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154 lines
3.5 KiB
154 lines
3.5 KiB
// ArduinoJson - https://arduinojson.org
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// Copyright © 2014-2024, Benoit BLANCHON
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// MIT License
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#include <ArduinoJson.h>
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#include <stdint.h>
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#include <catch.hpp>
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namespace {
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struct Date {
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int day;
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int month;
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int year;
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};
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void convertToJson(const Date& src, JsonVariant dst) {
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dst["day"] = src.day;
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dst["month"] = src.month;
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dst["year"] = src.year;
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}
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void convertFromJson(JsonVariantConst src, Date& dst) {
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dst.day = src["day"];
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dst.month = src["month"];
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dst.year = src["year"];
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}
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bool canConvertFromJson(JsonVariantConst src, const Date&) {
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return src["day"].is<int>() && src["month"].is<int>() &&
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src["year"].is<int>();
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}
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} // namespace
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TEST_CASE("Custom converter with overloading") {
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JsonDocument doc;
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SECTION("convert JSON to Date") {
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doc["date"]["day"] = 2;
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doc["date"]["month"] = 3;
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doc["date"]["year"] = 2021;
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Date date = doc["date"];
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REQUIRE(date.day == 2);
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REQUIRE(date.month == 3);
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REQUIRE(date.year == 2021);
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}
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SECTION("is<Date>() returns true") {
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doc["date"]["day"] = 2;
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doc["date"]["month"] = 3;
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doc["date"]["year"] = 2021;
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REQUIRE(doc["date"].is<Date>());
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}
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SECTION("is<Date>() returns false") {
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doc["date"]["day"] = 2;
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doc["date"]["month"] = 3;
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doc["date"]["year"] = "2021";
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REQUIRE(doc["date"].is<Date>() == false);
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}
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SECTION("convert Date to JSON") {
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Date date = {19, 3, 2021};
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doc["date"] = date;
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REQUIRE(doc["date"]["day"] == 19);
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REQUIRE(doc["date"]["month"] == 3);
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REQUIRE(doc["date"]["year"] == 2021);
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}
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}
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class Complex {
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public:
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explicit Complex(double r, double i) : real_(r), imag_(i) {}
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double real() const {
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return real_;
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}
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double imag() const {
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return imag_;
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}
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private:
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double real_, imag_;
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};
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namespace ArduinoJson {
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template <>
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struct Converter<Complex> {
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static void toJson(const Complex& src, JsonVariant dst) {
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dst["real"] = src.real();
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dst["imag"] = src.imag();
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}
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static Complex fromJson(JsonVariantConst src) {
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return Complex(src["real"], src["imag"]);
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}
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static bool checkJson(JsonVariantConst src) {
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return src["real"].is<double>() && src["imag"].is<double>();
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}
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};
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} // namespace ArduinoJson
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TEST_CASE("Custom converter with specialization") {
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JsonDocument doc;
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SECTION("convert JSON to Complex") {
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doc["value"]["real"] = 2;
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doc["value"]["imag"] = 3;
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Complex value = doc["value"];
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REQUIRE(value.real() == 2);
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REQUIRE(value.imag() == 3);
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}
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SECTION("is<Complex>() returns true") {
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doc["value"]["real"] = 2;
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doc["value"]["imag"] = 3;
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REQUIRE(doc["value"].is<Complex>());
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}
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SECTION("is<Complex>() returns false") {
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doc["value"]["real"] = 2;
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doc["value"]["imag"] = "3";
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REQUIRE(doc["value"].is<Complex>() == false);
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}
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SECTION("convert value to JSON") {
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doc["value"] = Complex(19, 3);
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REQUIRE(doc["value"]["real"] == 19);
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REQUIRE(doc["value"]["imag"] == 3);
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}
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}
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TEST_CASE("ConverterNeedsWriteableRef") {
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using namespace ArduinoJson::detail;
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CHECK(ConverterNeedsWriteableRef<int>::value == false);
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CHECK(ConverterNeedsWriteableRef<float>::value == false);
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CHECK(ConverterNeedsWriteableRef<JsonVariant>::value == true);
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CHECK(ConverterNeedsWriteableRef<JsonVariantConst>::value == false);
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CHECK(ConverterNeedsWriteableRef<JsonObject>::value == true);
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CHECK(ConverterNeedsWriteableRef<JsonObjectConst>::value == false);
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CHECK(ConverterNeedsWriteableRef<JsonArray>::value == true);
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CHECK(ConverterNeedsWriteableRef<JsonArrayConst>::value == false);
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}
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