split out vm-specific tests

tests/language/src/CharEscapeVMTest.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 for reading escape sequences in string literals
+// This test explicitly checks for handling for 4 byte unicode.
+
+class CharEscapeVMTest {
+  static testMain() {
+    var v10000 = "\u{10000}";
+    var v010000 = "\u{010000}";
+    Expect.equals(1, v10000.length);
+    Expect.equals(1, v010000.length);
+    Expect.equals("\u{10000}", new String.fromCharCodes([0x10000]));
+    Expect.equals("\u{010000}", new String.fromCharCodes([0x10000]));
+
+
+    var v1FFFF = "\u{1FFFF}";
+    var v01FFFF = "\u{01FFFF}";
+    Expect.equals(1, v1FFFF.length);
+    Expect.equals(1, v01FFFF.length);
+    Expect.equals("\u{1FFFF}", new String.fromCharCodes([0x1FFFF]));
+    Expect.equals("\u{01FFFF}", new String.fromCharCodes([0x1FFFF]));
+
+    var v105555 = "\u{105555}";
+    Expect.equals(1, v105555.length);
+    Expect.equals("\u{105555}", new String.fromCharCodes([0x105555]));
+
+    var v10FFFF = "\u{10FFFF}";
+    Expect.equals(1, v10FFFF.length);
+    Expect.equals("\u{10FFFF}", new String.fromCharCodes([0x10FFFF]));
+  }
+}
+
+main() {
+  CharEscapeVMTest.testMain();
+}