test rename overhaul: step 5 - frog and leg tests

frog/tests/leg_only/src/SwitchTest.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-switcher(val) {
-  var x = 0;
-  switch (val) {
-  case 1:
-    x = 100;
-    break;
-  case 2:
-    x = 200;
-    break;
-  case 3:
-    x = 300;
-    break;
-  default:
-    return 400;
-    break; // Intentional dead code (regression test for crash).
-  }
-  return x;
-}
-
-main() {
-  Expect.equals(100, switcher(1));
-  Expect.equals(200, switcher(2));
-  Expect.equals(300, switcher(3));
-  Expect.equals(400, switcher(4));
-}