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86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/TestSuite.h>
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#include <AK/CircularDuplexStream.h>
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TEST_CASE(works_like_a_queue)
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{
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constexpr size_t capacity = 32;
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CircularQueue<u8, capacity> queue;
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CircularDuplexStream<capacity> stream;
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for (size_t idx = 0; idx < capacity; ++idx) {
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queue.enqueue(static_cast<u8>(idx % 256));
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stream << static_cast<u8>(idx % 256);
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}
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for (size_t idx = 0; idx < capacity; ++idx) {
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u8 byte;
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stream >> byte;
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EXPECT_EQ(queue.dequeue(), byte);
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}
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EXPECT(stream.eof());
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}
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TEST_CASE(overwritting_is_well_defined)
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{
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constexpr size_t half_capacity = 16;
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constexpr size_t capacity = 2 * half_capacity;
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CircularDuplexStream<capacity> stream;
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for (size_t idx = 0; idx < capacity; ++idx)
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stream << static_cast<u8>(idx % 256);
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Array<u8, half_capacity> buffer;
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stream >> buffer;
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for (size_t idx = 0; idx < half_capacity; ++idx)
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EXPECT_EQ(buffer[idx], idx % 256);
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for (size_t idx = 0; idx < half_capacity; ++idx)
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stream << static_cast<u8>(idx % 256);
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for (size_t idx = 0; idx < capacity; ++idx) {
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u8 byte;
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stream >> byte;
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if (idx < half_capacity)
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EXPECT_EQ(byte, half_capacity + idx % 256);
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else
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EXPECT_EQ(byte, idx % 256 - half_capacity);
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}
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EXPECT(stream.eof());
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}
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TEST_MAIN(CircularDuplexStream)
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