# encoding: utf-8

require 'spec_helper'

describe Hyperdrive::Middleware::Pagination do
  def app
    inner_app = ->(env) { [200, {}, [[env['hyperdrive.page'],env['hyperdrive.per_page'],env['hyperdrive.params'][:page],env['hyperdrive.params'][:per_page]].join(",")]] } 
    Hyperdrive::Middleware::Pagination.new(inner_app)
  end

  after do
    hyperdrive.send(:reset!)
  end
  
  it "sets default values for page and per_page and removes them from hyperdrive.params" do
    env = default_rack_env.merge('hyperdrive.params' => {})
    get '/', {}, env
    last_response.body.must_equal '1,20,,'
  end

  it "sets page to 1 if value is less than 1" do
    env = default_rack_env.merge('hyperdrive.params' => { page: '' })
    get '/', {}, env
    last_response.body.must_equal '1,20,,'
  end

  it "returns per_page value if supplied" do
    env = default_rack_env.merge('hyperdrive.params' => { per_page: 42 })
    get '/', {}, env
    last_response.body.must_equal '1,42,,'
  end

  it "uses configured per_page value if per_page is not supplied" do
    hyperdrive.config[:per_page] = 13
    env = default_rack_env.merge('hyperdrive.params' => {})
    get '/', {}, env
    last_response.body.must_equal '1,13,,'    
  end

  it "sets per_page to 20 if value is 0" do
    env = default_rack_env.merge('hyperdrive.params' => { per_page: '' })
    get '/', {}, env
    last_response.body.must_equal '1,20,,'
  end
end