mirror of https://gitee.com/bigwinds/arangodb
121 lines
4.2 KiB
JavaScript
121 lines
4.2 KiB
JavaScript
/*jshint globalstrict:false, strict:false, maxlen: 500 */
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/*global assertEqual, AQL_EXPLAIN */
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////////////////////////////////////////////////////////////////////////////////
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/// @brief tests for cost estimation
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2012 triagens 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 triAGENS GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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var jsunity = require("jsunity");
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var db = require("@arangodb").db;
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var helper = require("@arangodb/aql-helper");
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test suite
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////////////////////////////////////////////////////////////////////////////////
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function optimizerCostsTestSuite () {
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var c;
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return {
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setUp : function () {
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db._drop("UnitTestsCollection");
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c = db._create("UnitTestsCollection");
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for (var i = 0; i < 150; ++i) {
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c.save({ _key: "test" + i, value: i });
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}
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},
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tearDown : function () {
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db._drop("UnitTestsCollection");
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},
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test cost of EnumerateListNode
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////////////////////////////////////////////////////////////////////////////////
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testEnumerateListNodeConst : function () {
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var query = "FOR i IN [ 1, 2, 3 ] RETURN i";
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var plan = AQL_EXPLAIN(query);
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var node = helper.findExecutionNodes(plan, "EnumerateListNode")[0];
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// number of nodes can be estimated properly
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assertEqual("EnumerateListNode", node.type);
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assertEqual(3, node.estimatedNrItems);
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},
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test cost of EnumerateListNode
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////////////////////////////////////////////////////////////////////////////////
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testEnumerateListNodeFunction : function () {
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var query = "FOR i IN NOOPT([ 1, 2, 3 ]) RETURN i";
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var plan = AQL_EXPLAIN(query);
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var node = helper.findExecutionNodes(plan, "EnumerateListNode")[0];
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// number of nodes cannot be estimated properly due to function call
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assertEqual("EnumerateListNode", node.type);
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assertEqual(100, node.estimatedNrItems);
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},
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test cost of EnumerateListNode
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////////////////////////////////////////////////////////////////////////////////
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testEnumerateListNodeSubquery : function () {
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var query = "FOR i IN (FOR j IN [ 1, 2, 3, 4 ] RETURN j) RETURN i";
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var plan = AQL_EXPLAIN(query, { }, { optimizer: { "rules" : [ "-all" ] } });
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var node = helper.findExecutionNodes(plan, "EnumerateListNode")[0];
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// number of nodes cannot be estimated properly due to function call
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assertEqual("EnumerateListNode", node.type);
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assertEqual(4, node.estimatedNrItems);
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// find the subquery node of the plan
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node = helper.findExecutionNodes(plan, "SubqueryNode")[0];
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// subquery always produces one result
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assertEqual(1, node.estimatedNrItems);
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// find the enumeratelistnode in the subquery
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node = helper.findExecutionNodes(node.subquery, "EnumerateListNode")[0];
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assertEqual(4, node.estimatedNrItems);
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}
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};
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief executes the test suite
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////////////////////////////////////////////////////////////////////////////////
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jsunity.run(optimizerCostsTestSuite);
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return jsunity.done();
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