN}");
+    DeserializationError err = deserializeJson(doc, "{\"X\":NaN}");
 
     REQUIRE(err == DeserializationError::InvalidInput);
   }

extras/tests/MixedConfiguration/enable_nan_1.cpp

@@ -22,7 +22,7 @@ TEST_CASE("ARDUINOJSON_ENABLE_NAN == 1") {
   }
 
   SECTION("deserializeJson()") {
-    auto err = deserializeJson(doc, "{\"X\":NaN}");
+    DeserializationError err = deserializeJson(doc, "{\"X\":NaN}");
     float x = doc["X"];
 
     REQUIRE(err == DeserializationError::Ok);

src/ArduinoJson/Configuration.hpp

@@ -6,14 +6,20 @@
 
 #if __cplusplus >= 201103L
 #  define ARDUINOJSON_HAS_LONG_LONG 1
-#  define ARDUINOJSON_HAS_NULLPTR 1
 #  define ARDUINOJSON_HAS_RVALUE_REFERENCES 1
 #else
 #  define ARDUINOJSON_HAS_LONG_LONG 0
-#  define ARDUINOJSON_HAS_NULLPTR 0
 #  define ARDUINOJSON_HAS_RVALUE_REFERENCES 0
 #endif
 
+#ifndef ARDUINOJSON_HAS_NULLPTR
+#  if __cplusplus >= 201103L
+#    define ARDUINOJSON_HAS_NULLPTR 1
+#  else
+#    define ARDUINOJSON_HAS_NULLPTR 0
+#  endif
+#endif
+
 #if defined(_MSC_VER) && !ARDUINOJSON_HAS_LONG_LONG
 #  define ARDUINOJSON_HAS_INT64 1
 #else