1 files changed, 53 insertions, 0 deletions
diff --git a/jstests/core/query/mr/mr_sort.js b/jstests/core/query/mr/mr_sort.js
new file mode 100644
index 00000000000..083635ff038
--- /dev/null
+++ b/jstests/core/query/mr/mr_sort.js
@@ -0,0 +1,53 @@
+// Cannot implicitly shard accessed collections because the "limit" option to the "mapReduce"
+// command cannot be used on a sharded collection.
+// The test runs commands that are not allowed with security token: mapReduce.
+// @tags: [
+//   not_allowed_with_security_token,
+//   assumes_unsharded_collection,
+//   # mapReduce does not support afterClusterTime.
+//   does_not_support_causal_consistency,
+//   does_not_support_stepdowns,
+//   uses_map_reduce_with_temp_collections,
+// ]
+
+t = db.mr_sort;
+t.drop();
+
+t.createIndex({x: 1});
+
+t.insert({x: 1});
+t.insert({x: 10});
+t.insert({x: 2});
+t.insert({x: 9});
+t.insert({x: 3});
+t.insert({x: 8});
+t.insert({x: 4});
+t.insert({x: 7});
+t.insert({x: 5});
+t.insert({x: 6});
+
+m = function() {
+    emit("a", this.x);
+};
+
+r = function(k, v) {
+    return Array.sum(v);
+};
+
+out = db.mr_sort_out;
+assert.commandWorked(t.mapReduce(m, r, out.getName()));
+assert.eq([{_id: "a", value: 55}], out.find().toArray(), "A1");
+out.drop();
+
+assert.commandWorked(t.mapReduce(m, r, {out: "mr_sort_out", query: {x: {$lt: 3}}}));
+assert.eq([{_id: "a", value: 3}], out.find().toArray(), "A2");
+out.drop();
+
+assert.commandWorked(t.mapReduce(m, r, {out: "mr_sort_out", sort: {x: 1}, limit: 2}));
+assert.eq([{_id: "a", value: 3}], out.find().toArray(), "A3");
+out.drop();
+
+// Verify that specifying a sort with no limit succeeds.
+assert.commandWorked(t.mapReduce(m, r, {out: "mr_sort_out", sort: {x: 1}}));
+assert.eq([{_id: "a", value: 55}], out.find().toArray());
+assert(out.drop());