added tests for the cdata and comments

spec/spec_text_node.js

@@ -1,13 +1,60 @@
 with(require('./helpers')) {
 
 describe('Text node', function() {
-  it('knows its type is "text"', function() {
-    var doc = libxml.parseXmlString(
+  var doc = null;
+
+  beforeEach(function() {
+    doc = libxml.parseXmlString(
       '<?xml version="1.0"?>\
       <root>child</root>\
     ');
+  });
+
+  it('knows its type is "text"', function() {
     assertEqual('text', doc.child().type());
   });
+
+  it('knows its name is "text"', function() {
+    assertEqual('text', doc.child().name());
+  });
+});
+
+describe('Comment node', function() {
+  var doc = null;
+
+  beforeEach(function() {
+    doc = libxml.parseXmlString(
+      '<?xml version="1.0"?>\
+      <root><!-- comment --></root>\
+    ');
+  });
+
+  it('knows its type is "comment"', function() {
+    assertEqual('comment', doc.child().type());
+  });
+
+  it('knows its name is "comment"', function() {
+    assertEqual('comment', doc.child().name());
+  });
+});
+
+describe('CDATA node', function() {
+  var doc = null;
+
+  beforeEach(function() {
+    doc = libxml.parseXmlString(
+      '<?xml version="1.0"?>\
+      <root><![CDATA[cdata text]]></root>\
+    ');
+  });
+
+  it('knows its type is "cdata"', function() {
+    assertEqual('cdata', doc.child().type());
+  });
+
+  it('has no name', function() {
+    assertEqual(undefined, doc.child().name());
+  });
 });
 
 }