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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Pagination::OffsetHeaderBuilder, type: :controller do
controller(ActionController::Base) do
def index
relation = Project.where(archived: params[:archived]).page(params[:page]).order(:id).per(1)
params_for_pagination = { archived: params[:archived], page: params[:page] }
Gitlab::Pagination::OffsetHeaderBuilder.new(
request_context: self,
per_page: relation.limit_value,
page: relation.current_page,
next_page: relation.next_page,
prev_page: relation.prev_page,
params: params_for_pagination
).execute(exclude_total_headers: true, data_without_counts: true)
render json: relation.map(&:id)
end
end
let_it_be(:projects) { create_list(:project, 2, archived: true).sort_by(&:id) }
describe 'pagination' do
it 'returns correct result for the first page' do
get :index, params: { page: 1, archived: true }
expect(json_response).to eq([projects.first.id])
end
it 'returns correct result for the second page' do
get :index, params: { page: 2, archived: true }
expect(json_response).to eq([projects.last.id])
end
end
describe 'pagination heders' do
it 'adds next page header' do
get :index, params: { page: 1, archived: true }
expect(response.headers['X-Next-Page']).to eq('2')
end
it 'adds only the specified params to the lnk' do
get :index, params: { page: 1, archived: true, some_param: '1' }
expect(response.headers['Link']).not_to include('some_param')
end
end
end
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