Add transformer support to Converters.

tests/lib/convert/json_unicode_tests.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.
+
+library json_unicode_tests;
+import 'unicode_tests.dart';
+
+const _QUOTE = 0x22;  // "
+const _COLON = 0x3a;  // :
+const _COMMA = 0x2c;  // ,
+const _BRACE_OPEN = 0x7b;  // {
+const _BRACE_CLOSE = 0x7d;  // }
+const _BRACKET_OPEN = 0x5b;  // [
+const _BRACKET_CLOSE = 0x5d;  // ]
+
+_expandUnicodeTests() {
+  return UNICODE_TESTS.expand((test) {

[Søren Gjesse, 2013/07/26 07:37:23]

Please add a comment listing the different JSONs generated.

[floitsch, 2013/07/26 10:35:32]

Done.

+    var bytes = test[0];
+    var string = test[1];
+    var expanded = [];
+    var inQuotesBytes = [];
+    inQuotesBytes.add(_QUOTE);
+    inQuotesBytes.addAll(bytes);
+    inQuotesBytes.add(_QUOTE);
+    expanded.add([inQuotesBytes, string]);
+
+    var listExpected = [[[string]]];  // triple nested string.
+    var inListBytes = [];
+    inListBytes.addAll([_BRACKET_OPEN, _BRACKET_OPEN, _BRACKET_OPEN]);
+    inListBytes.addAll(inQuotesBytes);
+    inListBytes.addAll([_BRACKET_CLOSE, _BRACKET_CLOSE, _BRACKET_CLOSE]);
+    expanded.add([inListBytes, listExpected]);
+
+    // Same, but duplicated.
+    var listLongerExpected = [listExpected, listExpected, listExpected];
+    var listLongerBytes = [];
+    listLongerBytes.add(_BRACKET_OPEN);
+    listLongerBytes.addAll(inListBytes);
+    listLongerBytes.add(_COMMA);
+    listLongerBytes.addAll(inListBytes);
+    listLongerBytes.add(_COMMA);
+    listLongerBytes.addAll(inListBytes);
+    listLongerBytes.add(_BRACKET_CLOSE);
+    expanded.add([listLongerBytes, listLongerExpected]);
+
+    // in Map.
+    var mapExpected = new Map();
+    mapExpected[string] = listLongerExpected;
+    var mapBytes = [];
+    mapBytes.add(_BRACE_OPEN);
+    mapBytes.addAll(inQuotesBytes);
+    mapBytes.add(_COLON);
+    mapBytes.addAll(listLongerBytes);
+    mapBytes.add(_BRACE_CLOSE);
+    expanded.add([mapBytes, mapExpected]);
+
+    return expanded;
+  }).toList();
+}
+
+final JSON_UNICODE_TESTS = _expandUnicodeTests();