1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/**
* Tests that empty objects as expressions in $set and $addFields aggregation stages are permitted.
*
* @tags: [
* requires_fcv_61
* ]
*/
(function() {
"use strict";
// For arrayEq.
load("jstests/aggregation/extras/utils.js");
const collName = jsTest.name();
const coll = db.getCollection(collName);
coll.drop();
let initObj = {
_id: 1,
arrayField: [1, {subField: [2, {}]}, [1]],
objField: {p: {q: 1}, subArr: [1]},
otherField: "value"
};
assert.commandWorked(coll.insert(initObj));
function assertAddFieldsResult(projection, expectedResults) {
assert.eq(coll.aggregate([{$addFields: projection}]).toArray(), [expectedResults]);
}
// Test that empty objects as expressions are permitted, with and without the $literal wrapper.
initObj["otherField"] = {};
assertAddFieldsResult({"otherField": {}}, initObj);
assertAddFieldsResult({"otherField": {$literal: {}}}, initObj);
// Test that nested empty objects are permitted.
initObj["otherField"]["b"] = {};
assertAddFieldsResult({"otherField": {"b": {}}}, initObj);
// Test that empty literal definitions are permitted.
initObj["otherField"] = [];
assertAddFieldsResult({"otherField": []}, initObj);
initObj["otherField"] = "value"; // Reset the input object.
// Test that a new empty field is permitted.
initObj["newField"] = {};
assertAddFieldsResult({"newField": {}}, initObj);
})();
|
