Added XML::Attribute#==

Overwriting this method makes it easier to check if a given namespace
equals the default XML (and soon HTML) namespace.

lib/oga/xml/namespace.rb

@@ -37,6 +37,14 @@ module Oga
       def inspect
         return "Namespace(name: #{name.inspect} uri: #{uri.inspect})"
       end
+
+      ##
+      # @param [Oga::XML::Namespace] other
+      # @return [TrueClass|FalseClass]
+      #
+      def ==(other)
+        return other.is_a?(self.class) && name == other.name && uri == other.uri
+      end
     end # Namespace
   end # XML
 end # Oga

spec/oga/xml/namespace_spec.rb

@@ -20,4 +20,42 @@ describe Oga::XML::Namespace do
       ns.inspect.should == 'Namespace(name: "x" uri: "y")'
     end
   end
+
+  describe '#==' do
+    describe 'when comparing with an object that is not a Namespace' do
+      ns = described_class.new(:name => 'a')
+
+      ns.should_not == 10
+    end
+
+    describe 'when comparing two Namespace instances' do
+      it 'returns true if both namespace names are equal' do
+        ns1 = described_class.new(:name => 'a')
+        ns2 = described_class.new(:name => 'a')
+
+        ns1.should == ns2
+      end
+
+      it 'returns true if both namespace names and URIs are equal' do
+        ns1 = described_class.new(:name => 'a', :uri => 'foo')
+        ns2 = described_class.new(:name => 'a', :uri => 'foo')
+
+        ns1.should == ns2
+      end
+
+      it 'returns false if two namespace names are not equal' do
+        ns1 = described_class.new(:name => 'a')
+        ns2 = described_class.new(:name => 'b')
+
+        ns1.should_not == ns2
+      end
+
+      it 'retrns false if two namespace URIs are not equal' do
+        ns1 = described_class.new(:name => 'a', :uri => 'foo')
+        ns2 = described_class.new(:name => 'a', :uri => 'bar')
+
+        ns1.should_not == ns2
+      end
+    end
+  end
 end