/**
 * 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});
}());