mirror of https://gitee.com/bigwinds/arangodb
112 lines
3.5 KiB
JavaScript
112 lines
3.5 KiB
JavaScript
/*jshint globalstrict:false, strict:false */
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/*global assertEqual, assertTrue, fail */
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test the skiplist index, selectivity estimates
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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 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 Michael Hackstein
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/// @author Copyright 2018, ArangoDB GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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var jsunity = require("jsunity");
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var internal = require("internal");
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function SkiplistIndexSuite() {
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'use strict';
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const cn = "UnitTestsCollectionSkip";
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let collection = null;
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return {
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////////////////////////////////////////////////////////////////////////////////
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/// @brief set up
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////////////////////////////////////////////////////////////////////////////////
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setUp : function () {
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internal.db._drop(cn);
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collection = internal.db._create(cn);
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},
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////////////////////////////////////////////////////////////////////////////////
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/// @brief tear down
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////////////////////////////////////////////////////////////////////////////////
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tearDown : function () {
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collection.drop();
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collection = null;
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},
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Validate that selectivity estimate is not modified if the transaction
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/// is aborted.
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////////////////////////////////////////////////////////////////////////////////
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testSelectivityAfterAbortion : function () {
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let idx = collection.ensureSkiplist("value");
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let docs = [];
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for (let i = 0; i < 1000; ++i) {
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docs.push({value: i % 100});
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}
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collection.save(docs);
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idx = collection.ensureSkiplist("value");
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internal.waitForEstimatorSync(); // make sure estimates are consistent
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idx = collection.ensureSkiplist("value"); // fetch new estimates
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let oldEstimate = idx.selectivityEstimate;
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assertTrue(oldEstimate >= 0);
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assertTrue(oldEstimate <= 1);
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try {
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internal.db._executeTransaction({
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collections: {write: cn},
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action: function () {
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const cn = "UnitTestsCollectionSkip";
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let docs = [];
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for (let i = 0; i < 1000; ++i) {
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docs.push({value: 1});
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}
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// This should significantly modify the estimate
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// if successful
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require('@arangodb').db[cn].save(docs);
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throw "banana";
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}
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});
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fail();
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} catch (e) {
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assertEqual(e.errorMessage, "banana");
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// Insert failed.
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// Validate that estimate is non-modified
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idx = collection.ensureSkiplist("value");
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internal.waitForEstimatorSync(); // make sure estimates are consistent
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assertEqual(idx.selectivityEstimate, oldEstimate);
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}
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},
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};
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}
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jsunity.run(SkiplistIndexSuite);
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return jsunity.done();
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