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/**
* Test that a $function behaves as expected when its return value is a BSON scalar, i.e. a value
* that is not an object or array.
*
* @tags: [requires_fcv_44]
*/
(function() {
'use strict';
const coll = db.return_bson_scalare_from_js_function;
coll.drop();
coll.insert({name: "Boolean", expected: "Boolean", x: true});
coll.insert({name: "String", expected: "String", x: "foo"});
coll.insert({name: "Number", expected: "Number", x: 1});
coll.insert({name: "NumberLong", expected: "NumberLong", x: NumberLong("1")});
coll.insert({name: "NumberDecimal", expected: "NumberDecimal", x: NumberDecimal("1")});
coll.insert({name: "ObjectId", expected: "ObjectId", x: ObjectId()});
coll.insert({name: "BinData", expected: "BinData", x: BinData(0, "")});
coll.insert({name: "Timestamp", expected: "Timestamp", x: Timestamp(1, 1)});
coll.insert({name: "MinKey", expected: "MinKey", x: MinKey()});
coll.insert({name: "MaxKey", expected: "MaxKey", x: MaxKey()});
coll.insert({name: "RegExp", expected: "RegExp", x: /foo/g});
coll.insert({name: "RegExp-with-slash", expected: "RegExp", x: /\/foo/g});
coll.insert({name: "Date", expected: "Date", x: new Date()});
coll.insert({name: "Code", expected: "Code", x: Code("function() { return 1; }")});
// Note that Symbol is not supported: SERVER-63709, SERVER-63711.
// Although 'x' has "NumberInt" type in the collection, it behaves as a native Javascript (double)
// number in this test. The ValueWriter that translates the $function return value converts all
// NumberInt values to native numbers so they are safe to use in comparisons. See SERVER-5424.
coll.insert({name: "NumberInt", expected: "Number", x: NumberInt("1")});
const pipeline = [{
$addFields: {
nested: {
$function: {
body: function(x) {
return {x: x};
},
args: ["$x"],
lang: "js",
}
},
toplevel: {
$function: {
body: function(x) {
return x;
},
args: ["$x"],
lang: "js",
}
},
}
}];
coll.aggregate(pipeline).forEach(doc => {
assert.eq(doc.expected, doc.nested.x.constructor.name, doc);
assert.eq(doc.expected, doc.toplevel.constructor.name, doc);
});
}());
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