46 lines
1.6 KiB
JavaScript
46 lines
1.6 KiB
JavaScript
'use strict';
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/**
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* explain_aggregate.js
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*
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* Runs explain() and aggregate() on a collection.
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*
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*/
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load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
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load('jstests/concurrency/fsm_workloads/explain.js'); // for $config
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var $config = extendWorkload($config, function($config, $super) {
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function assertCursorStages(num, obj) {
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assertAlways(obj.stages, tojson(obj));
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assertAlways.eq(num, obj.stages.length, tojson(obj.stages));
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assertAlways(obj.stages[0].$cursor, tojson(obj.stages[0]));
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assertAlways(obj.stages[0].$cursor.hasOwnProperty('queryPlanner'),
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tojson(obj.stages[0].$cursor));
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}
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$config.states = Object.extend({
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explainMatch: function explainMatch(db, collName) {
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var res = db[collName].explain().aggregate([{$match: {i: this.nInserted / 2}}]);
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assertAlways.commandWorked(res);
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// stages reported: $cursor
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assertCursorStages(1, res);
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},
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explainMatchProject: function explainMatchProject(db, collName) {
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var res = db[collName].explain().aggregate(
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[{$match: {i: this.nInserted / 3}}, {$project: {i: 1}}]);
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assertAlways.commandWorked(res);
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// stages reported: $cursor, $project
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assertCursorStages(2, res);
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}
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},
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$super.states);
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$config.transitions = Object.extend(
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{explain: $config.data.assignEqualProbsToTransitions($config.states)}, $super.transitions);
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return $config;
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});
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