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// ArduinoJson - https://arduinojson.org
// Copyright © 2014-2024, Benoit BLANCHON
// MIT License
#include <ArduinoJson.h>
#include <catch.hpp>
#include <stdlib.h> // malloc, free
#include <string>
#include "Allocators.hpp"
TEST_CASE("JsonDocument::clear()") {
SpyingAllocator spy;
JsonDocument doc(&spy);
SECTION("null") {
doc.clear();
REQUIRE(doc.isNull());
REQUIRE(spy.log() == AllocatorLog{});
}
SECTION("releases resources") {
doc[std::string("hello")] = std::string("world");
spy.clearLog();
doc.clear();
REQUIRE(doc.isNull());
REQUIRE(spy.log() == AllocatorLog{
Deallocate(sizeofPool()),
Deallocate(sizeofString("hello")),
Deallocate(sizeofString("world")),
});
}
SECTION("clear free list") { // issue #2034
JsonObject obj = doc.to<JsonObject>();
obj["a"] = 1;
obj.clear(); // puts the slot in the free list
doc.clear();
doc["b"] = 2; // will it pick from the free list?
}
}