123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
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/*
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* Copyright (c) 2015 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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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
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (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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* Authors: Andreas Sandberg
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*/
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#include "base/circlebuf.hh"
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#include "unittest/unittest.hh"
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const char data[] = {
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0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
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0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
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};
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int
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main(int argc, char *argv[])
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{
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UnitTest::setCase("Basic non-overflow functionality");
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{
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CircleBuf<char> buf(8);
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char foo[16];
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// Write empty buffer, no overflow
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buf.write(data, 8);
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EXPECT_EQ(buf.size(), 8);
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buf.peek(foo, 8);
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EXPECT_EQ(memcmp(foo, data, 8), 0);
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// Read 2
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buf.read(foo, 2);
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EXPECT_EQ(memcmp(foo, data, 2), 0);
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EXPECT_EQ(buf.size(), 6);
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buf.read(foo, 6);
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EXPECT_EQ(memcmp(foo, data + 2, 6), 0);
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EXPECT_EQ(buf.size(), 0);
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}
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UnitTest::setCase("Basic single write overflow functionality");
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{
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CircleBuf<char> buf(8);
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char foo[16];
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buf.write(data, 16);
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EXPECT_EQ(buf.size(), 8);
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buf.peek(foo, 8);
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EXPECT_EQ(memcmp(data + 8, foo, 8), 0);
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}
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UnitTest::setCase("Multi-write overflow functionality");
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{
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CircleBuf<char> buf(8);
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char foo[16];
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// Write, no overflow, write overflow
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buf.write(data, 6);
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buf.write(data + 8, 6);
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EXPECT_EQ(buf.size(), 8);
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buf.peek(foo, 8);
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EXPECT_EQ(memcmp(data + 4, foo, 2), 0);
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EXPECT_EQ(memcmp(data + 8, foo + 2, 6), 0);
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}
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UnitTest::setCase("Pointer wrap around");
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{
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CircleBuf<char> buf(8);
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char foo[16];
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// _start == 0, _stop = 8
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buf.write(data, 8);
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// _start == 4, _stop = 8
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buf.read(foo, 4);
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// _start == 4, _stop = 12
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buf.write(data + 8, 4);
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EXPECT_EQ(buf.size(), 8);
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// _start == 10, _stop = 12
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// Normalized: _start == 2, _stop = 4
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buf.read(foo + 4, 6);
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EXPECT_EQ(buf.size(), 2);
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EXPECT_EQ(memcmp(data, foo, 10), 0);
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// Normalized: _start == 4, _stop = 4
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buf.read(foo + 10, 2);
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EXPECT_EQ(buf.size(), 0);
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EXPECT_EQ(memcmp(data, foo, 12), 0);
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}
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return UnitTest::printResults();
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}
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