108 lines
3.8 KiB
C++
108 lines
3.8 KiB
C++
/*
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Copyright (c) 2012, Arvid Norberg
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All rights reserved.
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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
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are met:
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* 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
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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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
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "test.hpp"
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#include "libtorrent/aux_/merkle.hpp"
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TORRENT_TEST(merkle)
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{
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using namespace lt;
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// test merkle_*() functions
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// this is the structure:
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// 0
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// 1 2
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// 3 4 5 6
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// 7 8 9 10 11 12 13 14
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// num_leafs = 8
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TEST_EQUAL(merkle_num_leafs(1), 1);
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TEST_EQUAL(merkle_num_leafs(2), 2);
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TEST_EQUAL(merkle_num_leafs(3), 4);
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TEST_EQUAL(merkle_num_leafs(4), 4);
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TEST_EQUAL(merkle_num_leafs(5), 8);
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TEST_EQUAL(merkle_num_leafs(6), 8);
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TEST_EQUAL(merkle_num_leafs(7), 8);
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TEST_EQUAL(merkle_num_leafs(8), 8);
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TEST_EQUAL(merkle_num_leafs(9), 16);
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TEST_EQUAL(merkle_num_leafs(10), 16);
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TEST_EQUAL(merkle_num_leafs(11), 16);
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TEST_EQUAL(merkle_num_leafs(12), 16);
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TEST_EQUAL(merkle_num_leafs(13), 16);
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TEST_EQUAL(merkle_num_leafs(14), 16);
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TEST_EQUAL(merkle_num_leafs(15), 16);
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TEST_EQUAL(merkle_num_leafs(16), 16);
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TEST_EQUAL(merkle_num_leafs(17), 32);
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TEST_EQUAL(merkle_num_leafs(18), 32);
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// parents
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TEST_EQUAL(merkle_get_parent(1), 0);
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TEST_EQUAL(merkle_get_parent(2), 0);
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TEST_EQUAL(merkle_get_parent(3), 1);
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TEST_EQUAL(merkle_get_parent(4), 1);
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TEST_EQUAL(merkle_get_parent(5), 2);
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TEST_EQUAL(merkle_get_parent(6), 2);
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TEST_EQUAL(merkle_get_parent(7), 3);
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TEST_EQUAL(merkle_get_parent(8), 3);
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TEST_EQUAL(merkle_get_parent(9), 4);
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TEST_EQUAL(merkle_get_parent(10), 4);
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TEST_EQUAL(merkle_get_parent(11), 5);
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TEST_EQUAL(merkle_get_parent(12), 5);
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TEST_EQUAL(merkle_get_parent(13), 6);
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TEST_EQUAL(merkle_get_parent(14), 6);
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// siblings
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TEST_EQUAL(merkle_get_sibling(1), 2);
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TEST_EQUAL(merkle_get_sibling(2), 1);
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TEST_EQUAL(merkle_get_sibling(3), 4);
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TEST_EQUAL(merkle_get_sibling(4), 3);
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TEST_EQUAL(merkle_get_sibling(5), 6);
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TEST_EQUAL(merkle_get_sibling(6), 5);
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TEST_EQUAL(merkle_get_sibling(7), 8);
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TEST_EQUAL(merkle_get_sibling(8), 7);
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TEST_EQUAL(merkle_get_sibling(9), 10);
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TEST_EQUAL(merkle_get_sibling(10), 9);
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TEST_EQUAL(merkle_get_sibling(11), 12);
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TEST_EQUAL(merkle_get_sibling(12), 11);
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TEST_EQUAL(merkle_get_sibling(13), 14);
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TEST_EQUAL(merkle_get_sibling(14), 13);
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// total number of nodes given the number of leafs
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TEST_EQUAL(merkle_num_nodes(1), 1);
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TEST_EQUAL(merkle_num_nodes(2), 3);
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TEST_EQUAL(merkle_num_nodes(4), 7);
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TEST_EQUAL(merkle_num_nodes(8), 15);
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TEST_EQUAL(merkle_num_nodes(16), 31);
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}
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