Copy lib/dom tests that use dart:html to lib/html.

tests/dom/htmlelement_test.dart

-#library('ElementTest');
-#import('../../lib/unittest/unittest.dart');
-#import('../../lib/unittest/html_config.dart');
-#import('dart:html');
-
-main() {
-  useHtmlConfiguration();
-  test('InnerHTML', () {
-    Element element = new Element.tag('div');
-    element.id = 'test';
-    element.innerHTML = 'Hello World';
-    document.body.nodes.add(element);
-
-    element = document.query('#test');
-    Expect.stringEquals('Hello World', element.innerHTML);
-    element.remove();
-  });
-  test('HTMLTable', () {
-    Element table = new Element.tag('table');
-
-    TableRowElement row = new Element.tag('tr');
-    table.nodes.add(row);
-
-    row.nodes.add(new Element.tag('td'));
-    row.nodes.add(new Element.tag('td'));
-
-    Expect.equals(2, row.cells.length);
-
-    TableRowElement headerRow = table.rows.item(0);
-    Expect.equals(2, headerRow.cells.length);
-  });
-  test('dataAttributes', () {
-    Element div = new Element.tag('div');
-
-    Expect.isTrue(div.dataAttributes.isEmpty());
-    Expect.equals(null, div.dataAttributes['foo']);
-    Expect.isTrue(div.dataAttributes.isEmpty());
-
-    div.dataAttributes['foo'] = 'foo-value';
-    Expect.equals('foo-value', div.dataAttributes['foo']);
-    Expect.isFalse(div.dataAttributes.isEmpty());
-
-    Expect.isTrue(div.dataAttributes.containsValue('foo-value'));
-    Expect.isFalse(div.dataAttributes.containsValue('bar-value'));
-    Expect.isTrue(div.dataAttributes.containsKey('foo'));
-    Expect.isFalse(div.dataAttributes.containsKey('bar'));
-
-    bool hasBeenInvoked;
-    String f() {
-      hasBeenInvoked = true;
-      return 'bar-value';
-    }
-
-    hasBeenInvoked = false;
-    Expect.equals('bar-value', div.dataAttributes.putIfAbsent('bar', f));
-    Expect.isTrue(hasBeenInvoked);
-
-    hasBeenInvoked = false;
-    Expect.equals('bar-value', div.dataAttributes.putIfAbsent('bar', f));
-    Expect.isFalse(hasBeenInvoked);
-
-    final keys = <String> [];
-    final values = <String> [];
-    div.dataAttributes.forEach(void f(String key, String value) {
-        keys.add(key);
-        values.add(value);
-    });
-    Expect.setEquals(const <String> ['foo', 'bar'], keys);
-    Expect.setEquals(const <String> ['foo-value', 'bar-value'], values);
-
-    Expect.setEquals(const <String> ['foo', 'bar'],
-                     new List<String>.from(div.dataAttributes.getKeys()));
-    Expect.setEquals(const <String> ['foo-value', 'bar-value'],
-                     new List<String>.from(div.dataAttributes.getValues()));
-
-    Expect.equals(2, div.dataAttributes.length);
-    Expect.isFalse(div.dataAttributes.isEmpty());
-
-    Expect.isNull(div.dataAttributes.remove('qux'));
-    Expect.equals(2, div.dataAttributes.length);
-    Expect.isFalse(div.dataAttributes.isEmpty());
-
-    Expect.equals('foo-value', div.dataAttributes.remove('foo'));
-    Expect.equals(1, div.dataAttributes.length);
-    Expect.isFalse(div.dataAttributes.isEmpty());
-
-    div.dataAttributes.clear();
-    Expect.equals(0, div.dataAttributes.length);
-    Expect.isTrue(div.dataAttributes.isEmpty());
-  });
-}