forked from bblanchon/ArduinoJson
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
// ArduinoJson - arduinojson.org
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// Copyright Benoit Blanchon 2014-2018
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// MIT License
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#include <ArduinoJson/Memory/MemoryPool.hpp>
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#include <catch.hpp>
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using namespace ARDUINOJSON_NAMESPACE;
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char buffer[4096];
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TEST_CASE("MemoryPool::capacity()") {
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const size_t capacity = 64;
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MemoryPool memoryPool(buffer, capacity);
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REQUIRE(capacity == memoryPool.capacity());
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}
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TEST_CASE("MemoryPool::size()") {
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MemoryPool memoryPool(buffer, sizeof(buffer));
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SECTION("Initial size is 0") {
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REQUIRE(0 == memoryPool.size());
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}
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SECTION("size() == capacity() after allocExpandableString()") {
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memoryPool.allocExpandableString();
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REQUIRE(memoryPool.size() == memoryPool.capacity());
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}
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SECTION("Decreases after freezeString()") {
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StringSlot* a = memoryPool.allocExpandableString();
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memoryPool.freezeString(a, 1);
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REQUIRE(memoryPool.size() == JSON_STRING_SIZE(1));
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StringSlot* b = memoryPool.allocExpandableString();
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memoryPool.freezeString(b, 1);
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REQUIRE(memoryPool.size() == 2 * JSON_STRING_SIZE(1));
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}
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SECTION("Increases after allocFrozenString()") {
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memoryPool.allocFrozenString(0);
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REQUIRE(memoryPool.size() == JSON_STRING_SIZE(0));
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memoryPool.allocFrozenString(0);
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REQUIRE(memoryPool.size() == 2 * JSON_STRING_SIZE(0));
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}
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SECTION("Decreases after freeVariant()") {
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VariantSlot* a = memoryPool.allocVariant();
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VariantSlot* b = memoryPool.allocVariant();
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memoryPool.freeVariant(b);
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REQUIRE(memoryPool.size() == sizeof(VariantSlot));
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memoryPool.freeVariant(a);
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REQUIRE(memoryPool.size() == 0);
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}
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SECTION("Decreases after calling freeString() in order") {
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StringSlot* a = memoryPool.allocFrozenString(5);
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REQUIRE(a != 0);
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StringSlot* b = memoryPool.allocFrozenString(6);
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REQUIRE(b != 0);
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memoryPool.freeString(b);
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REQUIRE(memoryPool.size() == JSON_STRING_SIZE(5));
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memoryPool.freeString(a);
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REQUIRE(memoryPool.size() == 0);
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}
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SECTION("Decreases after calling freeString() in reverse order") {
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StringSlot* a = memoryPool.allocFrozenString(5);
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REQUIRE(a != 0);
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StringSlot* b = memoryPool.allocFrozenString(6);
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REQUIRE(b != 0);
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memoryPool.freeString(a);
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REQUIRE(memoryPool.size() == JSON_STRING_SIZE(6));
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memoryPool.freeString(b);
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REQUIRE(memoryPool.size() == 0);
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}
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SECTION("Doesn't grow when memory pool is full") {
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const size_t variantCount = sizeof(buffer) / sizeof(VariantSlot);
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for (size_t i = 0; i < variantCount; i++) memoryPool.allocVariant();
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size_t size = memoryPool.size();
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memoryPool.allocVariant();
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REQUIRE(size == memoryPool.size());
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}
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}
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