Localize errors in Liquid

test/liquid/assign_test.rb

@@ -18,4 +18,10 @@ class AssignTest < Test::Unit::TestCase
                            '{% assign foo = values | split: "," %}.{{ foo[1] }}.',
                            'values' => "foo,bar,baz")
   end
+
+  def test_assign_syntax_error
+    assert_match_syntax_error(/assign/,
+                       '{% assign foo not values %}.',
+                       'values' => "foo,bar,baz")
+  end
 end # AssignTest

test/liquid/template_test.rb

@@ -146,6 +146,7 @@ class TemplateTest < Test::Unit::TestCase
 
   def test_sets_default_localization_in_document
     t = Template.new
+    t.parse('')
     assert_instance_of I18n, t.root.options[:locale]
   end
 

test/test_helper.rb

@@ -40,6 +40,13 @@ module Test
         assert_match expected, Template.parse(template).render(assigns)
       end
 
+      def assert_match_syntax_error(match, template, registers = {})
+        exception = assert_raise(Liquid::SyntaxError) {
+          Template.parse(template).render(assigns)
+        }
+        assert_match match, exception.message
+      end
+
       def with_error_mode(mode)
         old_mode = Liquid::Template.error_mode
         Liquid::Template.error_mode = mode