Migrated test block 27 to Dart 2.0.

tests/corelib/string_base_vm_test.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.
-// Dart test program for testing class 'StringBase' (currently VM specific).
-
-library string_base_test;
-
-import "package:expect/expect.dart";
-
-class StringBaseTest {
-  StringBaseTest() {}
-
-  toString() {
-    return "StringBase Tester";
-  }
-
-  static testInterpolation() {
-    var answer = 40 + 2;
-    var s = "The answer is $answer.";
-    Expect.equals("The answer is 42.", s);
-
-    int numBottles = 33;
-    String wall = "wall";
-    s = "${numBottles*3} bottles of beer on the $wall.";
-    Expect.equals("99 bottles of beer on the wall.", s);
-  }
-
-  static testCreation() {
-    String s = "Hello";
-    List<int> a = new List(s.length);
-    List<int> ga = new List();
-    bool exception_caught = false;
-    for (int i = 0; i < a.length; i++) {
-      a[i] = s.codeUnitAt(i);
-      ga.add(s.codeUnitAt(i));
-    }
-    try {
-      String s4 = new String.fromCharCodes([0.0]);
-    } on ArgumentError catch (ex) {
-      exception_caught = true;
-    } on TypeError catch (ex) {
-      exception_caught = true;
-    }
-    Expect.equals(true, exception_caught);
-    exception_caught = false;
-    try {
-      String s4 = new String.fromCharCodes([-1]);
-    } on ArgumentError catch (ex) {
-      exception_caught = true;
-    }
-    Expect.equals(true, exception_caught);
-  }
-
-  static testSubstring() {
-    String s = "Hello World";
-    Expect.equals("World", s.substring(6, s.length));
-    Expect.equals("", s.substring(8, 8));
-    bool exception_caught = false;
-    try {
-      s.substring(5, 12);
-    } on RangeError catch (ex) {
-      exception_caught = true;
-    }
-    Expect.equals(true, exception_caught);
-    exception_caught = false;
-    try {
-      s.substring(5, 4);
-    } on RangeError catch (ex) {
-      exception_caught = true;
-    }
-    Expect.equals(true, exception_caught);
-  }
-
-  static void testMain() {
-    testInterpolation();
-    testCreation();
-    testSubstring();
-  }
-}
-
-main() {
-  StringBaseTest.testMain();
-}