Fix have_xpath not matching negative expectation in the block.

[#182 state:resolved]

lib/webrat/core/matchers/have_xpath.rb

@@ -14,10 +14,12 @@ module Webrat
         @block ||= block
         matched = matches(stringlike)
 
+        @block.call(matched) if @block
+
         if @options[:count]
-          matched.size == @options[:count].to_i && (!@block || @block.call(matched))
+          matched.size == @options[:count].to_i
         else
-          matched.any? && (!@block || @block.call(matched))
+          matched.any?
         end
       end
 

spec/public/matchers/have_xpath_spec.rb

@@ -89,6 +89,12 @@ describe "have_xpath" do
     }.should raise_error(Spec::Expectations::ExpectationNotMetError)
   end
   
+  it "should match negative expectations in the block" do
+    @body.should have_xpath("//div") do |node|
+      node.should_not have_xpath("//div[@id='main']")
+    end
+  end
+
   it "should match descendants of the matched elements in the block" do
     @body.should have_xpath("//ul") do |node|
       node.should have_xpath("//a[@href='http://example.org']")