MDEV-27036: unittest JSON object member name collision

1 files changed, 18 insertions, 0 deletions

diff --git a/unittest/sql/my_json_writer-t.cc b/unittest/sql/my_json_writer-t.cc
index 6398a589c33..a585c17c75f 100644
--- a/unittest/sql/my_json_writer-t.cc
+++ b/unittest/sql/my_json_writer-t.cc
@@ -119,7 +119,25 @@ int main(int args, char **argv)
     ok(w.invalid_json, "JSON array end of object");
   }
 
+  {
+    Json_writer w;
+    w.start_object();
+    w.add_member("name").add_ll(1);
+    w.add_member("name").add_ll(2);
+    w.end_object();
+    ok(w.invalid_json, "JSON object member name collision");
+  }
 
+  {
+    Json_writer w;
+    w.start_object();
+    w.add_member("name").add_ll(1);
+    w.start_object();
+    w.add_member("name").add_ll(2);
+    w.end_object();
+    w.end_object();
+    ok(!w.invalid_json, "Valid JSON: nested object member name is the same");
+  }
 
   diag("Done");