cached_metar_test.rb

require 'test_helper'

class CachedMetarTest < ActiveSupport::TestCase

  context 'self.metar' do
    should 'call get_metar when cache is empty' do
      Rails.cache.delete('cached_metar_test_icao')
      CurrentMetar::Metar.expects(:get_metar).with('test_icao').returns('test')
      assert_equal 'test', CachedMetar.metar('test_icao')
    end

    should 'return cached value without calling get_metar' do
      Rails.cache.write('cached_metar_test_icao', 'test', :expires_in => 5.minutes)
      CurrentMetar::Metar.expects(:get_metar).never
      assert_equal 'test', CachedMetar.metar('test_icao') 
    end
  end
end