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8cd9f696cf
memgraph/tests/unit/interpreter.cpp
antonio2368 8cd9f696cf
Multiple isolation levels (#171) 
This PR introduces READ COMMITTED and READ UNCOMMITTED isolation levels.
The isolation level can be set with a config or with a query for different scopes.
2021-06-14 15:47:57 +02:00

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#include <cstdlib>
#include <filesystem>
#include "communication/bolt/v1/value.hpp"
#include "communication/result_stream_faker.hpp"
#include "glue/communication.hpp"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "query/exceptions.hpp"
#include "query/interpreter.hpp"
#include "query/stream.hpp"
#include "query/typed_value.hpp"
#include "query_common.hpp"
#include "storage/v2/isolation_level.hpp"
#include "storage/v2/property_value.hpp"
#include "utils/csv_parsing.hpp"
#include "utils/logging.hpp"
namespace {
auto ToEdgeList(const communication::bolt::Value &v) {
std::vector<communication::bolt::Edge> list;
for (auto x : v.ValueList()) {
list.push_back(x.ValueEdge());
}
return list;
};
} // namespace
// TODO: This is not a unit test, but tests/integration dir is chaotic at the
// moment. After tests refactoring is done, move/rename this.
class InterpreterTest : public ::testing::Test {
protected:
storage::Storage db_;
std::filesystem::path data_directory{std::filesystem::temp_directory_path() / "MG_tests_unit_interpreter"};
query::InterpreterContext interpreter_context_{&db_, data_directory};
query::Interpreter interpreter_{&interpreter_context_};
auto Prepare(const std::string &query, const std::map<std::string, storage::PropertyValue> &params = {}) {
ResultStreamFaker stream(&db_);
const auto [header, _, qid] = interpreter_.Prepare(query, params);
stream.Header(header);
return std::pair{std::move(stream), qid};
}
void Pull(ResultStreamFaker *stream, std::optional<int> n = {}, std::optional<int> qid = {}) {
const auto summary = interpreter_.Pull(stream, n, qid);
stream->Summary(summary);
}
/**
* Execute the given query and commit the transaction.
*
* Return the query stream.
*/
auto Interpret(const std::string &query, const std::map<std::string, storage::PropertyValue> &params = {}) {
auto prepare_result = Prepare(query, params);
auto &stream = prepare_result.first;
auto summary = interpreter_.Pull(&stream, {}, prepare_result.second);
stream.Summary(summary);
return std::move(stream);
}
};
TEST_F(InterpreterTest, MultiplePulls) {
{
auto [stream, qid] = Prepare("UNWIND [1,2,3,4,5] as n RETURN n");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "n");
Pull(&stream, 1);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_TRUE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 1);
Pull(&stream, 2);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_TRUE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults().size(), 3U);
ASSERT_EQ(stream.GetResults()[1][0].ValueInt(), 2);
ASSERT_EQ(stream.GetResults()[2][0].ValueInt(), 3);
Pull(&stream);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults().size(), 5U);
ASSERT_EQ(stream.GetResults()[3][0].ValueInt(), 4);
ASSERT_EQ(stream.GetResults()[4][0].ValueInt(), 5);
}
}
// Run query with different ast twice to see if query executes correctly when
// ast is read from cache.
TEST_F(InterpreterTest, AstCache) {
{
auto stream = Interpret("RETURN 2 + 3");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "2 + 3");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 5);
}
{
// Cached ast, different literals.
auto stream = Interpret("RETURN 5 + 4");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 9);
}
{
// Different ast (because of different types).
auto stream = Interpret("RETURN 5.5 + 4");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueDouble(), 9.5);
}
{
// Cached ast, same literals.
auto stream = Interpret("RETURN 2 + 3");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 5);
}
{
// Cached ast, different literals.
auto stream = Interpret("RETURN 10.5 + 1");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueDouble(), 11.5);
}
{
// Cached ast, same literals, different whitespaces.
auto stream = Interpret("RETURN 10.5 + 1");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueDouble(), 11.5);
}
{
// Cached ast, same literals, different named header.
auto stream = Interpret("RETURN 10.5+1");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "10.5+1");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueDouble(), 11.5);
}
}
// Run query with same ast multiple times with different parameters.
