Migrated test block 29 to Dart 2.0

tests/corelib_strong/string_trimlr_test.dart

-// Copyright (c) 2013, 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";
-
-// Characters with Whitespace property (Unicode 6.3).
-// 0009..000D    ; White_Space # Cc       <control-0009>..<control-000D>
-// 0020          ; White_Space # Zs       SPACE
-// 0085          ; White_Space # Cc       <control-0085>
-// 00A0          ; White_Space # Zs       NO-BREAK SPACE
-// 1680          ; White_Space # Zs       OGHAM SPACE MARK
-// 2000..200A    ; White_Space # Zs       EN QUAD..HAIR SPACE
-// 2028          ; White_Space # Zl       LINE SEPARATOR
-// 2029          ; White_Space # Zp       PARAGRAPH SEPARATOR
-// 202F          ; White_Space # Zs       NARROW NO-BREAK SPACE
-// 205F          ; White_Space # Zs       MEDIUM MATHEMATICAL SPACE
-// 3000          ; White_Space # Zs       IDEOGRAPHIC SPACE
-// And BOM:
-// FEFF          ; Byte order mark.
-const WHITESPACE = const [
-  0x09,
-  0x0A,
-  0x0B,
-  0x0C,
-  0x0D,
-  0x20,
-  0x85,
-  0xA0,
-  0x1680,
-  0x2000,
-  0x2001,
-  0x2002,
-  0x2003,
-  0x2004,
-  0x2005,
-  0x2006,
-  0x2007,
-  0x2008,
-  0x2009,
-  0x200A,
-  0x2028,
-  0x2029,
-  0x202F,
-  0x205F,
-  0x3000,
-  0xFEFF,
-];
-
-main() {
-  // Test the whitespace in different positions.
-  test(ws) {
-    // trimLeft
-    Expect.equals("", ws.trimLeft(), "K1");
-    Expect.equals("", (ws + ws).trimLeft(), "L2");
-    Expect.equals("a" + ws, ("a" + ws).trimLeft(), "L3");
-    Expect.equals("a", (ws + "a").trimLeft(), "L4");
-    Expect.equals("a" + ws + ws, (ws + ws + "a" + ws + ws).trimLeft(), "L5");
-    Expect.equals("a" + ws + "a", (ws + ws + "a" + ws + "a").trimLeft(), "L6");
-    var untrimmable = "a" + ws + "a";
-    Expect.identical(untrimmable, untrimmable.trimLeft(), "L7");
-    // trimRight
-    Expect.equals("", ws.trimRight(), "R1");
-    Expect.equals("", (ws + ws).trimRight(), "R2");
-    Expect.equals("a", ("a" + ws).trimRight(), "R3");
-    Expect.equals(ws + "a", (ws + "a").trimRight(), "R4");
-    Expect.equals(ws + ws + "a", (ws + ws + "a" + ws + ws).trimRight(), "R5");
-    Expect.equals("a" + ws + "a", ("a" + ws + "a" + ws + ws).trimRight(), "R6");
-    Expect.identical(untrimmable, untrimmable.trimRight(), "R7");
-  }
-
-  // Test each whitespace at different locations.
-  for (var ws in WHITESPACE) {
-    var c = new String.fromCharCode(ws);
-    test(c);
-  }
-  // Test all whitespaces at once at different locations.
-  test(new String.fromCharCodes(WHITESPACE));
-
-  // Empty strings.
-  Expect.identical("", "".trimLeft());
-  Expect.identical("", "".trimRight());
-
-  // Test all BMP chars and one surrogate pair.
-  for (int i = 0, j = 0; i <= 0x10000; i++) {
-    if (j < WHITESPACE.length && i == WHITESPACE[j]) {
-      j++;
-      continue;
-    }
-    // U+200b is currently being treated as whitespace by some JS engines.
-    // Should be fixed in tip-of-tree V8 per 2014-02-10.
-    // This line makes string_trimlr_test/none fail but /01 succeede where
-    // this bug is in the JS. Both succeede on the VM and where the bug is
-    // not. Remove this line and comment if all JS engines fix it.
-    if (i == 0x200b) continue; //             //# 01: ok
-
-    var s = new String.fromCharCode(i);
-    Expect.identical(s, s.trimLeft());
-    Expect.identical(s, s.trimRight());
-  }
-}