mongo/jstests/aggregation/expressions/strings_null_byte.js

27 lines
1.0 KiB
JavaScript

// ensure strings containing null characters dont end at that null
const c = db[jsTestName()];
c.drop();
assert.commandWorked(c.insertOne({foo: "as\0df"}));
// compare the whole string, they should match
assert.eq(c.aggregate({$project: {_id: 0, matches: {$eq: ["as\0df", "$foo"]}}}).toArray(), [{matches: true}]);
// compare with the substring containing only the up to the null, they should not match
assert.eq(
c
.aggregate({
$project: {_id: 0, matches: {$eq: ["as\0df", {$substrBytes: ["$foo", 0, 3]}]}},
})
.toArray(),
[{matches: false}],
);
// partial the other way shouldnt work either
assert.eq(c.aggregate({$project: {_id: 0, matches: {$eq: ["as", "$foo"]}}}).toArray(), [{matches: false}]);
// neither should one that differs after the null
assert.eq(c.aggregate({$project: {_id: 0, matches: {$eq: ["as\0de", "$foo"]}}}).toArray(), [{matches: false}]);
// should assert on fieldpaths with a null
assert.throws(function () {
c.aggregate({$project: {_id: 0, matches: {$eq: ["as\0df", "$f\0oo"]}}});
});