c4327b26f4
Summary: No logic changes, just split `tx::MasterEngine` into `tx::SingleNodeEngine` and `tx::MasterEngine`. This gives better responsibility separation and is more appropriate now there is no Start/Shutdown. Reviewers: dgleich, teon.banek, buda Reviewed By: dgleich, teon.banek Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D1099
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
#include <vector>
|
|
#include "gtest/gtest.h"
|
|
|
|
#include "mvcc/record.hpp"
|
|
#include "mvcc/version.hpp"
|
|
#include "mvcc/version_list.hpp"
|
|
#include "threading/sync/lock_timeout_exception.hpp"
|
|
#include "transactions/engine_single_node.hpp"
|
|
#include "transactions/transaction.hpp"
|
|
|
|
#include "mvcc_gc_common.hpp"
|
|
|
|
TEST(MVCC, Deadlock) {
|
|
tx::SingleNodeEngine engine;
|
|
|
|
auto t0 = engine.Begin();
|
|
mvcc::VersionList<Prop> version_list1(*t0, 0);
|
|
mvcc::VersionList<Prop> version_list2(*t0, 1);
|
|
engine.Commit(*t0);
|
|
|
|
auto t1 = engine.Begin();
|
|
auto t2 = engine.Begin();
|
|
|
|
version_list1.update(*t1);
|
|
version_list2.update(*t2);
|
|
EXPECT_THROW(version_list1.update(*t2), LockTimeoutException);
|
|
}
|
|
|
|
// TODO Gleich: move this test to mvcc_gc???
|
|
// check that we don't delete records when we re-link
|
|
TEST(MVCC, UpdateDontDelete) {
|
|
std::atomic<int> count{0};
|
|
{
|
|
tx::SingleNodeEngine engine;
|
|
auto t1 = engine.Begin();
|
|
mvcc::VersionList<DestrCountRec> version_list(*t1, 0, count);
|
|
engine.Commit(*t1);
|
|
|
|
auto t2 = engine.Begin();
|
|
version_list.update(*t2);
|
|
engine.Abort(*t2);
|
|
EXPECT_EQ(count, 0);
|
|
|
|
auto t3 = engine.Begin();
|
|
|
|
// Update re-links the node and shouldn't clear it yet.
|
|
version_list.update(*t3);
|
|
EXPECT_EQ(count, 0);
|
|
|
|
// TODO Gleich: why don't we also test that remove doesn't delete?
|
|
engine.Commit(*t3);
|
|
}
|
|
EXPECT_EQ(count, 3);
|
|
}
|
|
|
|
// Check that we get the oldest record.
|
|
TEST(MVCC, Oldest) {
|
|
tx::SingleNodeEngine engine;
|
|
auto t1 = engine.Begin();
|
|
mvcc::VersionList<Prop> version_list(*t1, 0);
|
|
auto first = version_list.Oldest();
|
|
EXPECT_NE(first, nullptr);
|
|
// TODO Gleich: no need to do 10 checks of the same thing
|
|
for (int i = 0; i < 10; ++i) {
|
|
engine.Advance(t1->id_);
|
|
version_list.update(*t1);
|
|
EXPECT_EQ(version_list.Oldest(), first);
|
|
}
|
|
// TODO Gleich: what about remove?
|
|
// TODO Gleich: here it might make sense to write a concurrent test
|
|
// since these ops rely heavily on linkage atomicity?
|
|
}
|
|
|
|
// TODO Gleich: perhaps some concurrent VersionList::find tests?
|