Add a fall-back for novel HTML Elements

tests/compiler/dart2js_native/native_novel_html_test.dart

+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file

[ngeoffray, 2012/12/12 08:14:10]

2011 is so almost 2 years ago :-)

+// 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.
+
+// Test to see if novel HTML tags are interpreted as HTMLElement.
+
+class Element native "*HTMLElement" {
+  String foo(int x) => '[${bar(x+1)}]';
+  String bar(int x) native;
+}
+
+makeE() native;
+makeF() native;
+
+void setup() native """
+// A novel HTML element.
+function HTMLGoofyElement(){}
+HTMLGoofyElement.prototype.bar = function(a){return 'Goofy.foo(' + a  + ')';}
+makeE = function(){return new HTMLGoofyElement};
+
+// A non-HTML element with a misleading name.
+function HTMLFakeyElement(){}
+HTMLFakeyElement.prototype.bar = function(a){return 'Fakey.foo(' + a  + ')';}
+makeF = function(){return new HTMLFakeyElement};
+
+// Make the HTMLGoofyElement look like a real host object.
+var theRealObjectToString = Object.prototype.toString;
+Object.prototype.toString = function() {
+  if (this instanceof HTMLGoofyElement) return '[object HTMLGoofyElement]';
+  return theRealObjectToString.call(this);
+}
+""";
+
+
+main() {
+  setup();
+
+  print(123);

[kasperl, 2012/12/12 06:43:50]

Is this needed?

+  var e = makeE();
+  Expect.equals('[Goofy.foo(11)]', e.foo(10));
+
+  var f = makeF();
+  expectNoSuchMethod(() => f.foo(20), 'f.foo(20) should fail');
+}
+
+expectNoSuchMethod(action, note) {

[kasperl, 2012/12/12 06:43:50]

Can you use Expect.throws?

+  bool caught = false;
+  try {
+    action();
+  } catch (ex) {
+    caught = true;
+    Expect.isTrue(ex is NoSuchMethodError, note);
+  }
+  Expect.isTrue(caught, note);
+}