added missing_translations_raise_handler

lib/globalize/i18n/missing_translations_raise_handler.rb

@@ -0,0 +1,28 @@
+# A simple exception handler that behaves like the default exception handler
+# but also raises on missing translations.
+#
+# Useful for identifying missing translations during testing.
+# 
+# E.g. 
+#
+#   require 'globalize/i18n/missing_translations_raise_handler
+#   I18n.exception_handler = :missing_translations_raise_handler
+
+module I18n
+  class << self
+    def missing_translations_raise_handler(exception, locale, key, options)
+      raise exception
+    end
+  end
+
+#  self.exception_handler = :missing_translations_raise_handler
+end
+
+I18n.exception_handler = :missing_translations_raise_handler
+
+ActionView::Helpers::TranslationHelper.module_eval do
+  def translate(key, options = {})
+    I18n.translate(key, options)
+  end
+  alias :t :translate
+end