test rename overhaul: step 5 - frog and leg tests

frog/tests/leg_only/src/NotTest.dart

-// Copyright (c) 2011, 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.
-
-void not1() {
-  var x = !true;
-  Expect.equals(false, x);
-}
-
-void not2() {
-  var x = true;
-  var y = !x;
-  Expect.equals(false, y);
-}
-
-void not3() {
-  var x = true;
-  var y = !x;
-  var z = !y;
-  Expect.equals(true, z);
-}
-
-void not4() {
-  var x = true;
-  if (!x) Expect.fail('unreachable');
-  Expect.equals(true, x);
-}
-
-void main() {
-  not1();
-  not2();
-  not3();
-  not4();
-}