test rename overhaul: step 8 - language tests

tests/language/src/FiboTest.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.
-// Dart test program calculating the Fibonacci sequence.
-
-class Helper {
-  static int fibonacci(int n) {
-    int a = 0, b = 1, i = 0;
-    while (i++ < n) {
-      a = a + b;
-      b = a - b;
-    }
-    return a;
-  }
-}
-
-class FiboTest {
-  static testMain() {
-    Expect.equals(0, Helper.fibonacci(0));
-    Expect.equals(1, Helper.fibonacci(1));
-    Expect.equals(1, Helper.fibonacci(2));
-    Expect.equals(2, Helper.fibonacci(3));
-    Expect.equals(3, Helper.fibonacci(4));
-    Expect.equals(5, Helper.fibonacci(5));
-    Expect.equals(102334155, Helper.fibonacci(40));
-  }
-}
-
-main() {
-  FiboTest.testMain();
-}