TEST_F(InterpreterTest, Parameters) {
{
auto stream =
Interpret("RETURN $2 + $`a b`", {{"2", storage::PropertyValue(10)}, {"a b", storage::PropertyValue(15)}});
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "$2 + $`a b`");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 25);
}
{
// Not needed parameter.
auto stream = Interpret(
"RETURN $2 + $`a b`",
{{"2", storage::PropertyValue(10)}, {"a b", storage::PropertyValue(15)}, {"c", storage::PropertyValue(10)}});
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "$2 + $`a b`");
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 25);
}
{
// Cached ast, different parameters.
auto stream =
Interpret("RETURN $2 + $`a b`", {{"2", storage::PropertyValue("da")}, {"a b", storage::PropertyValue("ne")}});
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueString(), "dane");
}
{
// Non-primitive literal.
auto stream = Interpret(
"RETURN $2", {{"2", storage::PropertyValue(std::vector<storage::PropertyValue>{
storage::PropertyValue(5), storage::PropertyValue(2), storage::PropertyValue(3)})}});
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
auto result = query::test_common::ToIntList(glue::ToTypedValue(stream.GetResults()[0][0]));
ASSERT_THAT(result, testing::ElementsAre(5, 2, 3));
}
{
// Cached ast, unprovided parameter.
ASSERT_THROW(
Interpret("RETURN $2 + $`a b`", {{"2", storage::PropertyValue("da")}, {"ab", storage::PropertyValue("ne")}}),
query::UnprovidedParameterError);
}
}
TEST_F(InterpreterTest, LoadCsv) {
// for debug purposes
auto [stream, qid] = Prepare(R"(LOAD CSV FROM "simple.csv" NO HEADER AS row RETURN row)");
}
// Test bfs end to end.
TEST_F(InterpreterTest, Bfs) {
srand(0);
const auto kNumLevels = 10;
const auto kNumNodesPerLevel = 100;
const auto kNumEdgesPerNode = 100;
const auto kNumUnreachableNodes = 1000;
const auto kNumUnreachableEdges = 100000;
const auto kReachable = "reachable";
const auto kId = "id";
std::vector<std::vector<query::VertexAccessor>> levels(kNumLevels);
int id = 0;
// Set up.
{
auto storage_dba = db_.Access();
query::DbAccessor dba(&storage_dba);
auto add_node = [&](int level, bool reachable) {
auto node = dba.InsertVertex();
MG_ASSERT(node.SetProperty(dba.NameToProperty(kId), storage::PropertyValue(id++)).HasValue());
MG_ASSERT(node.SetProperty(dba.NameToProperty(kReachable), storage::PropertyValue(reachable)).HasValue());
levels[level].push_back(node);
return node;
};
auto add_edge = [&](auto &v1, auto &v2, bool reachable) {
auto edge = dba.InsertEdge(&v1, &v2, dba.NameToEdgeType("edge"));
MG_ASSERT(edge->SetProperty(dba.NameToProperty(kReachable), storage::PropertyValue(reachable)).HasValue());
};
// Add source node.
add_node(0, true);
// Add reachable nodes.
for (int i = 1; i < kNumLevels; ++i) {
for (int j = 0; j < kNumNodesPerLevel; ++j) {
auto node = add_node(i, true);
for (int k = 0; k < kNumEdgesPerNode; ++k) {
auto &node2 = levels[i - 1][rand() % levels[i - 1].size()];
add_edge(node2, node, true);
}
}
}
// Add unreachable nodes.
for (int i = 0; i < kNumUnreachableNodes; ++i) {
auto node = add_node(rand() % kNumLevels, // Not really important.
false);
for (int j = 0; j < kNumEdgesPerNode; ++j) {
auto &level = levels[rand() % kNumLevels];
auto &node2 = level[rand() % level.size()];
add_edge(node2, node, true);
add_edge(node, node2, true);
}
}
// Add unreachable edges.
