Migrated test block 27 to Dart 2.0.

tests/corelib/string_from_list_test.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.
-
-import "package:expect/expect.dart";
-
-void main() {
-  Expect.equals("", new String.fromCharCodes(new List(0)));
-  Expect.equals("", new String.fromCharCodes([]));
-  Expect.equals("", new String.fromCharCodes(const []));
-  Expect.equals("AB", new String.fromCharCodes([65, 66]));
-  Expect.equals("AB", new String.fromCharCodes(const [65, 66]));
-  Expect.equals("Ærø", new String.fromCharCodes(const [0xc6, 0x72, 0xf8]));
-  Expect.equals("\u{1234}", new String.fromCharCodes([0x1234]));
-  Expect.equals("\u{12345}*", new String.fromCharCodes([0x12345, 42]));
-  Expect.equals("", new String.fromCharCodes(new List()));
-  {
-    var a = new List();
-    a.add(65);
-    a.add(66);
-    Expect.equals("AB", new String.fromCharCodes(a));
-  }
-
-  // Long list (bug 6919).
-  for (int len in [499, 500, 501, 999, 100000]) {
-    List<int> list = new List(len);
-    for (int i = 0; i < len; i++) {
-      list[i] = 65 + (i % 26);
-    }
-    for (int i = len - 9; i < len; i++) {
-      list[i] = 48 + (len - i);
-    }
-    // We should not throw a stack overflow here.
-    String long = new String.fromCharCodes(list);
-    // Minimal sanity checking on the string.
-    Expect.isTrue(long.startsWith('ABCDE'));
-    Expect.isTrue(long.endsWith('987654321'));
-    int middle = len ~/ 2;
-    middle -= middle % 26;
-    Expect.equals('XYZABC', long.substring(middle - 3, middle + 3));
-    Expect.equals(len, long.length);
-  }
-
-  // Should work with iterables and non-default-lists (http://dartbug.com/8922)
-  Expect.equals("CBA", new String.fromCharCodes([65, 66, 67].reversed));
-  Expect.equals(
-      "BCD", new String.fromCharCodes([65, 66, 67].map((x) => x + 1)));
-  Expect.equals(
-      "AC", new String.fromCharCodes([0x41, 0x42, 0x43].where((x) => x.isOdd)));
-  Expect.equals(
-      "CE",
-      new String.fromCharCodes(
-          [0x41, 0x42, 0x43].where((x) => x.isOdd).map((x) => x + 2)));
-  Expect.equals(
-      "ABC", new String.fromCharCodes(new Iterable.generate(3, (x) => 65 + x)));
-  Expect.equals("ABC", new String.fromCharCodes("ABC".codeUnits));
-  Expect.equals(
-      "BCD", new String.fromCharCodes("ABC".codeUnits.map((x) => x + 1)));
-  Expect.equals("BCD", new String.fromCharCodes("ABC".runes.map((x) => x + 1)));
-
-  var nonBmpCharCodes = [0, 0xD812, 0xDC34, 0x14834, 0xDC34, 0xD812];
-  var nonBmp = new String.fromCharCodes(nonBmpCharCodes);
-  Expect.equals(7, nonBmp.length);
-  Expect.equals(0, nonBmp.codeUnitAt(0));
-  Expect.equals(0xD812, nonBmp.codeUnitAt(1)); // Separated surrogate pair
-  Expect.equals(0xDC34, nonBmp.codeUnitAt(2));
-  Expect.equals(0xD812, nonBmp.codeUnitAt(3)); // Single non-BMP code point.
-  Expect.equals(0xDC34, nonBmp.codeUnitAt(4));
-  Expect.equals(0xDC34, nonBmp.codeUnitAt(5)); // Unmatched surrogate.
-  Expect.equals(0xD812, nonBmp.codeUnitAt(6)); // Unmatched surrogate.
-
-  var reversedNonBmp = new String.fromCharCodes(nonBmpCharCodes.reversed);
-  Expect.equals(7, reversedNonBmp.length);
-  Expect.equals(0, reversedNonBmp.codeUnitAt(6));
-  Expect.equals(0xD812, reversedNonBmp.codeUnitAt(5));
-  Expect.equals(0xDC34, reversedNonBmp.codeUnitAt(4));
-  Expect.equals(0xDC34, reversedNonBmp.codeUnitAt(3));
-  Expect.equals(0xD812, reversedNonBmp.codeUnitAt(2));
-  Expect.equals(0xDC34, reversedNonBmp.codeUnitAt(1));
-  Expect.equals(0xD812, reversedNonBmp.codeUnitAt(0));
-
-  Expect.equals(nonBmp, new String.fromCharCodes(nonBmp.codeUnits));
-  Expect.equals(nonBmp, new String.fromCharCodes(nonBmp.runes));
-}