1 files changed, 30 insertions, 0 deletions
diff --git a/jstests/core/views/dbref_projection.js b/jstests/core/views/dbref_projection.js
new file mode 100644
index 00000000000..963a3cc185e
--- /dev/null
+++ b/jstests/core/views/dbref_projection.js
@@ -0,0 +1,30 @@
+/**
+ * Test projecting DBRef fields ($ref, $id, $db) in views.
+ *
+ * Legacy find() queries do not support views, so must use the find() command.
+ * DBRef fields are not supported in agg pre 4.4.
+ * @tags: [requires_find_command, requires_fcv_44]
+ */
+(function() {
+"use strict";
+
+const viewsDB = db.getSiblingDB("views_dbref_projection");
+assert.commandWorked(viewsDB.dropDatabase());
+
+assert.commandWorked(
+    viewsDB.baseColl.insert({_id: 0, link: new DBRef("otherColl", "someId", viewsDB.getName())}));
+
+assert.commandWorked(viewsDB.runCommand({create: "view", viewOn: "baseColl"}));
+
+// Check that the view and base collection return the same thing.
+function checkViewAndBaseCollection(projection, expectedResult) {
+    const baseRes = viewsDB.baseColl.find({}, projection).toArray();
+    const viewRes = viewsDB.view.find({}, projection).toArray();
+    assert.eq(baseRes, viewRes);
+    assert.eq(expectedResult, baseRes);
+}
+
+checkViewAndBaseCollection({"link.$ref": 1}, [{_id: 0, link: {$ref: "otherColl"}}]);
+checkViewAndBaseCollection({"link.$db": 1}, [{_id: 0, link: {$db: viewsDB.getName()}}]);
+checkViewAndBaseCollection({"link.$id": 1}, [{_id: 0, link: {$id: "someId"}}]);
+}());