Files
ArduinoJson/extras/tests/ResourceManager/saveStaticString.cpp
Benoit Blanchon 8e3286aac8 Store static strings in a dedicated pool
Because a slot id is smaller than a pointer, this change will ultimately allow reducing the slot size.
2025-06-26 20:48:13 +02:00

48 lines
1.3 KiB
C++

// ArduinoJson - https://arduinojson.org
// Copyright © 2014-2025, Benoit BLANCHON
// MIT License
#include <ArduinoJson/Memory/ResourceManager.hpp>
#include <ArduinoJson/Strings/StringAdapters.hpp>
#include <catch.hpp>
#include "Allocators.hpp"
using namespace ArduinoJson::detail;
TEST_CASE("ResourceManager::saveStaticString() deduplicates strings") {
SpyingAllocator spy;
ResourceManager resources(&spy);
auto str1 = "hello";
auto str2 = "world";
auto id1 = resources.saveStaticString(str1);
auto id2 = resources.saveStaticString(str2);
REQUIRE(id1 != id2);
auto id3 = resources.saveStaticString(str1);
REQUIRE(id1 == id3);
resources.shrinkToFit();
REQUIRE(spy.log() ==
AllocatorLog{
Allocate(sizeofStaticStringPool()),
Reallocate(sizeofStaticStringPool(), sizeofStaticStringPool(2)),
});
REQUIRE(resources.overflowed() == false);
}
TEST_CASE("ResourceManager::saveStaticString() when allocation fails") {
SpyingAllocator spy(FailingAllocator::instance());
ResourceManager resources(&spy);
auto slotId = resources.saveStaticString("hello");
REQUIRE(slotId == NULL_SLOT);
REQUIRE(resources.overflowed() == true);
REQUIRE(spy.log() == AllocatorLog{
AllocateFail(sizeofStaticStringPool()),
});
}