Tell the user which file is missing when config/database.yml was not found

Since cc03675d30b58e28f585720dad14e947a57ff5b the error message became like
"Could not load database configuration. No such file -"
which doesn't really tell what's actually missing.

1 files changed, 9 insertions, 0 deletions

diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index db2106aed3..f8b4ee30d8 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -980,6 +980,15 @@ module ApplicationTests
       assert_kind_of Hash, Rails.application.config.database_configuration
     end
 
+    test 'raises with proper error message if no database configuration found' do
+      FileUtils.rm("#{app_path}/config/database.yml")
+      require "#{app_path}/config/environment"
+      err = assert_raises RuntimeError do
+        Rails.application.config.database_configuration
+      end
+      assert_match 'config/database', err.message
+    end
+
     test 'config.action_mailer.show_previews defaults to true in development' do
       Rails.env = "development"
       require "#{app_path}/config/environment"