XPath evaluation for name/namespace wildcards.

lib/oga/xpath/evaluator.rb

@@ -74,8 +74,8 @@ module Oga
           name_matches = xml_node.name == name || name == '*'
           ns_matches   = false
 
-          if ns and (xml_node.namespace == ns or ns == '*')
-            ns_matches = true
+          if ns
+            ns_matches = xml_node.namespace == ns || ns == '*'
 
           # If there's no namespace given but the name matches we'll also mark
           # the namespace as matching.

spec/oga/xpath/evaluator/wildcard_spec.rb

@@ -28,4 +28,41 @@ describe Oga::XPath::Evaluator do
       @set[2].namespace.should == 'ns1'
     end
   end
+
+  context 'namespace wildcards' do
+    before do
+      @set = @evaluator.evaluate('a/*:b')
+    end
+
+    example 'return the right amount of rows' do
+      @set.length.should == 2
+    end
+
+    example 'include the first <b> node' do
+      @set[0].name.should == 'b'
+    end
+
+    example 'include the second <b> node' do
+      @set[1].name.should == 'b'
+    end
+
+    example 'ensure the nodes are the individual <b> nodes' do
+      @set[0].should_not == @set[1]
+    end
+  end
+
+  context 'name wildcards' do
+    before do
+      @set = @evaluator.evaluate('a/ns1:*')
+    end
+
+    example 'return the right amount of rows' do
+      @set.length.should == 1
+    end
+
+    example 'include the correct <c> node' do
+      @set[0].name.should      == 'c'
+      @set[0].namespace.should == 'ns1'
+    end
+  end
 end