kbf/test/test_json.cpp

#include <string>

#include <nlohmann_json/json.hpp>

#include <unity.h>

using std::string;

TEST_CASE("nlohmann JSON", "[lib][json]") {
    nlohmann::json json;
    json["foo"]               = 123;
    json["nested"]["magic"]   = 1337;
    json["nested"]["amazing"] = true;
    TEST_ASSERT_EQUAL_STRING("{\"foo\":123,\"nested\":{\"amazing\":true,\"magic\":1337}}",
                             json.dump().c_str());

    nlohmann::json noway = {
            {"pi",      3.141},
            {"happy",   true},
            {"name",    "Niels"},
            {"nothing", nullptr},
            {"answer",  {
                {"everything", 42}
             }},
            {"list",    {1, 0, 2}},
            {"object",  {
                {"currency", "USD"},
                {"value", 42.99}
            }}
    };
    TEST_ASSERT_EQUAL_STRING(
            "{\"answer\":{\"everything\":42},\"happy\":true,\"list\":[1,0,2],\"name\":\"Niels\",\"nothing\":null,\"object\":{\"currency\":\"USD\",\"value\":42.99},\"pi\":3.141}",
            noway.dump().c_str()
    );

    string str = R"({"key":"value"})";
    auto parsed = nlohmann::json::parse(str);
    TEST_ASSERT_EQUAL_STRING("value", parsed.find("key")->get<string>().c_str());
}