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/**
* Test running the 'captrunc' command on various kinds of collections:
* - indexed capped collections
* - nonexistent collections
* - non-capped collections
*
* This test fails with the ephemeralForTest storage engine.
* @tags: [SERVER-21658, requires_capped]
*/
(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}));
}
// It is an error to try and remove more documents than what exist in the capped collection.
assert.commandFailed(db.runCommand({captrunc: "capped_truncate", n: 20}),
"captrunc didn't return an error when attempting to remove more" +
" documents than what the collection contains");
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");
// It is an error to run the captrunc command on a nonexistent collection.
assert.commandFailed(db.runCommand({captrunc: "nonexistent", n: 1}),
"captrunc didn't return an error for a nonexistent collection");
// It is an error to run the captrunc command on a non-capped collection.
var collName = "noncapped";
db[collName].drop();
assert.commandWorked(db.runCommand({create: collName, capped: false}));
for (var j = 1; j <= 10; j++) {
assert.writeOK(db[collName].insert({x: j}));
}
assert.commandFailed(db.runCommand({captrunc: collName, n: 5}),
"captrunc didn't return an error for a non-capped collection");
})();
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