Changed implementation of For in such a way that it only depends on the existence of a each method. This allows drops to simply implement each for enumeration

test/drop_test.rb

@@ -59,6 +59,16 @@ class ProductDrop < Liquid::Drop
     def callmenot
       "protected"
     end
+end                   
+
+class EnumerableDrop < Liquid::Drop   
+  include Enumerable
+  
+  def each
+    yield 1
+    yield 2
+    yield 3
+  end
 end
 
 
@@ -132,6 +142,10 @@ class DropsTest < Test::Unit::TestCase
   
   def test_access_context_from_drop
     assert_equal '123', Liquid::Template.parse( '{%for a in dummy%}{{ context.loop_pos }}{% endfor %}'  ).render('context' => ContextDrop.new, 'dummy' => [1,2,3])            
+  end             
+  
+  def test_enumerable_drop         
+    assert_equal '123', Liquid::Template.parse( '{% for c in collection %}{{c}}{% endfor %}').render('collection' => EnumerableDrop.new)
   end
   
   

test/error_handling_test.rb

@@ -57,8 +57,23 @@ class ErrorHandlingTest < Test::Unit::TestCase
       
     end
     
+  end            
+  
+  def test_missing_endtag
+    
+    assert_nothing_raised do
+      
+      template = Liquid::Template.parse(' {% for a in b %} ... ')
+      assert_equal ' Liquid error: Unknown operator =! ', template.render
+      
+      assert_equal 1, template.errors.size
+      assert_equal Liquid::SyntaxError, template.errors.first.class
+      
+    end
+    
   end
   
+  
   def test_unrecognized_operator
     
     assert_nothing_raised do

test/include_tag_test.rb

@@ -96,9 +96,10 @@ class IncludeTagTest < Test::Unit::TestCase
     end                   
     
     Liquid::Template.file_system = infinite_file_system.new
-    
-    assert_match /-{552}Liquid error: stack level too deep$/, 
-      Template.parse("{% include 'loop' %}").render                 
+                   
+    assert_raise(Liquid::StackLevelError) do
+      Template.parse("{% include 'loop' %}").render!
+    end
     
   end
             

test/standard_tag_test.rb

@@ -104,11 +104,14 @@ HERE
     assert_template_result('12','{%for i in array limit:2 %}{{ i }}{%endfor%}',assigns)
     assert_template_result('1234','{%for i in array limit:4 %}{{ i }}{%endfor%}',assigns)
     assert_template_result('3456','{%for i in array limit:4 offset:2 %}{{ i }}{%endfor%}',assigns)
-    assert_template_result('3456','{%for i in array limit: 4 offset: 2 %}{{ i }}{%endfor%}',assigns)    
-    
+    assert_template_result('3456','{%for i in array limit: 4 offset: 2 %}{{ i }}{%endfor%}',assigns)        
+  end
+  
+  def test_dynamic_variable_limiting
+    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
     assigns['limit'] = 2
     assigns['offset'] = 2
-    assert_template_result('34','{%for i in array limit: limit offset: offset %}{{ i }}{%endfor%}',assigns)    
+    assert_template_result('34','{%for i in array limit: limit offset: offset %}{{ i }}{%endfor%}',assigns)        
   end
   
   def test_nested_for