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/*
* Copyright (C) 2018, 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 <gmock/gmock.h>
#include "ringbuffer.h"
using testing::Return;
using testing::Test;
namespace android {
namespace hardware {
namespace wifi {
namespace V1_5 {
namespace implementation {
class RingbufferTest : public Test {
public:
const uint32_t maxBufferSize_ = 10;
Ringbuffer buffer_{maxBufferSize_};
};
TEST_F(RingbufferTest, CreateEmptyBuffer) {
ASSERT_TRUE(buffer_.getData().empty());
}
TEST_F(RingbufferTest, CanUseFullBufferCapacity) {
const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
buffer_.append(input);
buffer_.append(input2);
ASSERT_EQ(2u, buffer_.getData().size());
EXPECT_EQ(input, buffer_.getData().front());
EXPECT_EQ(input2, buffer_.getData().back());
}
TEST_F(RingbufferTest, OldDataIsRemovedOnOverflow) {
const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
const std::vector<uint8_t> input3 = {'G'};
buffer_.append(input);
buffer_.append(input2);
buffer_.append(input3);
ASSERT_EQ(2u, buffer_.getData().size());
EXPECT_EQ(input2, buffer_.getData().front());
EXPECT_EQ(input3, buffer_.getData().back());
}
TEST_F(RingbufferTest, MultipleOldDataIsRemovedOnOverflow) {
const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
const std::vector<uint8_t> input3(maxBufferSize_, '2');
buffer_.append(input);
buffer_.append(input2);
buffer_.append(input3);
ASSERT_EQ(1u, buffer_.getData().size());
EXPECT_EQ(input3, buffer_.getData().front());
}
TEST_F(RingbufferTest, AppendingEmptyBufferDoesNotAddGarbage) {
const std::vector<uint8_t> input = {};
buffer_.append(input);
ASSERT_TRUE(buffer_.getData().empty());
}
TEST_F(RingbufferTest, OversizedAppendIsDropped) {
const std::vector<uint8_t> input(maxBufferSize_ + 1, '0');
buffer_.append(input);
ASSERT_TRUE(buffer_.getData().empty());
}
TEST_F(RingbufferTest, OversizedAppendDoesNotDropExistingData) {
const std::vector<uint8_t> input(maxBufferSize_, '0');
const std::vector<uint8_t> input2(maxBufferSize_ + 1, '1');
buffer_.append(input);
buffer_.append(input2);
ASSERT_EQ(1u, buffer_.getData().size());
EXPECT_EQ(input, buffer_.getData().front());
}
} // namespace implementation
} // namespace V1_5
} // namespace wifi
} // namespace hardware
} // namespace android
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