Format all tests.

tests/lib_strong/html/events_test.dart

Index: tests/lib_strong/html/events_test.dart
diff --git a/tests/lib_strong/html/events_test.dart b/tests/lib_strong/html/events_test.dart
index 9d09bf6b97744a9f5ed14ca064d4d3e14e5f3f2c..4d9712c5d426262c4a2057c85a2865a3c1a04e01 100644
--- a/tests/lib_strong/html/events_test.dart
+++ b/tests/lib_strong/html/events_test.dart
@@ -76,7 +76,7 @@ main() {
     // The logic for html events which ensures identical handlers are added only
     // once is therefor muted by the wrapped handlers.
     // Hence, we get different behavior depending on the current zone.
-    if(Zone.current == Zone.ROOT) {
+    if (Zone.current == Zone.ROOT) {
       expect(invocationCounter, 1);
     } else {
       expect(invocationCounter, 2);