Ensure redis_url is set properly

Author: fbacall

config/application.rb

@@ -74,7 +74,11 @@ def self.merge_config(default_config, config, current_path = '')
 
   Config = OpenStruct.new(tess_config)
 
-  Config.redis_url = TeSS::Config.redis_url
+  Config.redis_url = if Rails.env.test?
+                       'redis://127.0.0.1:6379/0' # This URL required to talk to "fakeredis"
+                     else
+                       ENV.fetch('REDIS_URL') { 'redis://localhost:6379/1' }
+                     end
 
   config_file = File.join(Rails.root, 'config', 'ingestion.yml')
   Config.ingestion = YAML.safe_load(File.read(config_file)).deep_symbolize_keys! if File.exist?(config_file)

test/unit/config_test.rb

@@ -1,7 +1,6 @@
 require 'test_helper'
 
 class ConfigTest < ActiveSupport::TestCase
-
   test 'should load test secrets' do
     assert_equal 'test', Rails.application.secrets.oidc[:client_id]
   end
@@ -20,4 +19,7 @@ class ConfigTest < ActiveSupport::TestCase
     assert_equal 'TTI', TeSS::Config.site['title_short']
   end
 
+  test 'redis URL should be set' do
+    assert_equal 'redis://127.0.0.1:6379/0', TeSS::Config.redis_url
+  end
 end