Format all tests.

tests/language_strong/asyncstar_concat_test.dart

Index: tests/language_strong/asyncstar_concat_test.dart
diff --git a/tests/language_strong/asyncstar_concat_test.dart b/tests/language_strong/asyncstar_concat_test.dart
index aeb1361cd85fdcc35bf1fd466b161c2462befc4e..222e3cf6d6b4d038d364066e2df7364eccf08387 100644
--- a/tests/language_strong/asyncstar_concat_test.dart
+++ b/tests/language_strong/asyncstar_concat_test.dart
@@ -17,8 +17,8 @@ concat(a, b) async* {
 }
 
 test() async {
-  Expect.listEquals([1, 2, 3, 11, 12, 13],
-                    await concat(range(1, 4), range(11, 14)).toList());
+  Expect.listEquals(
+      [1, 2, 3, 11, 12, 13], await concat(range(1, 4), range(11, 14)).toList());
 }
 
 main() {
@@ -26,4 +26,4 @@ main() {
   test().then((_) {
     asyncEnd();
   });
-}
+}