require 'test_helper'

class LastTest < ActiveSupport::TestCase

  setup do
    10.times.each { |index| Record.create }
  end

  test 'should have 5 pages' do
    assert_equal 5, relation.total_pages
  end

  test 'current page should be 5' do
    assert_equal 5, relation.current_page
  end

  test 'first page should be 1' do
    assert_equal 1, relation.first_page
  end

  test 'should have previous page 4' do
    assert_equal 4, relation.previous_page
  end

  test 'should not have next page' do
    assert_nil relation.next_page
  end
  
  test 'last page shuold be 5' do
    assert_equal 5, relation.last_page
  end

  test 'should not be out of bounds' do
    assert !relation.out_of_bounds?
  end

  protected

  def relation
    @relation ||= Record.page(5, length: 2)
  end

end