fix query_test

Author: juno-nishizaki

test/unit/query_test.rb

@@ -2845,7 +2845,7 @@ def setup_assigned_to_role
     @manager_role = Role.find_by_name('Manager')
     @developer_role = Role.find_by_name('Developer')
 
-    @project = Project.generate!
+    @project = Project.generate!(is_public: true)
     @manager = User.generate!
     @developer = User.generate!
     @boss = User.generate!