ArduinoJson/test/JsonObject/prettyPrintTo.cpp

// ArduinoJson - arduinojson.org
// Copyright Benoit Blanchon 2014-2018
// MIT License

#include <ArduinoJson.h>
#include <catch.hpp>
#include <string>

void check(const JsonObject &obj, const std::string expected) {
  char json[256];

  size_t actualLen = obj.prettyPrintTo(json);
  size_t measuredLen = obj.measurePrettyLength();

  REQUIRE(json == expected);
  REQUIRE(expected.size() == actualLen);
  REQUIRE(expected.size() == measuredLen);
}

TEST_CASE("JsonObject::prettyPrintTo()") {
  DynamicJsonBuffer jb;
  JsonObject &obj = jb.createObject();

  SECTION("EmptyObject") {
    check(obj, "{}");
  }

  SECTION("OneMember") {
    obj["key"] = "value";

    check(obj,
          "{\r\n"
          "  \"key\": \"value\"\r\n"
          "}");
  }

  SECTION("TwoMembers") {
    obj["key1"] = "value1";
    obj["key2"] = "value2";

    check(obj,
          "{\r\n"
          "  \"key1\": \"value1\",\r\n"
          "  \"key2\": \"value2\"\r\n"
          "}");
  }

  SECTION("EmptyNestedContainers") {
    obj.createNestedObject("key1");
    obj.createNestedArray("key2");

    check(obj,
          "{\r\n"
          "  \"key1\": {},\r\n"
          "  \"key2\": []\r\n"
          "}");
  }

  SECTION("NestedContainers") {
    JsonObject &nested1 = obj.createNestedObject("key1");
    nested1["a"] = 1;

    JsonArray &nested2 = obj.createNestedArray("key2");
    nested2.add(2);

    check(obj,
          "{\r\n"
          "  \"key1\": {\r\n"
          "    \"a\": 1\r\n"
          "  },\r\n"
          "  \"key2\": [\r\n"
          "    2\r\n"
          "  ]\r\n"
          "}");
  }
}