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/**
* Test projecting DBRef fields ($ref, $id, $db) in views.
*
* Legacy find() queries do not support views, so must use the find() command.
* @tags: [
* requires_find_command,
* ]
*/
(function() {
"use strict";
const viewsDB = db.getSiblingDB("views_dbref_projection");
assert.commandWorked(viewsDB.dropDatabase());
assert.commandWorked(
viewsDB.baseColl.insert({_id: 0, link: new DBRef("otherColl", "someId", viewsDB.getName())}));
assert.commandWorked(viewsDB.runCommand({create: "view", viewOn: "baseColl"}));
// Check that the view and base collection return the same thing.
function checkViewAndBaseCollection(projection, expectedResult) {
const baseRes = viewsDB.baseColl.find({}, projection).toArray();
const viewRes = viewsDB.view.find({}, projection).toArray();
assert.eq(baseRes, viewRes);
assert.eq(expectedResult, baseRes);
}
checkViewAndBaseCollection({"link.$ref": 1}, [{_id: 0, link: {$ref: "otherColl"}}]);
checkViewAndBaseCollection({"link.$db": 1}, [{_id: 0, link: {$db: viewsDB.getName()}}]);
checkViewAndBaseCollection({"link.$id": 1}, [{_id: 0, link: {$id: "someId"}}]);
}());
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