Add all dart:html tests from the sdk to test/codegen.

test/codegen/lib/html/document_test.dart

+library DocumentTest;
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_individual_config.dart';
+import 'dart:html';
+
+main() {
+  useHtmlIndividualConfiguration();
+
+  var isElement = predicate((x) => x is Element, 'is an Element');
+  var isDivElement = predicate((x) => x is DivElement, 'is a DivElement');
+  var isAnchorElement =
+      predicate((x) => x is AnchorElement, 'is an AnchorElement');
+  var isUnknownElement =
+      predicate((x) => x is UnknownElement, 'is UnknownElement');
+
+  var inscrutable;
+
+  test('CreateElement', () {
+    // FIXME: nifty way crashes, do it boring way.
+    expect(new Element.tag('span'), isElement);
+    expect(new Element.tag('div'), isDivElement);
+    expect(new Element.tag('a'), isAnchorElement);
+    expect(new Element.tag('bad_name'), isUnknownElement);
+  });
+
+  group('document', () {
+    inscrutable = (x) => x;
+
+    test('Document.query', () {
+      Document doc = new DomParser().parseFromString(
+      '''<ResultSet>
+           <Row>A</Row>
+           <Row>B</Row>
+           <Row>C</Row>
+         </ResultSet>''','text/xml');
+
+      var rs = doc.query('ResultSet');
+      expect(rs, isNotNull);
+    });
+
+    test('CreateElement', () {
+      // FIXME: nifty way crashes, do it boring way.
+      expect(new Element.tag('span'), isElement);
+      expect(new Element.tag('div'), isDivElement);
+      expect(new Element.tag('a'), isAnchorElement);
+      expect(new Element.tag('bad_name'), isUnknownElement);
+    });
+
+    test('adoptNode', () {
+      var div = new Element.html('<div><div id="foo">bar</div></div>');
+      var doc = document.implementation.createHtmlDocument('');
+      expect(doc.adoptNode(div), div);
+      expect(div.ownerDocument, doc);
+      doc.body.nodes.add(div);
+      expect(doc.query('#foo').text, 'bar');
+    });
+
+    test('importNode', () {
+      var div = new Element.html('<div><div id="foo">bar</div></div>');
+      var doc = document.implementation.createHtmlDocument('');
+      var div2 = doc.importNode(div, true);
+      expect(div2, isNot(equals(div)));
+      expect(div2.ownerDocument, doc);
+      doc.body.nodes.add(div2);
+      expect(doc.query('#foo').text, 'bar');
+    });
+
+    test('typeTest1', () {
+      inscrutable = inscrutable(inscrutable);
+      var doc1 = document;
+      expect(doc1 is HtmlDocument, true);
+      expect(inscrutable(doc1) is HtmlDocument, true);
+      var doc2 = document.implementation.createHtmlDocument('');
+      expect(doc2 is HtmlDocument, true);
+      expect(inscrutable(doc2) is HtmlDocument, true);
+    });
+
+    test('typeTest2', () {
+      inscrutable = inscrutable(inscrutable);
+      // XML document.
+      var doc3 = document.implementation.createDocument(null, 'report', null);
+      expect(doc3 is HtmlDocument, false);
+      expect(inscrutable(doc3) is HtmlDocument, false);
+    });
+  });
+}