Split classes test from html/element_test

tests/html/element_test.dart

Index: tests/html/element_test.dart
diff --git a/tests/html/element_test.dart b/tests/html/element_test.dart
index 96630dcd41d8c9f68bc3439289a1f5a4127b76dd..fbdd1e48de976c786f5999043df10352b6de3fe4 100644
--- a/tests/html/element_test.dart
+++ b/tests/html/element_test.dart
@@ -749,149 +749,4 @@ main() {
       Expect.isTrue(range[1] is InputElement);
     });
   });
-
-  group('classes', () {
-    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>[];
-      makeClassSet().forEach(classes.add);
-      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);
-    });
-  });
 }