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/*
* Copyright 2019 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 "packet/bit_inserter.h"
#include <gtest/gtest.h>
#include <memory>
#include "os/log.h"
using bluetooth::packet::BitInserter;
using std::vector;
namespace bluetooth {
namespace packet {
TEST(BitInserterTest, addMoreBits) {
std::vector<uint8_t> bytes;
BitInserter it(bytes);
for (size_t i = 0; i < 9; i++) {
it.insert_bits(static_cast<uint8_t>(i), i);
}
it.insert_bits(static_cast<uint8_t>(0b1010), 4);
std::vector<uint8_t> result = {0b00011101 /* 3 2 1 */, 0b00010101 /* 5 4 */, 0b11100011 /* 7 6 */, 0b10000000 /* 8 */,
0b10100000 /* filled with 1010 */};
ASSERT_EQ(result.size(), bytes.size());
for (size_t i = 0; i < bytes.size(); i++) {
ASSERT_EQ(result[i], bytes[i]);
}
}
TEST(BitInserterTest, observerTest) {
std::vector<uint8_t> bytes;
BitInserter it(bytes);
std::vector<uint8_t> copy;
uint64_t checksum = 0x0123456789abcdef;
it.RegisterObserver(ByteObserver([©](uint8_t byte) { copy.push_back(byte); }, [checksum]() { return checksum; }));
for (size_t i = 0; i < 9; i++) {
it.insert_bits(static_cast<uint8_t>(i), i);
}
it.insert_bits(static_cast<uint8_t>(0b1010), 4);
std::vector<uint8_t> result = {0b00011101 /* 3 2 1 */, 0b00010101 /* 5 4 */, 0b11100011 /* 7 6 */, 0b10000000 /* 8 */,
0b10100000 /* filled with 1010 */};
ASSERT_EQ(result.size(), bytes.size());
for (size_t i = 0; i < bytes.size(); i++) {
ASSERT_EQ(result[i], bytes[i]);
}
ASSERT_EQ(result.size(), copy.size());
for (size_t i = 0; i < copy.size(); i++) {
ASSERT_EQ(result[i], copy[i]);
}
ByteObserver observer = it.UnregisterObserver();
ASSERT_EQ(checksum, observer.GetValue());
uint8_t another_byte = 0xef;
it.insert_bits(another_byte, 8);
ASSERT_EQ(bytes.back(), another_byte);
ASSERT_EQ(result.size() + 1, bytes.size());
ASSERT_EQ(result.size(), copy.size());
}
} // namespace packet
} // namespace bluetooth
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