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// ArduinoJson - https://arduinojson.org
// Copyright © 2014-2024, Benoit BLANCHON
// MIT License
#include <ArduinoJson/Memory/Alignment.hpp>
#include <ArduinoJson/Memory/ResourceManager.hpp>
#include <ArduinoJson/Memory/VariantPoolImpl.hpp>
#include <catch.hpp>
#include "Allocators.hpp"
using namespace ArduinoJson::detail;
TEST_CASE("ResourceManager::allocSlot()") {
SECTION("Returns different pointer") {
ResourceManager resources;
VariantSlot* s1 = resources.allocSlot();
REQUIRE(s1 != 0);
VariantSlot* s2 = resources.allocSlot();
REQUIRE(s2 != 0);
REQUIRE(s1 != s2);
}
SECTION("Returns the same slot after calling freeSlot()") {
ResourceManager resources;
auto s1 = resources.allocSlot();
auto s2 = resources.allocSlot();
resources.freeSlot(s1);
resources.freeSlot(s2);
auto s3 = resources.allocSlot();
auto s4 = resources.allocSlot();
auto s5 = resources.allocSlot();
REQUIRE(s2.id() != s1.id());
REQUIRE(s3.id() == s2.id());
REQUIRE(s4.id() == s1.id());
REQUIRE(s5.id() != s1.id());
REQUIRE(s5.id() != s2.id());
}
SECTION("Returns aligned pointers") {
ResourceManager resources;
REQUIRE(isAligned(resources.allocSlot().operator VariantSlot*()));
REQUIRE(isAligned(resources.allocSlot().operator VariantSlot*()));
}
SECTION("Returns null if pool list allocation fails") {
ResourceManager resources(FailingAllocator::instance());
auto variant = resources.allocSlot();
REQUIRE(variant.id() == NULL_SLOT);
REQUIRE(static_cast<VariantSlot*>(variant) == nullptr);
}
SECTION("Returns null if pool allocation fails") {
ResourceManager resources(FailingAllocator::instance());
resources.allocSlot();
auto variant = resources.allocSlot();
REQUIRE(variant.id() == NULL_SLOT);
REQUIRE(static_cast<VariantSlot*>(variant) == nullptr);
}
SECTION("Try overflow pool counter") {
ResourceManager resources;
// this test assumes SlotId is 8-bit; otherwise it consumes a lot of memory
// tyhe GitHub Workflow gets killed
REQUIRE(NULL_SLOT == 255);
// fill all the pools
for (SlotId i = 0; i < NULL_SLOT; i++) {
auto slot = resources.allocSlot();
REQUIRE(slot.id() == i); // or != NULL_SLOT
REQUIRE(static_cast<VariantSlot*>(slot) != nullptr);
}
REQUIRE(resources.overflowed() == false);
// now all allocations should fail
for (int i = 0; i < 10; i++) {
auto slot = resources.allocSlot();
REQUIRE(slot.id() == NULL_SLOT);
REQUIRE(static_cast<VariantSlot*>(slot) == nullptr);
}
REQUIRE(resources.overflowed() == true);
}
}