memgraph/tests/unit/edges_single_node.cpp
Marin Tomic 3421eb6ae7 Fix filtering of edges by edge type and destination
Summary:
`Edges` class didn't properly filter edges when given both edge type
and destination arguments, which causes weird bugs in query execution (wrong
edge getting matched in `Expand` with existing node flag set). This is probably
because we didn't support using both filters at the same time, but the API and
documentation for `VertexAccessor::in` and `VertexAccessor::out` functions
didn't reflect that.

Reviewers: teon.banek, msantl

Reviewed By: msantl

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1796
2019-01-14 17:31:40 +01:00

97 lines
3.1 KiB
C++

#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "storage/single_node/edge.hpp"
#include "storage/single_node/vertex.hpp"
#include "transactions/single_node/engine.hpp"
#include "utils/algorithm.hpp"
#include "storage/single_node/edges.hpp"
TEST(Edges, Filtering) {
Edges edges;
tx::Engine tx_engine;
auto tx = tx_engine.Begin();
int64_t vertex_gid = 0;
mvcc::VersionList<Vertex> v0(*tx, vertex_gid++);
mvcc::VersionList<Vertex> v1(*tx, vertex_gid++);
mvcc::VersionList<Vertex> v2(*tx, vertex_gid++);
mvcc::VersionList<Vertex> v3(*tx, vertex_gid++);
storage::EdgeType t1{1};
storage::EdgeType t2{2};
int64_t edge_gid = 0;
mvcc::VersionList<Edge> e1(*tx, edge_gid++, &v0, &v1, t1);
edges.emplace(&v1, &e1, t1);
mvcc::VersionList<Edge> e2(*tx, edge_gid++, &v0, &v2, t2);
edges.emplace(&v2, &e2, t2);
mvcc::VersionList<Edge> e3(*tx, edge_gid++, &v0, &v3, t1);
edges.emplace(&v3, &e3, t1);
mvcc::VersionList<Edge> e4(*tx, edge_gid++, &v0, &v1, t2);
edges.emplace(&v1, &e4, t2);
mvcc::VersionList<Edge> e5(*tx, edge_gid++, &v0, &v2, t1);
edges.emplace(&v2, &e5, t1);
mvcc::VersionList<Edge> e6(*tx, edge_gid++, &v0, &v3, t2);
edges.emplace(&v3, &e6, t2);
auto edge_addresses = [edges](mvcc::VersionList<Vertex> *dest,
std::vector<storage::EdgeType> *edge_types) {
std::vector<mvcc::VersionList<Edge> *> ret;
for (auto it = edges.begin(dest, edge_types); it != edges.end(); ++it)
ret.push_back(it->edge);
return ret;
};
{ // no filtering
EXPECT_THAT(edge_addresses(nullptr, nullptr),
::testing::UnorderedElementsAre(&e1, &e2, &e3, &e4, &e5, &e6));
}
{
// filter by node
EXPECT_THAT(edge_addresses(&v1, nullptr),
::testing::UnorderedElementsAre(&e1, &e4));
EXPECT_THAT(edge_addresses(&v2, nullptr),
::testing::UnorderedElementsAre(&e2, &e5));
EXPECT_THAT(edge_addresses(&v3, nullptr),
::testing::UnorderedElementsAre(&e3, &e6));
}
{
// filter by edge type
std::vector<storage::EdgeType> f1{t1};
std::vector<storage::EdgeType> f2{t2};
std::vector<storage::EdgeType> f3{t1, t2};
EXPECT_THAT(edge_addresses(nullptr, &f1),
::testing::UnorderedElementsAre(&e1, &e3, &e5));
EXPECT_THAT(edge_addresses(nullptr, &f2),
::testing::UnorderedElementsAre(&e2, &e4, &e6));
EXPECT_THAT(edge_addresses(nullptr, &f3),
::testing::UnorderedElementsAre(&e1, &e2, &e3, &e4, &e5, &e6));
}
{
// filter by both node and edge type
std::vector<storage::EdgeType> f1{t1};
std::vector<storage::EdgeType> f2{t2};
EXPECT_THAT(edge_addresses(&v1, &f1), ::testing::UnorderedElementsAre(&e1));
EXPECT_THAT(edge_addresses(&v1, &f2), ::testing::UnorderedElementsAre(&e4));
EXPECT_THAT(edge_addresses(&v2, &f1), ::testing::UnorderedElementsAre(&e5));
EXPECT_THAT(edge_addresses(&v2, &f2), ::testing::UnorderedElementsAre(&e2));
EXPECT_THAT(edge_addresses(&v3, &f1), ::testing::UnorderedElementsAre(&e3));
EXPECT_THAT(edge_addresses(&v3, &f2), ::testing::UnorderedElementsAre(&e6));
}
tx_engine.Abort(*tx);
}