for (int i = 0; i < kNumUnreachableEdges; ++i) {
auto &level1 = levels[rand() % kNumLevels];
auto &node1 = level1[rand() % level1.size()];
auto &level2 = levels[rand() % kNumLevels];
auto &node2 = level2[rand() % level2.size()];
add_edge(node1, node2, false);
}
ASSERT_FALSE(dba.Commit().HasError());
}
auto stream = Interpret(
"MATCH (n {id: 0})-[r *bfs..5 (e, n | n.reachable and "
"e.reachable)]->(m) RETURN n, r, m");
ASSERT_EQ(stream.GetHeader().size(), 3U);
EXPECT_EQ(stream.GetHeader()[0], "n");
EXPECT_EQ(stream.GetHeader()[1], "r");
EXPECT_EQ(stream.GetHeader()[2], "m");
ASSERT_EQ(stream.GetResults().size(), 5 * kNumNodesPerLevel);
auto dba = db_.Access();
int expected_level = 1;
int remaining_nodes_in_level = kNumNodesPerLevel;
std::unordered_set<int64_t> matched_ids;
for (const auto &result : stream.GetResults()) {
const auto &begin = result[0].ValueVertex();
const auto &edges = ToEdgeList(result[1]);
const auto &end = result[2].ValueVertex();
// Check that path is of expected length. Returned paths should be from
// shorter to longer ones.
EXPECT_EQ(edges.size(), expected_level);
// Check that starting node is correct.
EXPECT_EQ(edges.front().from, begin.id);
EXPECT_EQ(begin.properties.at(kId).ValueInt(), 0);
for (int i = 1; i < static_cast<int>(edges.size()); ++i) {
// Check that edges form a connected path.
EXPECT_EQ(edges[i - 1].to.AsInt(), edges[i].from.AsInt());
}
auto matched_id = end.properties.at(kId).ValueInt();
EXPECT_EQ(edges.back().to, end.id);
// Check that we didn't match that node already.
EXPECT_TRUE(matched_ids.insert(matched_id).second);
// Check that shortest path was found.
EXPECT_TRUE(matched_id > kNumNodesPerLevel * (expected_level - 1) &&
matched_id <= kNumNodesPerLevel * expected_level);
if (!--remaining_nodes_in_level) {
remaining_nodes_in_level = kNumNodesPerLevel;
++expected_level;
}
}
}
// Test shortest path end to end.
TEST_F(InterpreterTest, ShortestPath) {
Interpret(
"CREATE (n:A {x: 1}), (m:B {x: 2}), (l:C {x: 1}), (n)-[:r1 {w: 1 "
"}]->(m)-[:r2 {w: 2}]->(l), (n)-[:r3 {w: 4}]->(l)");
auto stream = Interpret("MATCH (n)-[e *wshortest 5 (e, n | e.w) ]->(m) return e");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "e");
ASSERT_EQ(stream.GetResults().size(), 3U);
auto dba = db_.Access();
std::vector<std::vector<std::string>> expected_results{{"r1"}, {"r2"}, {"r1", "r2"}};
for (const auto &result : stream.GetResults()) {
const auto &edges = ToEdgeList(result[0]);
std::vector<std::string> datum;
datum.reserve(edges.size());
for (const auto &edge : edges) {
datum.push_back(edge.type);
}
bool any_match = false;
for (const auto &expected : expected_results) {
if (expected == datum) {
any_match = true;
break;
}
}
EXPECT_TRUE(any_match);
}
}
TEST_F(InterpreterTest, CreateLabelIndexInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("CREATE INDEX ON :X"), query::IndexInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, CreateLabelPropertyIndexInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("CREATE INDEX ON :X(y)"), query::IndexInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, CreateExistenceConstraintInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("CREATE CONSTRAINT ON (n:A) ASSERT EXISTS (n.a)"), query::ConstraintInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, CreateUniqueConstraintInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("CREATE CONSTRAINT ON (n:A) ASSERT n.a, n.b IS UNIQUE"),
