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// Tests that sorting by a field that contains an array will sort by the minimum element in that
// array.
(function() {
"use strict";
const coll = db.foo;
coll.drop();
assert.writeOK(coll.insert([{_id: 2, a: [2, 3]}, {_id: 3, a: [2, 4]}, {_id: 4, a: [2, 1]}]));
const expectedOrder = [{_id: 4, a: [2, 1]}, {_id: 2, a: [2, 3]}, {_id: 3, a: [2, 4]}];
assert.eq(coll.aggregate([{$sort: {a: 1, _id: 1}}]).toArray(), expectedOrder);
assert.eq(coll.find().sort({a: 1, _id: 1}).toArray(), expectedOrder);
assert.commandWorked(coll.ensureIndex({a: 1}));
assert.eq(coll.aggregate([{$sort: {a: 1, _id: 1}}]).toArray(), expectedOrder);
assert.eq(coll.find().sort({a: 1, _id: 1}).toArray(), expectedOrder);
}());
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