Format all tests.

tests/lib_strong/html/element_add_test.dart

Index: tests/lib_strong/html/element_add_test.dart
diff --git a/tests/lib_strong/html/element_add_test.dart b/tests/lib_strong/html/element_add_test.dart
index fc346d2fe8181509756ac39cbf56ccd8bc183ced..85dd6542ae55a2a4e4e62737327e1a926583873a 100644
--- a/tests/lib_strong/html/element_add_test.dart
+++ b/tests/lib_strong/html/element_add_test.dart
@@ -13,10 +13,9 @@ main() {
   var isDivElement = predicate((x) => x is DivElement, 'is a DivElement');
   var isText = predicate((x) => x is Text, 'is a Text');
 
-  void expectNoSuchMethod(void fn()) =>
-    expect(fn, throwsNoSuchMethodError);
+  void expectNoSuchMethod(void fn()) => expect(fn, throwsNoSuchMethodError);
 
-   group('append', () {
+  group('append', () {
     test('htmlelement', () {
       var el = new DivElement();
       el.append(new SpanElement());