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/**
* convert_to_capped_collection_index.js
*
* Creates a non-capped collection. Converts it to a
* capped collection. After each iteration, truncates the
* collection, ensuring that the storage size of the
* collection is still a multiple of 256.
*
* MongoDB raises the storage size of a capped collection
* to an integer multiple of 256.
*
* Make sure that we can create indexes on any collection
* but that only the _id index remains after (re-)converting
* to a capped collection.
*/
load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
load('jstests/concurrency/fsm_workloads/convert_to_capped_collection.js'); // for $config
var $config = extendWorkload($config, function($config, $super) {
$config.states.convertToCapped = function convertToCapped(db, collName) {
assertWhenOwnDB.commandWorked(db[this.threadCollName].ensureIndex({i: 1, rand: 1}));
assertWhenOwnDB.eq(2, db[this.threadCollName].getIndexes().length);
$super.states.convertToCapped.apply(this, arguments);
};
return $config;
});
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