Add Module and Application interfaces

sky/tests/modules/application.sky

Index: sky/tests/modules/application.sky
diff --git a/sky/tests/lowlevel/create-document.sky b/sky/tests/modules/application.sky
similarity index 50%
copy from sky/tests/lowlevel/create-document.sky
copy to sky/tests/modules/application.sky
index cb4f7c3f0d8fbaf367dedbcd8d7cef7f9db7f45b..6fa8af1912882c77ad0446ace3bef21fc9c97c1c 100644
--- a/sky/tests/lowlevel/create-document.sky
+++ b/sky/tests/modules/application.sky
@@ -2,13 +2,12 @@
 <import src="../resources/chai.sky" />
 <import src="../resources/mocha.sky" />
 <script>
-describe('Document', function() {
+describe('Application', function() {
   it('should have a constructor', function() {
     var doc = new Document();
-    assert.isNotNull(doc);
-    assert.doesNotThrow(function() {
-      doc.registerElement('x-foo');
-    }, 'new document should have a registration context');
+    var app = new Application(doc, "http://www.example.com/app");
+    assert.equal(app.document, doc);
+    assert.equal(app.url, "http://www.example.com/app");
   });
 });
 </script>