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'use strict';
/**
* count_limit_skip.js
*
* Runs count with skip, limit, and a query (without using hint)
* resulting in a collection scan and then verifies the result.
* Each thread picks a random 'modulus' in range [5, 10]
* and a random 'countPerNum' in range [50, 100]
* and then inserts 'modulus * countPerNum' documents. [250, 1000]
* Each thread inserts docs into a unique collection.
*/
load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
load('jstests/concurrency/fsm_workloads/count.js'); // for $config
load('jstests/concurrency/fsm_workload_helpers/drop_utils.js'); // for dropCollections
var $config = extendWorkload($config, function($config, $super) {
$config.data.prefix = 'count_fsm_q_l_s';
$config.data.getCount = function getCount(db, predicate) {
var query = Object.extend({ tid: this.tid }, predicate);
return db[this.threadCollName].find(query)
.skip(this.countPerNum - 1)
.limit(10).count(true);
};
$config.states.init = function init(db, collName) {
this.threadCollName = this.prefix + '_' + this.tid;
$super.states.init.apply(this, arguments);
};
$config.states.count = function count(db, collName) {
assertWhenOwnColl.eq(this.getCount(db),
// having done 'skip(this.countPerNum - 1).limit(10)'
10);
var num = Random.randInt(this.modulus);
assertWhenOwnColl.eq(this.getCount(db, { i: num }),
// having done 'skip(this.countPerNum - 1).limit(10)'
1);
};
$config.teardown = function teardown(db, collName) {
var pattern = new RegExp('^' + this.prefix + '_\\d+$');
dropCollections(db, pattern);
$super.teardown.apply(this, arguments);
};
return $config;
});
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