query::ConstraintInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, ShowIndexInfoInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("SHOW INDEX INFO"), query::InfoInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, ShowConstraintInfoInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("SHOW CONSTRAINT INFO"), query::InfoInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, ShowStorageInfoInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("SHOW STORAGE INFO"), query::InfoInMulticommandTxException);
Interpret("ROLLBACK");
}
// NOLINTNEXTLINE(hicpp-special-member-functions)
TEST_F(InterpreterTest, ExistenceConstraintTest) {
Interpret("CREATE CONSTRAINT ON (n:A) ASSERT EXISTS (n.a);");
Interpret("CREATE (:A{a:1})");
Interpret("CREATE (:A{a:2})");
ASSERT_THROW(Interpret("CREATE (:A)"), query::QueryException);
Interpret("MATCH (n:A{a:2}) SET n.a=3");
Interpret("CREATE (:A{a:2})");
Interpret("MATCH (n:A{a:2}) DETACH DELETE n");
Interpret("CREATE (n:A{a:2})");
ASSERT_THROW(Interpret("CREATE CONSTRAINT ON (n:A) ASSERT EXISTS (n.b);"), query::QueryRuntimeException);
}
TEST_F(InterpreterTest, UniqueConstraintTest) {
// Empty property list should result with syntax exception.
ASSERT_THROW(Interpret("CREATE CONSTRAINT ON (n:A) ASSERT IS UNIQUE;"), query::SyntaxException);
ASSERT_THROW(Interpret("DROP CONSTRAINT ON (n:A) ASSERT IS UNIQUE;"), query::SyntaxException);
// Too large list of properties should also result with syntax exception.
{
std::stringstream stream;
stream << " ON (n:A) ASSERT ";
for (size_t i = 0; i < 33; ++i) {
if (i > 0) stream << ", ";
stream << "n.prop" << i;
}
stream << " IS UNIQUE;";
std::string create_query = "CREATE CONSTRAINT" + stream.str();
std::string drop_query = "DROP CONSTRAINT" + stream.str();
ASSERT_THROW(Interpret(create_query), query::SyntaxException);
ASSERT_THROW(Interpret(drop_query), query::SyntaxException);
}
// Providing property list with duplicates results with syntax exception.
ASSERT_THROW(Interpret("CREATE CONSTRAINT ON (n:A) ASSERT n.a, n.b, n.a IS UNIQUE;"), query::SyntaxException);
ASSERT_THROW(Interpret("DROP CONSTRAINT ON (n:A) ASSERT n.a, n.b, n.a IS UNIQUE;"), query::SyntaxException);
// Commit of vertex should fail if a constraint is violated.
Interpret("CREATE CONSTRAINT ON (n:A) ASSERT n.a, n.b IS UNIQUE;");
Interpret("CREATE (:A{a:1, b:2})");
Interpret("CREATE (:A{a:1, b:3})");
ASSERT_THROW(Interpret("CREATE (:A{a:1, b:2})"), query::QueryException);
// Attempt to create a constraint should fail if it's violated.
Interpret("CREATE (:A{a:1, c:2})");
Interpret("CREATE (:A{a:1, c:2})");
ASSERT_THROW(Interpret("CREATE CONSTRAINT ON (n:A) ASSERT n.a, n.c IS UNIQUE;"), query::QueryRuntimeException);
Interpret("MATCH (n:A{a:2, b:2}) SET n.a=1");
Interpret("CREATE (:A{a:2})");
Interpret("MATCH (n:A{a:2}) DETACH DELETE n");
Interpret("CREATE (n:A{a:2})");
// Show constraint info.
