Restore support for nested have_xpath, etc. with blocks

lib/webrat/core/matchers/have_selector.rb

@@ -30,8 +30,8 @@ def query
     # HaveSelector:: A new have selector matcher.
     # ---
     # @api public
-    def have_selector(expected)
-      HaveSelector.new(expected)
+    def have_selector(expected, &block)
+      HaveSelector.new(expected, &block)
     end
     alias_method :match_selector, :have_selector
 

lib/webrat/core/matchers/have_tag.rb

@@ -49,8 +49,8 @@ def query
 
     end
 
-    def have_tag(name, attributes = {})
-      HaveTag.new([name, attributes])
+    def have_tag(name, attributes = {}, &block)
+      HaveTag.new([name, attributes], &block)
     end
     alias_method :match_tag, :have_tag
 

lib/webrat/core/matchers/have_xpath.rb

@@ -16,17 +16,31 @@ def matches?(stringlike)
       end
 
       def matches_rexml?(stringlike)
+        @query = query
+
         @document = rexml_document(stringlike)
-
-        query.all? do |q|
-          matched = REXML::XPath.match(@document, q)
-          matched.any? && (!block_given? || matched.all?(&@block))
-        end
+
+        matched = @query.map do |q|
+          if @document.is_a?(Array)
+            @document.map { |d| REXML::XPath.match(d, q) }
+          else
+            REXML::XPath.match(@document, q)
+          end
+        end.flatten.compact
+
+        matched.any? && (!@block || @block.call(matched))
       end
 
       def matches_nokogiri?(stringlike)
+        if Nokogiri::XML::NodeSet === stringlike
+          @query = query.map { |q| q.gsub(%r'//', './') }
+        else
+          @query = query
+        end
+
         @document = Webrat.nokogiri_document(stringlike)
-        @document.xpath(*query).any?
+        matched = @document.xpath(*@query)
+        matched.any? && (!@block || @block.call(matched))
       end
 
       def rexml_document(stringlike)
@@ -35,9 +49,10 @@ def rexml_document(stringlike)
         case stringlike
         when REXML::Document
           stringlike.root
-        when REXML::Node
+        when REXML::Node, Array
+          @query = query.map { |q| q.gsub(%r'//', './') }
           stringlike
-        when StringIO, String
+        else
           begin
             REXML::Document.new(stringlike.to_s).root
           rescue REXML::ParseException => e
@@ -76,8 +91,8 @@ def negative_failure_message
     # HaveXpath:: A new have xpath matcher.
     # ---
     # @api public
-    def have_xpath(expected)
-      HaveXpath.new(expected)
+    def have_xpath(expected, &block)
+      HaveXpath.new(expected, &block)
     end
     alias_method :match_xpath, :have_xpath
 

lib/webrat/core/nokogiri.rb

@@ -5,9 +5,11 @@ module Webrat
   def self.nokogiri_document(stringlike) #:nodoc:
     return stringlike.dom if stringlike.respond_to?(:dom)
 
-    if stringlike === Nokogiri::HTML::Document || stringlike === Nokogiri::XML::NodeSet
+    if Nokogiri::HTML::Document === stringlike
       stringlike
-    elsif stringlike === StringIO
+    elsif Nokogiri::XML::NodeSet === stringlike
+      stringlike
+    elsif StringIO === stringlike
       Nokogiri::HTML(stringlike.string)
     elsif stringlike.respond_to?(:body)
       Nokogiri::HTML(stringlike.body.to_s)

spec/api/matchers_spec.rb

@@ -8,10 +8,50 @@
     @body = <<-EOF
     <div id='main'>
       <div class='inner'>hello, world!</div>
+      <ul>
+        <li>First</li>
+        <li>Second</li>
+      </ul>
     </div>
     EOF
   end
 
