Redmine

# Rack 3.1.14 or later limits query parameters to 4096 by default, which can

# prevent saving workflows with many statuses.

# Setting RACK_QUERY_PARSER_PARAMS_LIMIT to 65536 allows handling up to

# approximately 100 statuses.

#

# See also:

# - https://www.redmine.org/issues/42875

# - https://github.com/rack/rack/blob/v3.1.16/README.md#configuration

ENV['RACK_QUERY_PARSER_PARAMS_LIMIT'] ||= '65536'

  def test_post_edit_with_large_number_of_statuses

    # This test ensures that workflows with many statuses can be saved.

    # Without setting `ENV['RACK_QUERY_PARSER_PARAMS_LIMIT']`, this raises

    # ActionController::BadRequest exception due to exceeding the default

    # query parameter limit of 4096.

    WorkflowTransition.delete_all

    num_statuses = 40

    transitions_data = {}

    # Allowed statuses for a new issue (status_id = 0)

    transitions_data['0'] = {}

    (1..num_statuses).each do |status_id|

      transitions_data['0'][status_id.to_s] = {'always' => '1'}

    end

    # Status transitions between statuses

    (1..num_statuses).each do |status_id_from| # rubocop:disable RuboCopStyle/CombinableLoops

      transitions_data[status_id_from.to_s] = {}

      (1..num_statuses).each do |status_id_to|

        # skip self-transitions

        next if status_id_from == status_id_to

        transitions_data[status_id_from.to_s][status_id_to.to_s] = {

          'always' => '1', 'author' => '1', 'assignee' => '1'

        }

      end

    end

    assert_nothing_raised do

      patch :update, :params => {

        :role_id => 2,

        :tracker_id => 1,

        :transitions => transitions_data

      }

    end

    assert_response :found

  end