Revert "Split classes test from html/element_test"

tests/html/element_classes_test.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#library('ElementTest');
-#import('../../lib/unittest/unittest.dart');
-#import('../../lib/unittest/html_config.dart');
-#import('dart:html');
-
-main() {
-  useHtmlConfiguration();
-
-  Element makeElement() => new Element.tag('div');
-
-  Element makeElementWithChildren() =>
-    new Element.html("<div><br/><img/><input/></div>");
-
-  Element makeElementWithClasses() =>
-    new Element.html('<div class="foo bar baz"></div>');
-
-  Set<String> makeClassSet() => makeElementWithClasses().classes;
-
-  Set<String> extractClasses(Element el) {
-    final match = new RegExp('class="([^"]+)"').firstMatch(el.outerHTML);
-    return new Set.from(match[1].split(' '));
-  }
-
-  test('affects the "class" attribute', () {
-    final el = makeElementWithClasses();
-    el.classes.add('qux');
-    Expect.setEquals(['foo', 'bar', 'baz', 'qux'], extractClasses(el));
-  });
-
-  test('is affected by the "class" attribute', () {
-    final el = makeElementWithClasses();
-    el.attributes['class'] = 'foo qux';
-    Expect.setEquals(['foo', 'qux'], el.classes);
-  });
-
-  test('classes=', () {
-    final el = makeElementWithClasses();
-    el.classes = ['foo', 'qux'];
-    Expect.setEquals(['foo', 'qux'], el.classes);
-    Expect.setEquals(['foo', 'qux'], extractClasses(el));
-  });
-
-  test('toString', () {
-    Expect.setEquals(['foo', 'bar', 'baz'],
-        makeClassSet().toString().split(' '));
-    Expect.equals('', makeElement().classes.toString());
-  });
-
-  test('forEach', () {
-    final classes = <String>[];
-    // TODO: Change to this when Issue 3484 is fixed.
-    //    makeClassSet().forEach(classes.add);
-    makeClassSet().forEach((c) => classes.add(c));
-    Expect.setEquals(['foo', 'bar', 'baz'], classes);
-  });
-
-  test('iterator', () {
-    final classes = <String>[];
-    for (var el in makeClassSet()) {
-      classes.add(el);
-    }
-    Expect.setEquals(['foo', 'bar', 'baz'], classes);
-  });
-
-  test('map', () {
-    Expect.setEquals(['FOO', 'BAR', 'BAZ'],
-        makeClassSet().map((c) => c.toUpperCase()));
-  });
-
-  test('filter', () {
-    Expect.setEquals(['bar', 'baz'],
-        makeClassSet().filter((c) => c.contains('a')));
-  });
-
-  test('every', () {
-    Expect.isTrue(makeClassSet().every((c) => c is String));
-    Expect.isFalse(
-        makeClassSet().every((c) => c.contains('a')));
-  });
-
-  test('some', () {
-    Expect.isTrue(
-        makeClassSet().some((c) => c.contains('a')));
-    Expect.isFalse(makeClassSet().some((c) => c is num));
-  });
-
-  test('isEmpty', () {
-    Expect.isFalse(makeClassSet().isEmpty());
-    Expect.isTrue(makeElement().classes.isEmpty());
-  });
-
-  test('length', () {
-    Expect.equals(3, makeClassSet().length);
-    Expect.equals(0, makeElement().classes.length);
-  });
-
-  test('contains', () {
-    Expect.isTrue(makeClassSet().contains('foo'));
-    Expect.isFalse(makeClassSet().contains('qux'));
-  });
-
-  test('add', () {
-    final classes = makeClassSet();
-    classes.add('qux');
-    Expect.setEquals(['foo', 'bar', 'baz', 'qux'], classes);
-
-    classes.add('qux');
-    final list = new List.from(classes);
-    list.sort((a, b) => a.compareTo(b));
-    Expect.listEquals(['bar', 'baz', 'foo', 'qux'], list,
-        "The class set shouldn't have duplicate elements.");
-  });
-
-  test('remove', () {
-    final classes = makeClassSet();
-    classes.remove('bar');
-    Expect.setEquals(['foo', 'baz'], classes);
-    classes.remove('qux');
-    Expect.setEquals(['foo', 'baz'], classes);
-  });
-
-  test('addAll', () {
-    final classes = makeClassSet();
-    classes.addAll(['bar', 'qux', 'bip']);
-    Expect.setEquals(['foo', 'bar', 'baz', 'qux', 'bip'], classes);
-  });
-
-  test('removeAll', () {
-    final classes = makeClassSet();
-    classes.removeAll(['bar', 'baz', 'qux']);
-    Expect.setEquals(['foo'], classes);
-  });
-
-  test('isSubsetOf', () {
-    final classes = makeClassSet();
-    Expect.isTrue(classes.isSubsetOf(['foo', 'bar', 'baz']));
-    Expect.isTrue(classes.isSubsetOf(['foo', 'bar', 'baz', 'qux']));
-    Expect.isFalse(classes.isSubsetOf(['foo', 'bar', 'qux']));
-  });
-
-  test('containsAll', () {
-    final classes = makeClassSet();
-    Expect.isTrue(classes.containsAll(['foo', 'baz']));
-    Expect.isFalse(classes.containsAll(['foo', 'qux']));
-  });
-
-  test('intersection', () {
-    final classes = makeClassSet();
-    Expect.setEquals(['foo', 'baz'],
-        classes.intersection(['foo', 'qux', 'baz']));
-  });
-
-  test('clear', () {
-    final classes = makeClassSet();
-    classes.clear();
-    Expect.setEquals([], classes);
-  });
-}