thin-provisioning-tools/unit-tests/endian_t.cc

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// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
//
// thin-provisioning-tools is free software: you can redistribute it
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// thin-provisioning-tools is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with thin-provisioning-tools. If not, see
// <http://www.gnu.org/licenses/>.
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#include "gmock/gmock.h"
#include "base/endian_utils.h"
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using namespace base;
using namespace std;
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using namespace testing;
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//----------------------------------------------------------------
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TEST(EndianTests, bitmaps)
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{
unsigned NR_BITS = 10247;
vector<uint64_t> data((NR_BITS + 63) / 64, 0);
// check all bits are zero
void *bits = &data[0];
for (unsigned i = 0; i < NR_BITS; i++)
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ASSERT_FALSE(test_bit_le(bits, i));
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// set all bits to one
for (unsigned i = 0; i < NR_BITS; i++)
set_bit_le(bits, i);
// check they're all 1 now
for (unsigned i = 0; i < NR_BITS; i++)
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ASSERT_TRUE(test_bit_le(bits, i));
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// clear every third bit
for (unsigned i = 0; i < NR_BITS; i += 3)
clear_bit_le(bits, i);
// check everything is as we expect
for (unsigned i = 0; i < NR_BITS; i++) {
if ((i % 3) == 0)
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ASSERT_FALSE(test_bit_le(bits, i));
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else
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ASSERT_TRUE(test_bit_le(bits, i));
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}
}
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TEST(EndianTests, bitmaps_alternate_words)
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{
unsigned NR_BITS = 10247;
vector<uint64_t> data((NR_BITS + 63) / 64, 0);
// check all bits are zero
void *bits = &data[0];
for (unsigned i = 0; i < 128; i++)
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ASSERT_FALSE(test_bit_le(bits, i));
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for (unsigned i = 0; i < 64; i++)
set_bit_le(bits, i);
for (unsigned i = 64; i < 128; i++)
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ASSERT_FALSE(test_bit_le(bits, i));
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}
//----------------------------------------------------------------