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111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
//-----------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2015 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <ripple/app/ledger/Ledger.h>
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#include <ripple/basics/Log.h>
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#include <ripple/beast/unit_test.h>
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#include <ripple/ledger/View.h>
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#include <test/jtx.h>
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namespace ripple {
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namespace test {
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class SkipList_test : public beast::unit_test::suite
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{
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void
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testSkipList()
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{
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jtx::Env env(*this);
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std::vector<std::shared_ptr<Ledger>> history;
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{
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Config config;
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auto prev = std::make_shared<Ledger>(
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create_genesis,
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config,
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std::vector<uint256>{},
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env.app().getNodeFamily());
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history.push_back(prev);
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for (auto i = 0; i < 1023; ++i)
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{
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auto next = std::make_shared<Ledger>(
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*prev, env.app().timeKeeper().closeTime());
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next->updateSkipList();
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history.push_back(next);
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prev = next;
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}
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}
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{
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auto l = *(std::next(std::begin(history)));
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BEAST_EXPECT((*std::begin(history))->info().seq < l->info().seq);
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BEAST_EXPECT(
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hashOfSeq(*l, l->info().seq + 1, env.journal) == boost::none);
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BEAST_EXPECT(
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hashOfSeq(*l, l->info().seq, env.journal) == l->info().hash);
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BEAST_EXPECT(
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hashOfSeq(*l, l->info().seq - 1, env.journal) ==
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l->info().parentHash);
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BEAST_EXPECT(
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hashOfSeq(*history.back(), l->info().seq, env.journal) ==
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boost::none);
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}
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// ledger skip lists store up to the previous 256 hashes
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for (auto i = history.crbegin(); i != history.crend(); i += 256)
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{
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for (auto n = i;
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n != std::next(i, (*i)->info().seq - 256 > 1 ? 257 : 256);
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++n)
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{
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BEAST_EXPECT(
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hashOfSeq(**i, (*n)->info().seq, env.journal) ==
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(*n)->info().hash);
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}
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// edge case accessing beyond 256
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BEAST_EXPECT(
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hashOfSeq(**i, (*i)->info().seq - 258, env.journal) ==
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boost::none);
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}
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// every 256th hash beyond the first 256 is stored
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for (auto i = history.crbegin(); i != std::next(history.crend(), -512);
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i += 256)
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{
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for (auto n = std::next(i, 512); n != history.crend(); n += 256)
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{
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BEAST_EXPECT(
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hashOfSeq(**i, (*n)->info().seq, env.journal) ==
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(*n)->info().hash);
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}
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}
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}
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void
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run() override
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{
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testSkipList();
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}
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};
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BEAST_DEFINE_TESTSUITE(SkipList, ledger, ripple);
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} // namespace test
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} // namespace ripple
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