{
auto stream = Interpret("SHOW CONSTRAINT INFO");
ASSERT_EQ(stream.GetHeader().size(), 3U);
const auto &header = stream.GetHeader();
ASSERT_EQ(header[0], "constraint type");
ASSERT_EQ(header[1], "label");
ASSERT_EQ(header[2], "properties");
ASSERT_EQ(stream.GetResults().size(), 1U);
const auto &result = stream.GetResults().front();
ASSERT_EQ(result.size(), 3U);
ASSERT_EQ(result[0].ValueString(), "unique");
ASSERT_EQ(result[1].ValueString(), "A");
const auto &properties = result[2].ValueList();
ASSERT_EQ(properties.size(), 2U);
ASSERT_EQ(properties[0].ValueString(), "a");
ASSERT_EQ(properties[1].ValueString(), "b");
}
// Drop constraint.
Interpret("DROP CONSTRAINT ON (n:A) ASSERT n.a, n.b IS UNIQUE;");
// Removing the same constraint twice should not throw any exception.
Interpret("DROP CONSTRAINT ON (n:A) ASSERT n.a, n.b IS UNIQUE;");
}
TEST_F(InterpreterTest, ExplainQuery) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto stream = Interpret("EXPLAIN MATCH (n) RETURN *;");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader().front(), "QUERY PLAN");
std::vector<std::string> expected_rows{" * Produce {n}", " * ScanAll (n)", " * Once"};
ASSERT_EQ(stream.GetResults().size(), expected_rows.size());
auto expected_it = expected_rows.begin();
for (const auto &row : stream.GetResults()) {
ASSERT_EQ(row.size(), 1U);
EXPECT_EQ(row.front().ValueString(), *expected_it);
++expected_it;
}
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for EXPLAIN ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) RETURN *;");
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ExplainQueryMultiplePulls) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto [stream, qid] = Prepare("EXPLAIN MATCH (n) RETURN *;");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader().front(), "QUERY PLAN");
std::vector<std::string> expected_rows{" * Produce {n}", " * ScanAll (n)", " * Once"};
Pull(&stream, 1);
ASSERT_EQ(stream.GetResults().size(), 1);
auto expected_it = expected_rows.begin();
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
EXPECT_EQ(stream.GetResults()[0].front().ValueString(), *expected_it);
++expected_it;
Pull(&stream, 1);
ASSERT_EQ(stream.GetResults().size(), 2);
ASSERT_EQ(stream.GetResults()[1].size(), 1U);
EXPECT_EQ(stream.GetResults()[1].front().ValueString(), *expected_it);
++expected_it;
Pull(&stream);
ASSERT_EQ(stream.GetResults().size(), 3);
ASSERT_EQ(stream.GetResults()[2].size(), 1U);
EXPECT_EQ(stream.GetResults()[2].front().ValueString(), *expected_it);
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for EXPLAIN ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) RETURN *;");
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ExplainQueryInMulticommandTransaction) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
Interpret("BEGIN");
auto stream = Interpret("EXPLAIN MATCH (n) RETURN *;");
Interpret("COMMIT");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader().front(), "QUERY PLAN");
std::vector<std::string> expected_rows{" * Produce {n}", " * ScanAll (n)", " * Once"};
ASSERT_EQ(stream.GetResults().size(), expected_rows.size());
auto expected_it = expected_rows.begin();
for (const auto &row : stream.GetResults()) {
ASSERT_EQ(row.size(), 1U);
EXPECT_EQ(row.front().ValueString(), *expected_it);
++expected_it;
}
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for EXPLAIN ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) RETURN *;");
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ExplainQueryWithParams) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto stream = Interpret("EXPLAIN MATCH (n) WHERE n.id = $id RETURN *;", {{"id", storage::PropertyValue(42)}});
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader().front(), "QUERY PLAN");
std::vector<std::string> expected_rows{" * Produce {n}", " * Filter", " * ScanAll (n)", " * Once"};
ASSERT_EQ(stream.GetResults().size(), expected_rows.size());
auto expected_it = expected_rows.begin();
for (const auto &row : stream.GetResults()) {
ASSERT_EQ(row.size(), 1U);
EXPECT_EQ(row.front().ValueString(), *expected_it);
++expected_it;
}
