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/**
* @tags: [
* requires_capped,
* requires_fastcount,
* requires_non_retryable_commands,
* uses_testing_only_commands,
* requires_emptycapped,
* # capped collections connot be sharded
* assumes_unsharded_collection,
* # emptycapped command is not supported on mongos
* assumes_against_mongod_not_mongos,
* no_selinux,
* ]
*/
t = db.capped_empty;
t.drop();
db.createCollection(t.getName(), {capped: true, size: 100});
t.insert({x: 1});
t.insert({x: 2});
t.insert({x: 3});
t.createIndex({x: 1});
assert.eq(3, t.count());
t.runCommand("emptycapped");
assert.eq(0, t.count());
t.insert({x: 1});
t.insert({x: 2});
t.insert({x: 3});
assert.eq(3, t.count());
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