Regression tests for 25658 and 24817.

tests/html/js_typed_interop_bind_this_test.dart

Index: tests/html/js_typed_interop_bind_this_test.dart
diff --git a/tests/html/js_typed_interop_bind_this_test.dart b/tests/html/js_typed_interop_bind_this_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d241cb9ee4a2dfc7958dfcb8cadca66efdb6360e
--- /dev/null
+++ b/tests/html/js_typed_interop_bind_this_test.dart
@@ -0,0 +1,53 @@
+// Copyright (c) 2016, 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.
+
+@JS()
+library js_typed_interop_bind_this_test;
+
+import 'dart:html';
+
+import 'package:js/js.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
+import 'package:unittest/html_individual_config.dart';
+
+// This is a regression test for https://github.com/dart-lang/sdk/issues/25658
+
+_injectJs() {
+  document.body.append(new ScriptElement()
+    ..type = 'text/javascript'
+    ..innerHtml = r"""
+  "use strict";
+
+  function JsTest() {
+  }
+
+  JsTest.returnThis = function(name, value) {
+    return this;
+  };
+""");
+}
+
+@JS('JsTest.returnThis')
+external returnThis([name, value]);
+
+@JS('JsTest')
+external get jsTestObject;
+
+@JS('window')
+external get jsWindow;
+
+main() {
+  _injectJs();
+
+  useHtmlIndividualConfiguration();
+
+  group('bind this', () {
+    test('simple', () {
+      expect(identical(returnThis(), jsWindow), isFalse);
+      expect(identical(returnThis(), null), isFalse);
+      expect(identical(returnThis(), jsTestObject), isTrue);
+    });
+  });
+}