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for EXPLAIN ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) WHERE n.id = $id RETURN *;", {{"id", storage::PropertyValue("something else")}});
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ProfileQuery) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto stream = Interpret("PROFILE MATCH (n) RETURN *;");
std::vector<std::string> expected_header{"OPERATOR", "ACTUAL HITS", "RELATIVE TIME", "ABSOLUTE TIME"};
EXPECT_EQ(stream.GetHeader(), expected_header);
std::vector<std::string> expected_rows{"* Produce", "* ScanAll", "* Once"};
ASSERT_EQ(stream.GetResults().size(), expected_rows.size());
auto expected_it = expected_rows.begin();
for (const auto &row : stream.GetResults()) {
ASSERT_EQ(row.size(), 4U);
EXPECT_EQ(row.front().ValueString(), *expected_it);
++expected_it;
}
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for PROFILE ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) RETURN *;");
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ProfileQueryMultiplePulls) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto [stream, qid] = Prepare("PROFILE MATCH (n) RETURN *;");
std::vector<std::string> expected_header{"OPERATOR", "ACTUAL HITS", "RELATIVE TIME", "ABSOLUTE TIME"};
EXPECT_EQ(stream.GetHeader(), expected_header);
std::vector<std::string> expected_rows{"* Produce", "* ScanAll", "* Once"};
auto expected_it = expected_rows.begin();
Pull(&stream, 1);
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0].size(), 4U);
ASSERT_EQ(stream.GetResults()[0][0].ValueString(), *expected_it);
++expected_it;
Pull(&stream, 1);
ASSERT_EQ(stream.GetResults().size(), 2U);
ASSERT_EQ(stream.GetResults()[1].size(), 4U);
ASSERT_EQ(stream.GetResults()[1][0].ValueString(), *expected_it);
++expected_it;
Pull(&stream);
ASSERT_EQ(stream.GetResults().size(), 3U);
ASSERT_EQ(stream.GetResults()[2].size(), 4U);
ASSERT_EQ(stream.GetResults()[2][0].ValueString(), *expected_it);
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for PROFILE ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) RETURN *;");
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ProfileQueryInMulticommandTransaction) {
Interpret("BEGIN");
ASSERT_THROW(Interpret("PROFILE MATCH (n) RETURN *;"), query::ProfileInMulticommandTxException);
Interpret("ROLLBACK");
}
TEST_F(InterpreterTest, ProfileQueryWithParams) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto stream = Interpret("PROFILE MATCH (n) WHERE n.id = $id RETURN *;", {{"id", storage::PropertyValue(42)}});
std::vector<std::string> expected_header{"OPERATOR", "ACTUAL HITS", "RELATIVE TIME", "ABSOLUTE TIME"};
EXPECT_EQ(stream.GetHeader(), expected_header);
std::vector<std::string> expected_rows{"* Produce", "* Filter", "* ScanAll", "* Once"};
ASSERT_EQ(stream.GetResults().size(), expected_rows.size());
auto expected_it = expected_rows.begin();
for (const auto &row : stream.GetResults()) {
ASSERT_EQ(row.size(), 4U);
EXPECT_EQ(row.front().ValueString(), *expected_it);
++expected_it;
}
// We should have a plan cache for MATCH ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for PROFILE ... and for inner MATCH ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("MATCH (n) WHERE n.id = $id RETURN *;", {{"id", storage::PropertyValue("something else")}});
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, ProfileQueryWithLiterals) {
EXPECT_EQ(interpreter_context_.plan_cache.size(), 0U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 0U);
auto stream = Interpret("PROFILE UNWIND range(1, 1000) AS x CREATE (:Node {id: x});", {});
std::vector<std::string> expected_header{"OPERATOR", "ACTUAL HITS", "RELATIVE TIME", "ABSOLUTE TIME"};
EXPECT_EQ(stream.GetHeader(), expected_header);
std::vector<std::string> expected_rows{"* CreateNode", "* Unwind", "* Once"};
ASSERT_EQ(stream.GetResults().size(), expected_rows.size());
auto expected_it = expected_rows.begin();
for (const auto &row : stream.GetResults()) {
ASSERT_EQ(row.size(), 4U);
EXPECT_EQ(row.front().ValueString(), *expected_it);
++expected_it;
}
// We should have a plan cache for UNWIND ...
