Feature: Researcher can't modify poll's structure
    As a Researcher
    I want to not be able to modify a poll's structure
        when a poll has results
    So that there is no chance to get mixed results from a poll

    Scenario: a poll with results
        Given I am logged in as "Researcher"
        And "poll" exists
        And "poll" has "simple.poll_result"
        When I visit the "Modificar estructura" page for "poll" poll
        Then I should see a message that says "No puede modificar"