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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "BigBuffer.h"
#include <gtest/gtest.h>
namespace aapt {
TEST(BigBufferTest, AllocateSingleBlock) {
BigBuffer buffer(4);
EXPECT_NE(nullptr, buffer.nextBlock<char>(2));
EXPECT_EQ(2u, buffer.size());
}
TEST(BigBufferTest, ReturnSameBlockIfNextAllocationFits) {
BigBuffer buffer(16);
char* b1 = buffer.nextBlock<char>(8);
EXPECT_NE(nullptr, b1);
char* b2 = buffer.nextBlock<char>(4);
EXPECT_NE(nullptr, b2);
EXPECT_EQ(b1 + 8, b2);
}
TEST(BigBufferTest, AllocateExactSizeBlockIfLargerThanBlockSize) {
BigBuffer buffer(16);
EXPECT_NE(nullptr, buffer.nextBlock<char>(32));
EXPECT_EQ(32u, buffer.size());
}
TEST(BigBufferTest, AppendAndMoveBlock) {
BigBuffer buffer(16);
uint32_t* b1 = buffer.nextBlock<uint32_t>();
ASSERT_NE(nullptr, b1);
*b1 = 33;
{
BigBuffer buffer2(16);
b1 = buffer2.nextBlock<uint32_t>();
ASSERT_NE(nullptr, b1);
*b1 = 44;
buffer.appendBuffer(std::move(buffer2));
EXPECT_EQ(0u, buffer2.size());
EXPECT_EQ(buffer2.begin(), buffer2.end());
}
EXPECT_EQ(2 * sizeof(uint32_t), buffer.size());
auto b = buffer.begin();
ASSERT_NE(b, buffer.end());
ASSERT_EQ(sizeof(uint32_t), b->size);
ASSERT_EQ(33u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
++b;
ASSERT_NE(b, buffer.end());
ASSERT_EQ(sizeof(uint32_t), b->size);
ASSERT_EQ(44u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
++b;
ASSERT_EQ(b, buffer.end());
}
TEST(BigBufferTest, PadAndAlignProperly) {
BigBuffer buffer(16);
ASSERT_NE(buffer.nextBlock<char>(2), nullptr);
ASSERT_EQ(2u, buffer.size());
buffer.pad(2);
ASSERT_EQ(4u, buffer.size());
buffer.align4();
ASSERT_EQ(4u, buffer.size());
buffer.pad(2);
ASSERT_EQ(6u, buffer.size());
buffer.align4();
ASSERT_EQ(8u, buffer.size());
}
} // namespace aapt
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