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
// We should have AST cache for PROFILE ... and for inner UNWIND ...
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
Interpret("UNWIND range(42, 4242) AS x CREATE (:Node {id: x});", {});
EXPECT_EQ(interpreter_context_.plan_cache.size(), 1U);
EXPECT_EQ(interpreter_context_.ast_cache.size(), 2U);
}
TEST_F(InterpreterTest, Transactions) {
{
ASSERT_THROW(interpreter_.CommitTransaction(), query::ExplicitTransactionUsageException);
ASSERT_THROW(interpreter_.RollbackTransaction(), query::ExplicitTransactionUsageException);
interpreter_.BeginTransaction();
ASSERT_THROW(interpreter_.BeginTransaction(), query::ExplicitTransactionUsageException);
auto [stream, qid] = Prepare("RETURN 2");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "2");
Pull(&stream, 1);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 2);
interpreter_.CommitTransaction();
}
{
interpreter_.BeginTransaction();
auto [stream, qid] = Prepare("RETURN 2");
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "2");
Pull(&stream, 1);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults()[0].size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueInt(), 2);
interpreter_.RollbackTransaction();
}
}
TEST_F(InterpreterTest, Qid) {
{
interpreter_.BeginTransaction();
auto [stream, qid] = Prepare("RETURN 2");
ASSERT_TRUE(qid);
ASSERT_THROW(Pull(&stream, {}, *qid + 1), query::InvalidArgumentsException);
interpreter_.RollbackTransaction();
}
{
interpreter_.BeginTransaction();
auto [stream1, qid1] = Prepare("UNWIND(range(1,3)) as n RETURN n");
ASSERT_TRUE(qid1);
ASSERT_EQ(stream1.GetHeader().size(), 1U);
EXPECT_EQ(stream1.GetHeader()[0], "n");
auto [stream2, qid2] = Prepare("UNWIND(range(4,6)) as n RETURN n");
ASSERT_TRUE(qid2);
ASSERT_EQ(stream2.GetHeader().size(), 1U);
EXPECT_EQ(stream2.GetHeader()[0], "n");
Pull(&stream1, 1, qid1);
ASSERT_EQ(stream1.GetSummary().count("has_more"), 1);
ASSERT_TRUE(stream1.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream1.GetResults().size(), 1U);
ASSERT_EQ(stream1.GetResults()[0].size(), 1U);
ASSERT_EQ(stream1.GetResults()[0][0].ValueInt(), 1);
auto [stream3, qid3] = Prepare("UNWIND(range(7,9)) as n RETURN n");
ASSERT_TRUE(qid3);
ASSERT_EQ(stream3.GetHeader().size(), 1U);
EXPECT_EQ(stream3.GetHeader()[0], "n");
Pull(&stream2, {}, qid2);
ASSERT_EQ(stream2.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream2.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream2.GetResults().size(), 3U);
ASSERT_EQ(stream2.GetResults()[0].size(), 1U);
ASSERT_EQ(stream2.GetResults()[0][0].ValueInt(), 4);
ASSERT_EQ(stream2.GetResults()[1][0].ValueInt(), 5);
ASSERT_EQ(stream2.GetResults()[2][0].ValueInt(), 6);
Pull(&stream3, 1, qid3);
ASSERT_EQ(stream3.GetSummary().count("has_more"), 1);
ASSERT_TRUE(stream3.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream3.GetResults().size(), 1U);
ASSERT_EQ(stream3.GetResults()[0].size(), 1U);
ASSERT_EQ(stream3.GetResults()[0][0].ValueInt(), 7);
Pull(&stream1, {}, qid1);
ASSERT_EQ(stream1.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream1.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream1.GetResults().size(), 3U);
ASSERT_EQ(stream1.GetResults()[1].size(), 1U);
ASSERT_EQ(stream1.GetResults()[1][0].ValueInt(), 2);
ASSERT_EQ(stream1.GetResults()[2][0].ValueInt(), 3);
Pull(&stream3);
