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mongo/jstests/core/bulk_insert_capped.js

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JavaScript

/**
* SERVER-21488 Test that multi inserts into capped collections don't cause corruption.
*
* Note: this file must have a name that starts with "bulk" so it gets run by bulk_gle_passthrough.
*
* @tags: [
* # Cannot implicitly shard accessed collections because of
* # collection existing when none expected.
* assumes_no_implicit_collection_creation_after_drop,
* requires_capped,
* # The "max" option of a capped collection can be temporarily exceeded
* # before a txn is committed.
* does_not_support_transactions,
* uses_full_validation,
* ]
*/
(function() {
"use strict";
var t = db.capped_multi_insert;
t.drop();
db.createCollection(t.getName(), {capped: true, size: 16 * 1024, max: 1});
assert.commandWorked(t.insert([{_id: 1}, {_id: 2}]));
// Ensure the collection is valid.
var res = t.validate({full: true});
assert(res.valid, tojson(res));
// Ensure that various ways of iterating the collection only return one document.
assert.eq(t.find().itcount(), 1); // Table scan.
assert.eq(t.find({}, {_id: 1}).hint({_id: 1}).itcount(), 1); // Index only (covered).
assert.eq(t.find().hint({_id: 1}).itcount(), 1); // Index scan with fetch.
// Ensure that the second document is the one that is kept.
assert.eq(t.findOne(), {_id: 2});
}());