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/**
* Tests the behavior of views when its backing collection is dropped, as well as the behavior of
* system.views when views are dropped.
* @tags: [requires_find_command]
*/
(function() {
"use strict";
let viewsDBName = "views_drop";
let viewsDB = db.getSiblingDB(viewsDBName);
viewsDB.dropDatabase();
// Create collection and a view on it.
assert.writeOK(viewsDB.coll.insert({x: 1}));
assert.commandWorked(viewsDB.createView("view", "coll", []));
assert.eq(
viewsDB.view.find({}, {_id: 0}).toArray(), [{x: 1}], "couldn't find expected doc in view");
// Drop collection, view and system.views in that order, checking along the way.
assert(viewsDB.coll.drop(), "couldn't drop coll");
assert.eq(viewsDB.view.find().toArray(), [], "view isn't empty after dropping coll");
assert(viewsDB.view.drop(), "couldn't drop view");
assert.eq(
viewsDB.system.views.find().toArray(), [], "system.views isn't empty after dropping view");
assert(viewsDB.system.views.drop(), "couldn't drop system.views");
// Database should now be empty.
let res = viewsDB.runCommand({listCollections: 1});
assert.commandWorked(res);
assert.eq(res.cursor.firstBatch.filter((entry) => entry.name != "system.indexes"),
[],
viewsDBName + " is not empty after deleting views and system.views");
})();
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