ASSERT_EQ(stream3.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream3.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream3.GetResults().size(), 3U);
ASSERT_EQ(stream3.GetResults()[1].size(), 1U);
ASSERT_EQ(stream3.GetResults()[1][0].ValueInt(), 8);
ASSERT_EQ(stream3.GetResults()[2][0].ValueInt(), 9);
interpreter_.CommitTransaction();
}
}
namespace {
// copied from utils_csv_parsing.cpp - tmp dir management and csv file writer
class TmpCsvDirManager final {
public:
TmpCsvDirManager() { CreateCsvDir(); }
~TmpCsvDirManager() { Clear(); }
const std::filesystem::path &Path() const { return tmp_dir_; }
private:
const std::filesystem::path tmp_dir_{std::filesystem::temp_directory_path() / "csv_directory"};
void CreateCsvDir() {
if (!std::filesystem::exists(tmp_dir_)) {
std::filesystem::create_directory(tmp_dir_);
}
}
void Clear() {
if (!std::filesystem::exists(tmp_dir_)) return;
std::filesystem::remove_all(tmp_dir_);
}
};
class FileWriter {
public:
explicit FileWriter(const std::filesystem::path path) { stream_.open(path); }
FileWriter(const FileWriter &) = delete;
FileWriter &operator=(const FileWriter &) = delete;
FileWriter(FileWriter &&) = delete;
FileWriter &operator=(FileWriter &&) = delete;
void Close() { stream_.close(); }
size_t WriteLine(const std::string_view line) {
if (!stream_.is_open()) {
return 0;
}
stream_ << line << std::endl;
// including the newline character
return line.size() + 1;
}
private:
std::ofstream stream_;
};
std::string CreateRow(const std::vector<std::string> &columns, const std::string_view delim) {
return utils::Join(columns, delim);
}
} // namespace
TEST_F(InterpreterTest, LoadCsvClause) {
auto dir_manager = TmpCsvDirManager();
const auto csv_path = dir_manager.Path() / "file.csv";
auto writer = FileWriter(csv_path);
const std::string delimiter{"|"};
const std::vector<std::string> header{"A", "B", "C"};
writer.WriteLine(CreateRow(header, delimiter));
const std::vector<std::string> good_columns_1{"a", "b", "c"};
writer.WriteLine(CreateRow(good_columns_1, delimiter));
const std::vector<std::string> bad_columns{"\"\"1", "2", "3"};
writer.WriteLine(CreateRow(bad_columns, delimiter));
const std::vector<std::string> good_columns_2{"d", "e", "f"};
writer.WriteLine(CreateRow(good_columns_2, delimiter));
writer.Close();
{
const std::string query = fmt::format(R"(LOAD CSV FROM "{}" WITH HEADER IGNORE BAD DELIMITER "{}" AS x RETURN x.A)",
csv_path.string(), delimiter);
auto [stream, qid] = Prepare(query);
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "x.A");
Pull(&stream, 1);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_TRUE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults().size(), 1U);
ASSERT_EQ(stream.GetResults()[0][0].ValueString(), "a");
Pull(&stream, 1);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults().size(), 2U);
ASSERT_EQ(stream.GetResults()[1][0].ValueString(), "d");
}
{
const std::string query = fmt::format(R"(LOAD CSV FROM "{}" WITH HEADER IGNORE BAD DELIMITER "{}" AS x RETURN x.C)",
csv_path.string(), delimiter);
auto [stream, qid] = Prepare(query);
ASSERT_EQ(stream.GetHeader().size(), 1U);
EXPECT_EQ(stream.GetHeader()[0], "x.C");
Pull(&stream);
ASSERT_EQ(stream.GetSummary().count("has_more"), 1);
ASSERT_FALSE(stream.GetSummary().at("has_more").ValueBool());
ASSERT_EQ(stream.GetResults().size(), 2U);
ASSERT_EQ(stream.GetResults()[0][0].ValueString(), "c");
ASSERT_EQ(stream.GetResults()[1][0].ValueString(), "f");
}
}
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