mongo/jstests/core/explain_missing_collection.js

48 lines
1.3 KiB
JavaScript

/**
* Test explaining various operations against a non-existent collection.
* @tags: [assumes_no_implicit_collection_creation_after_drop]
*/
(function() {
var missingColl = db.explain_null_collection;
var explain;
var explainColl;
// .find()
missingColl.drop();
explain = missingColl.explain("executionStats").find().finish();
assert.commandWorked(explain);
assert("executionStats" in explain);
// .count()
missingColl.drop();
explain = missingColl.explain("executionStats").count();
assert.commandWorked(explain);
assert("executionStats" in explain);
// .remove()
missingColl.drop();
explain = missingColl.explain("executionStats").remove({a: 1});
assert.commandWorked(explain);
assert("executionStats" in explain);
// .update() with upsert: false
missingColl.drop();
explainColl = missingColl.explain("executionStats");
explain = explainColl.update({a: 1}, {b: 1});
assert.commandWorked(explain);
assert("executionStats" in explain);
// .update() with upsert: true
missingColl.drop();
explainColl = missingColl.explain("executionStats");
explain = explainColl.update({a: 1}, {b: 1}, {upsert: true});
assert.commandWorked(explain);
assert("executionStats" in explain);
// .aggregate()
missingColl.drop();
explain = missingColl.explain("executionStats").aggregate([{$match: {a: 1}}]);
assert.commandWorked(explain);
}());