Adding supported checks for HttpRequestProgressEvent.

tests/html/xhr_test.dart

 // Copyright (c) 2012, 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 XHRTest;
 import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
+import '../../pkg/unittest/lib/html_individual_config.dart';
 import 'dart:html';
 import 'dart:json' as json;
 
 main() {
-  useHtmlConfiguration();
+  useHtmlIndividualConfiguration();
   var url = "/tests/html/xhr_cross_origin_data.txt";
 
   void validate200Response(xhr) {
     expect(xhr.status, equals(200));
     var data = json.parse(xhr.response);
     expect(data, contains('feed'));
     expect(data['feed'], contains('entry'));
     expect(data, isMap);
   }
 
   void validate404(xhr) {
     expect(xhr.status, equals(404));
     expect(xhr.responseText, equals(''));
   }
 
-  test('XHR No file', () {
-    HttpRequest xhr = new HttpRequest();
-    xhr.open("GET", "NonExistingFile", true);
-    xhr.on.readyStateChange.add(expectAsyncUntil1((event) {
-      if (xhr.readyState == HttpRequest.DONE) {
-        validate404(xhr);
-      }
-    }, () => xhr.readyState == HttpRequest.DONE));
-    xhr.send();
+  group('supported_HttpRequestProgressEvent', () {
+    test('supported', () {
+      expect(HttpRequestProgressEvent.supported, isTrue);
+    });
   });
 
-  test('XHR file', () {
-    var xhr = new HttpRequest();
-    xhr.open('GET', url, true);
-    xhr.on.readyStateChange.add(expectAsyncUntil1((e) {
-      if (xhr.readyState == HttpRequest.DONE) {
+  group('xhr', () {
+    test('XHR No file', () {
+      HttpRequest xhr = new HttpRequest();
+      xhr.open("GET", "NonExistingFile", true);
+      xhr.on.readyStateChange.add(expectAsyncUntil1((event) {
+        if (xhr.readyState == HttpRequest.DONE) {
+          validate404(xhr);
+        }
+      }, () => xhr.readyState == HttpRequest.DONE));
+      xhr.send();
+    });
+
+    test('XHR file', () {
+      var xhr = new HttpRequest();
+      xhr.open('GET', url, true);
+      xhr.on.readyStateChange.add(expectAsyncUntil1((e) {
+        if (xhr.readyState == HttpRequest.DONE) {
+          validate200Response(xhr);
+        }
+      }, () => xhr.readyState == HttpRequest.DONE));
+      xhr.send();
+    });
+
+    test('XHR.get No file', () {
+      new HttpRequest.get("NonExistingFile", expectAsync1((xhr) {
+        expect(xhr.readyState, equals(HttpRequest.DONE));
+        validate404(xhr);
+      }));
+    });
+
+    test('XHR.get file', () {
+      var xhr = new HttpRequest.get(url, expectAsync1((event) {
+        expect(event.readyState, equals(HttpRequest.DONE));
+        validate200Response(event);
+      }));
+    });
+
+    test('XHR.getWithCredentials No file', () {
+      new HttpRequest.getWithCredentials("NonExistingFile", expectAsync1((xhr) {
+        expect(xhr.readyState, equals(HttpRequest.DONE));
+        validate404(xhr);
+      }));
+    });
+
+    test('XHR.getWithCredentials file', () {
+      new HttpRequest.getWithCredentials(url, expectAsync1((xhr) {
+        expect(xhr.readyState, equals(HttpRequest.DONE));
         validate200Response(xhr);
-      }
-    }, () => xhr.readyState == HttpRequest.DONE));
-    xhr.send();
-  });
+      }));
+    });
 
-  test('XHR.get No file', () {
-    new HttpRequest.get("NonExistingFile", expectAsync1((xhr) {
-      expect(xhr.readyState, equals(HttpRequest.DONE));
-      validate404(xhr);
-    }));
-  });
-
-  test('XHR.get file', () {
-    var xhr = new HttpRequest.get(url, expectAsync1((event) {
-      expect(event.readyState, equals(HttpRequest.DONE));
-      validate200Response(event);
-    }));
-  });
-
-  test('XHR.getWithCredentials No file', () {
-    new HttpRequest.getWithCredentials("NonExistingFile", expectAsync1((xhr) {
-      expect(xhr.readyState, equals(HttpRequest.DONE));
-      validate404(xhr);
-    }));
-  });
-
-  test('XHR.getWithCredentials file', () {
-    new HttpRequest.getWithCredentials(url, expectAsync1((xhr) {
-      expect(xhr.readyState, equals(HttpRequest.DONE));
-      validate200Response(xhr);
-    }));
+    test('HttpRequestProgressEvent', () {
+      var expectation = HttpRequestProgressEvent.supported ?
+          returnsNormally : throws;
+      expect(() {
+        var event = new Event.eventType('XMLHttpRequestProgressEvent', '');
+        expect(event is HttpRequestProgressEvent, isTrue);
+      }, expectation);
+    });
   });
 }