Update all tests

tests/language/cascade_test.dart

Index: tests/language/cascade_test.dart
diff --git a/tests/language/cascade_test.dart b/tests/language/cascade_test.dart
index 757ad22a9f557cecfc61357522a5323362511924..53d973f5d4b3a670719af21ebea3caba233caee6 100644
--- a/tests/language/cascade_test.dart
+++ b/tests/language/cascade_test.dart
@@ -65,7 +65,7 @@ main() {
    ..import()..check(4, 7)
    ..["swap"]()()()..check(7, 4);
   a.check(7,4);
-  a..(42);  /// 01: compile-time error
-  a..37;  /// 02: compile-time error
-  a.."foo";  /// 03: compile-time error
+  a..(42);  //# 01: compile-time error
+  a..37;  //# 02: compile-time error
+  a.."foo";  //# 03: compile-time error
 }