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/**
* Test 'captrunc' command on indexed capped collections
*/
(function() {
'use strict';
db.capped_truncate.drop();
assert.commandWorked(db.runCommand({ create: "capped_truncate",
capped: true,
size: 1000,
autoIndexId: true }));
var t = db.capped_truncate;
// It is an error to remove a non-positive number of documents.
assert.commandFailed(db.runCommand({ captrunc: "capped_truncate", n: -1 }),
"captrunc didn't return an error when attempting to remove a negative " +
"number of documents");
assert.commandFailed(db.runCommand({ captrunc: "capped_truncate", n: 0 }),
"captrunc didn't return an error when attempting to remove 0 documents");
for (var j = 1; j <= 10; j++) {
assert.writeOK(t.insert({x:j}));
}
assert.commandWorked(db.runCommand({ captrunc: "capped_truncate", n: 5, inc: false }));
assert.eq(5, t.count(), "wrong number of documents in capped collection after truncate");
assert.eq(5, t.distinct("_id").length, "wrong number of entries in _id index after truncate");
var last = t.find({},{_id:1}).sort({_id:-1}).next();
assert.neq(null, t.findOne({_id: last._id}),
tojson(last) + " is in _id index, but not in capped collection after truncate");
})();
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