Conditions

- added test to assert that conditions can contain conditions within its value (eg 'a-and-b')

Tags
  - indented the if tag

Tests
  - added ruby-debug to the test_helper
  - indented some tests

lib/liquid/tags/if.rb

@@ -15,16 +15,15 @@ module Liquid
     SyntaxHelp = "Syntax Error in tag 'if' - Valid syntax: if [expression]"
     Syntax = /(#{QuotedFragment})\s*([=!<>a-z_]+)?\s*(#{QuotedFragment})?/
     ExpressionsAndOperators = /(?:\b(?:and|or)\b|(?:\s*(?!\b(?:and|or)\b)(?:#{QuotedFragment}|\S+)\s*)+)/
-    
-    def initialize(tag_name, markup, tokens)    
-    
+
+    def initialize(tag_name, markup, tokens)
       @blocks = []
-      
+
       push_block('if', markup)
-      
-      super      
+
+      super
     end
-    
+
     def unknown_tag(tag, markup, tokens)
       if ['elsif', 'else'].include?(tag)
         push_block(tag, markup)
@@ -32,49 +31,49 @@ module Liquid
         super
       end
     end
-    
+
     def render(context)
       context.stack do
         @blocks.each do |block|
-          if block.evaluate(context)            
-            return render_all(block.attachment, context)            
+          if block.evaluate(context)
+            return render_all(block.attachment, context)
           end
-        end 
+        end
         ''
       end
     end
-    
-    private
-    
-    def push_block(tag, markup)            
-      block = if tag == 'else'
-        ElseCondition.new
-      else        
-        
-        expressions = markup.scan(ExpressionsAndOperators).reverse
-        raise(SyntaxError, SyntaxHelp) unless expressions.shift =~ Syntax 
 
-        condition = Condition.new($1, $2, $3)               
-        
-        while not expressions.empty?
-          operator = expressions.shift 
-          
-          raise(SyntaxError, SyntaxHelp) unless expressions.shift.to_s =~ Syntax    
-          
-          new_condition = Condition.new($1, $2, $3)
-          new_condition.send(operator.to_sym, condition)     
-          condition = new_condition          
-        end                        
-                  
-        condition
+    private
+
+      def push_block(tag, markup)
+        block = if tag == 'else'
+          ElseCondition.new
+        else
+
+          expressions = markup.scan(ExpressionsAndOperators).reverse
+          raise(SyntaxError, SyntaxHelp) unless expressions.shift =~ Syntax
+
+          condition = Condition.new($1, $2, $3)
+
+          while not expressions.empty?
+            operator = expressions.shift
+
+            raise(SyntaxError, SyntaxHelp) unless expressions.shift.to_s =~ Syntax
+
+            new_condition = Condition.new($1, $2, $3)
+            new_condition.send(operator.to_sym, condition)
+            condition = new_condition
+          end
+
+          condition
+        end
+
+        @blocks.push(block)
+        @nodelist = block.attach(Array.new)
       end
-            
-      @blocks.push(block)      
-      @nodelist = block.attach(Array.new) 
-    end
-    
-    
+
+
   end
 
   Template.register_tag('if', If)
-end
+end

test/lib/liquid/condition_test.rb

@@ -48,16 +48,14 @@ class ConditionTest < Test::Unit::TestCase
     @context = Liquid::Context.new
     @context['array'] = [1,2,3,4,5]
 
-    assert_evalutes_false "array", 'contains', '0'
-    assert_evalutes_true "array", 'contains', '1'
-    assert_evalutes_true "array", 'contains', '2'
-    assert_evalutes_true "array", 'contains', '3'
-    assert_evalutes_true "array", 'contains', '4'
-    assert_evalutes_true "array", 'contains', '5'
-    assert_evalutes_false "array", 'contains', '6'
-
-    assert_evalutes_false "array", 'contains', '"1"'
-
+    assert_evalutes_false "array",  'contains', '0'
+    assert_evalutes_true "array",   'contains', '1'
+    assert_evalutes_true "array",   'contains', '2'
+    assert_evalutes_true "array",   'contains', '3'
+    assert_evalutes_true "array",   'contains', '4'
+    assert_evalutes_true "array",   'contains', '5'
+    assert_evalutes_false "array",  'contains', '6'
+    assert_evalutes_false "array",  'contains', '"1"'
   end
 
   def test_contains_returns_false_for_nil_operands
@@ -94,17 +92,23 @@ class ConditionTest < Test::Unit::TestCase
     assert_equal false, condition.evaluate
   end
 
-
   def test_should_allow_custom_proc_operator
     Condition.operators['starts_with'] = Proc.new { |cond, left, right| left =~ %r{^#{right}} }
 
-    assert_evalutes_true "'bob'", 'starts_with', "'b'"
-    assert_evalutes_false "'bob'", 'starts_with', "'o'"
+    assert_evalutes_true "'bob'",   'starts_with', "'b'"
+    assert_evalutes_false "'bob'",  'starts_with', "'o'"
 
     ensure
       Condition.operators.delete 'starts_with'
   end
 
+  def test_left_or_right_may_contain_operators
+    @context = Liquid::Context.new
+    @context['one'] = @context['another'] = "gnomeslab-and-or-liquid"
+
+    assert_evalutes_true "one", '==', "another"
+  end
+
   private
     def assert_evalutes_true(left, op, right)
       assert Condition.new(left, op, right).evaluate(@context || Liquid::Context.new),

test/lib/liquid/tags/if_else_test.rb

@@ -150,4 +150,10 @@ class IfElseTest < Test::Unit::TestCase
   ensure
     Condition.operators.delete 'contains'
   end
+
+  # def test_operators_are_ignored_unless_isolated
+  #   Condition.operators['contains'] = :[]
+  # 
+  #   assert_template_result('yes', %({% if 'gnomeslab' == 'gnomeslab' %}yes{% endif %}))
+  # end
 end # IfElseTest

test/test_helper.rb

@@ -6,6 +6,7 @@ require 'test/unit'
 require 'test/unit/assertions'
 require 'caller'
 require 'breakpoint'
+require 'ruby-debug'
 require File.join File.dirname(__FILE__), '..', 'lib', 'liquid'