Allow mixed configuration in compilation units (issue #809)

test/MixedConfiguration/CMakeLists.txt

@@ -0,0 +1,16 @@
+# ArduinoJson - arduinojson.org
+# Copyright Benoit Blanchon 2014-2018
+# MIT License
+
+# we need C++11 for 'long long'
+set(CMAKE_CXX_STANDARD 11)
+
+add_executable(MixedConfigurationTests
+	use_double_0.cpp
+	use_double_1.cpp
+	use_long_long_0.cpp
+	use_long_long_1.cpp
+)
+
+target_link_libraries(MixedConfigurationTests catch)
+add_test(MixedConfiguration MixedConfigurationTests)

test/MixedConfiguration/use_double_0.cpp

@@ -0,0 +1,17 @@
+#define ARDUINOJSON_USE_DOUBLE 0
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+TEST_CASE("ARDUINOJSON_USE_DOUBLE == 0") {
+  DynamicJsonDocument doc;
+  JsonObject root = doc.to<JsonObject>();
+
+  root["pi"] = 3.14;
+  root["e"] = 2.72;
+
+  std::string json;
+  serializeJson(doc, json);
+
+  REQUIRE(json == "{\"pi\":3.14,\"e\":2.72}");
+}

test/MixedConfiguration/use_double_1.cpp

@@ -0,0 +1,17 @@
+#define ARDUINOJSON_USE_DOUBLE 1
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+TEST_CASE("ARDUINOJSON_USE_DOUBLE == 1") {
+  DynamicJsonDocument doc;
+  JsonObject root = doc.to<JsonObject>();
+
+  root["pi"] = 3.14;
+  root["e"] = 2.72;
+
+  std::string json;
+  serializeJson(doc, json);
+
+  REQUIRE(json == "{\"pi\":3.14,\"e\":2.72}");
+}

test/MixedConfiguration/use_long_long_0.cpp

@@ -0,0 +1,30 @@
+#define ARDUINOJSON_USE_LONG_LONG 0
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+template <size_t size_of_long>
+std::string get_expected_json();
+
+template <>
+std::string get_expected_json<4>() {
+  return "{\"A\":2899336981,\"B\":2129924785}";
+}
+
+template <>
+std::string get_expected_json<8>() {
+  return "{\"A\":123456789123456789,\"B\":987654321987654321}";
+}
+
+TEST_CASE("ARDUINOJSON_USE_LONG_LONG == 0") {
+  DynamicJsonDocument doc;
+  JsonObject root = doc.to<JsonObject>();
+
+  root["A"] = 123456789123456789;
+  root["B"] = 987654321987654321;
+
+  std::string json;
+  serializeJson(doc, json);
+
+  REQUIRE(json == get_expected_json<sizeof(long)>());
+}

test/MixedConfiguration/use_long_long_1.cpp

@@ -0,0 +1,17 @@
+#define ARDUINOJSON_USE_LONG_LONG 1
+#include <ArduinoJson.h>
+
+#include <catch.hpp>
+
+TEST_CASE("ARDUINOJSON_USE_LONG_LONG == 1") {
+  DynamicJsonDocument doc;
+  JsonObject root = doc.to<JsonObject>();
+
+  root["A"] = 123456789123456789;
+  root["B"] = 987654321987654321;
+
+  std::string json;
+  serializeJson(doc, json);
+
+  REQUIRE(json == "{\"A\":123456789123456789,\"B\":987654321987654321}");
+}