forked from bblanchon/ArduinoJson
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
// Copyright Benoit Blanchon 2014-2017
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// MIT License
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//
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// Arduino JSON library
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// https://bblanchon.github.io/ArduinoJson/
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// If you like this project, please add a star!
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#include <ArduinoJson.h>
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#include <catch.hpp>
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static bool isAligned(void* ptr) {
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const size_t mask = sizeof(void*) - 1;
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size_t addr = reinterpret_cast<size_t>(ptr);
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return (addr & mask) == 0;
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}
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TEST_CASE("DynamicJsonBuffer::alloc()") {
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DynamicJsonBuffer buffer;
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SECTION("InitialSizeIsZero") {
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REQUIRE(0 == buffer.size());
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}
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SECTION("SizeIncreasesAfterAlloc") {
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buffer.alloc(1);
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REQUIRE(1U <= buffer.size());
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buffer.alloc(1);
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REQUIRE(2U <= buffer.size());
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}
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SECTION("ReturnDifferentPointer") {
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void* p1 = buffer.alloc(1);
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void* p2 = buffer.alloc(2);
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REQUIRE(p1 != p2);
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}
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SECTION("Alignment") {
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// make room for two but not three
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buffer = DynamicJsonBuffer(2 * sizeof(void*) + 1);
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REQUIRE(isAligned(buffer.alloc(1))); // this on is aligned by design
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REQUIRE(isAligned(buffer.alloc(1))); // this one fits in the first block
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REQUIRE(isAligned(buffer.alloc(1))); // this one requires a new block
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}
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}
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