+  describe "#have_xpath" do
+
+    it "should be able to match an XPATH" do
+      @body.should have_xpath("//div")
+    end
+
+    it "should not match a XPATH that does not exist" do
+      @body.should_not have_xpath("//p")
+    end
+
+    it "should be able to loop over all the matched elements" do
+      @body.should have_xpath("//div") { |node| node.first.name.should == "div" }
+    end
+
+    it "should not match of any of the matchers in the block fail" do
+      lambda {
+        @body.should have_xpath("//div") { |node| node.first.name.should == "p" }
+      }.should raise_error(Spec::Expectations::ExpectationNotMetError)
+    end
+
+    it "should be able to use #have_xpath in the block" do
+      @body.should have_xpath("//div[@id='main']") { |node| node.should have_xpath("./div[@class='inner']") }
+    end
+
+    it "should convert absolute paths to relative in the block" do
+      @body.should have_xpath("//div[@id='main']") { |node| node.should have_xpath("//div[@class='inner']") }
+    end
+
+    it "should not match any parent tags in the block" do
+      lambda {
+        @body.should have_xpath("//div[@class='inner']") { |node| node.should have_xpath("//div[@id='main']") }
+      }.should raise_error(Spec::Expectations::ExpectationNotMetError)
+    end
+
+  end
+
   describe "#have_selector" do
 
     it "should be able to match a CSS selector" do
@@ -23,12 +63,22 @@
     end
 
     it "should be able to loop over all the matched elements" do
-      @body.should have_selector("div") { |node| node.name.should == "div" }
+      @body.should have_selector("div") { |node| node.first.name.should == "div" }
     end
 
     it "should not match of any of the matchers in the block fail" do
       lambda {
-        @body.should_not have_selector("div") { |node| node.name.should == "p" }
+        @body.should have_selector("div") { |node| node.first.name.should == "p" }
+      }.should raise_error(Spec::Expectations::ExpectationNotMetError)
+    end
+
+    it "should be able to use #have_selector in the block" do
+      @body.should have_selector("#main") { |node| node.should have_selector(".inner") }
+    end
+
+    it "should not match any parent tags in the block" do
+      lambda {
+        @body.should have_selector(".inner") { |node| node.should have_selector("#main") }
       }.should raise_error(Spec::Expectations::ExpectationNotMetError)
     end
 
@@ -52,11 +102,38 @@
       @body.should have_tag("div", :class => "inner")
     end
 
+    it "should be able to loop over all the matched elements" do
+      @body.should have_tag("div") { |node| node.first.name.should == "div" }
+    end
+
+    it "should not match of any of the matchers in the block fail" do
+      lambda {
+        @body.should have_tag("div") { |node| node.first.name.should == "p" }
+      }.should raise_error(Spec::Expectations::ExpectationNotMetError)
+    end
+
+    it "should be able to use #have_tag in the block" do
+      @body.should have_tag("div", :id => "main") { |node| node.should have_tag("div", :class => "inner") }
+    end
+
+    it "should not match any parent tags in the block" do
+      lambda {
+        @body.should have_tag("div", :class => "inner") { |node| node.should have_tag("div", :id => "main") }
+      }.should raise_error(Spec::Expectations::ExpectationNotMetError)
+    end
+
+    it "should work with items that have multiple child nodes" do
+      @body.should have_tag("ul") { |n|
+        n.should have_tag("li", :content => "First")
+        n.should have_tag("li", :content => "Second")
+      }
+    end
+
   end
-   
+
   describe Webrat::Matchers::HasContent do
     include Webrat::Matchers
-    
+
     before(:each) do
       @body = <<-EOF
         <div id='main'>
@@ -66,26 +143,26 @@
     end
 
     describe "#matches?" do
-      it "should call element#include? when the argument is a string" do
+      it "should call element#contains? when the argument is a string" do
         @body.should contain("hello, world!")
       end
 
-      it "should call element#match when the argument is a regular expression" do
+      it "should call element#matches? when the argument is a regular expression" do
         @body.should contain(/hello, world/)
       end
     end
-      
+
     describe "#failure_message" do
       it "should include the content string" do
         hc = Webrat::Matchers::HasContent.new("hello, world!")
-        hc.matches?(@element)
+        hc.matches?(@body)
 
         hc.failure_message.should include("\"hello, world!\"")
       end
 
       it "should include the content regular expresson" do
         hc = Webrat::Matchers::HasContent.new(/hello,\sworld!/)
-        hc.matches?(@element)
+        hc.matches?(@body)
 
         hc.failure_message.should include("/hello,\\sworld!/")
       end