mirror of https://gitee.com/bigwinds/arangodb
251 lines
8.5 KiB
C++
251 lines
8.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Tobias Goedderz
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/// @author Michael Hackstein
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/// @author Heiko Kernbach
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/// @author Jan Christoph Uhde
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////////////////////////////////////////////////////////////////////////////////
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#include "RowFetcherHelper.h"
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#include "catch.hpp"
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#include "fakeit.hpp"
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#include "Aql/AqlItemBlock.h"
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#include "Aql/Ast.h"
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#include "Aql/CalculationExecutor.h"
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#include "Aql/ExecutionBlockImpl.h"
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#include "Aql/ExecutorInfos.h"
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#include "Aql/OutputAqlItemRow.h"
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#include "Aql/ResourceUsage.h"
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#include "Aql/SingleRowFetcher.h"
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#include "Transaction/Context.h"
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#include "Transaction/Methods.h"
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#include <velocypack/Builder.h>
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#include <velocypack/velocypack-aliases.h>
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// required for QuerySetup
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#include "../Mocks/Servers.h"
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// Query
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#include "RestServer/AqlFeature.h"
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#include "RestServer/TraverserEngineRegistryFeature.h"
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using namespace arangodb;
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using namespace arangodb::aql;
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namespace arangodb {
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namespace tests {
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namespace aql {
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// TODO Add tests for both
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// CalculationExecutor<CalculationType::V8Condition> and
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// CalculationExecutor<CalculationType::Reference>!
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SCENARIO("CalculationExecutor", "[AQL][EXECUTOR][CALC]") {
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ExecutionState state;
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// create block manager
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ResourceMonitor monitor;
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AqlItemBlockManager itemBlockManager{&monitor};
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//// create query and expression
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mocks::MockAqlServer server{};
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std::unique_ptr<arangodb::aql::Query> fakedQuery = server.createFakeQuery();
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Ast ast{fakedQuery.get()};
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// build expression to evaluate
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AstNode* one = ast.createNodeValueInt(1);
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Variable var{"a", 0};
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ast.scopes()->start(ScopeType::AQL_SCOPE_MAIN);
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ast.scopes()->addVariable(&var);
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AstNode* a = ast.createNodeReference("a");
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ast.scopes()->endCurrent();
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AstNode* node =
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ast.createNodeBinaryOperator(AstNodeType::NODE_TYPE_OPERATOR_BINARY_PLUS, a, one);
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ExecutionPlan plan{&ast};
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Expression expr(&plan, &ast, node);
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auto outRegID = RegisterId(1);
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auto inRegID = RegisterId(0);
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CalculationExecutorInfos infos(outRegID /*out reg*/, RegisterId(1) /*in width*/,
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RegisterId(2) /*out width*/,
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std::unordered_set<RegisterId>{} /*to clear*/,
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std::unordered_set<RegisterId>{} /*to keep*/,
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*fakedQuery.get() /*query*/, expr /*expression*/,
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std::vector<Variable const*>{&var} /*expression in variables*/,
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std::vector<RegisterId>{inRegID} /*expression in registers*/
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);
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GIVEN("there are no rows upstream") {
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SharedAqlItemBlockPtr block{new AqlItemBlock(itemBlockManager, 1000, 2)};
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VPackBuilder input;
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WHEN("the producer does not wait") {
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SingleRowFetcherHelper<true> fetcher(input.steal(), false);
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CalculationExecutor<CalculationType::Condition> testee(fetcher, infos);
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// Use this instead of std::ignore, so the tests will be noticed and
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// updated when someone changes the stats type in the return value of
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// EnumerateListExecutor::produceRows().
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NoStats stats{};
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THEN("the executor should return DONE with nullptr") {
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OutputAqlItemRow result{std::move(block), infos.getOutputRegisters(),
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infos.registersToKeep(), infos.registersToClear()};
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std::tie(state, stats) = testee.produceRows(result);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!result.produced());
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}
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}
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WHEN("the producer waits") {
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SingleRowFetcherHelper<true> fetcher(input.steal(), true);
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CalculationExecutor<CalculationType::Condition> testee(fetcher, infos);
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// Use this instead of std::ignore, so the tests will be noticed and
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// updated when someone changes the stats type in the return value of
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// EnumerateListExecutor::produceRows().
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NoStats stats{};
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THEN("the executor should first return WAIT with nullptr") {
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OutputAqlItemRow result{std::move(block), infos.getOutputRegisters(),
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infos.registersToKeep(), infos.registersToClear()};
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std::tie(state, stats) = testee.produceRows(result);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!result.produced());
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AND_THEN("the executor should return DONE with nullptr") {
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std::tie(state, stats) = testee.produceRows(result);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!result.produced());
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}
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}
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}
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} // GIVEN
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GIVEN("there are rows in the upstream") {
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SharedAqlItemBlockPtr block{new AqlItemBlock(itemBlockManager, 1000, 2)};
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auto input = VPackParser::fromJson("[ [0], [1], [2] ]");
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WHEN("the producer does not wait") {
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SingleRowFetcherHelper<true> fetcher(input->steal(), false);
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CalculationExecutor<CalculationType::Condition> testee(fetcher, infos);
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NoStats stats{};
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THEN("the executor should return the rows") {
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OutputAqlItemRow row{std::move(block), infos.getOutputRegisters(),
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infos.registersToKeep(), infos.registersToClear()};
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// 1
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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// 2
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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// 3
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(row.produced());
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row.advanceRow();
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!row.produced());
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}
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// verify calculation
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AqlValue value;
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auto block = row.stealBlock();
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for (std::size_t index = 0; index < 3; index++) {
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value = block->getValue(index, outRegID);
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REQUIRE(value.isNumber());
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REQUIRE(value.toInt64() == index + 1);
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}
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} // THEN
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} // WHEN
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WHEN("the producer waits") {
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SingleRowFetcherHelper<true> fetcher(input->steal(), true);
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CalculationExecutor<CalculationType::Condition> testee(fetcher, infos);
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NoStats stats{};
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THEN("the executor should return the rows") {
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OutputAqlItemRow row{std::move(block), infos.getOutputRegisters(),
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infos.registersToKeep(), infos.registersToClear()};
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// waiting
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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// 1
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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// waiting
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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// 2
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::HASMORE);
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REQUIRE(row.produced());
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row.advanceRow();
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// waiting
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::WAITING);
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REQUIRE(!row.produced());
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// 3
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(row.produced());
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row.advanceRow();
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AND_THEN("The output should stay stable") {
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std::tie(state, stats) = testee.produceRows(row);
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REQUIRE(state == ExecutionState::DONE);
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REQUIRE(!row.produced());
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}
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}
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}
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}
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} // SCENARIO
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} // namespace aql
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} // namespace tests
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} // namespace arangodb
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