Bring webdriver up to date with SDK changes, and a bit of refactoring.

pkg/webdriver/test/webdriver_test.dart

 library webdriver_test;
 import 'package:webdriver/webdriver.dart';
 import 'package:unittest/unittest.dart';
+import 'package:unittest/vm_config.dart';
 
 WebDriver web_driver;
 
 /**
  * These tests are not expected to be run as part of normal automated testing,
- * as they are slow, many of them do not yet work due to WebDriver limitations,
- * and they have external dependencies. Nontheless it is useful to keep them
- * here for manual testing.
+ * as they are slow and they have external dependencies.
  */
 main() {
+  useVMConfiguration();
+
   var web_driver = new WebDriver('localhost', 4444, '/wd/hub');
   var session = null;
-  var completionCallback;
 
   var exceptionHandler = (e) {
-    print('Handled: ${e.toString()}');
+    if (e.error is TestFailure) {
+      currentTestCase.fail(e.error.message, e.stackTrace.toString());
+    } else {
+      currentTestCase.error("Unexpected error: ${e.error}",
+          e.stackTrace.toString());
+    }
     if (session != null) {
-      session.close().then((_){
-        session = null;
-        config.handleExternalError(e, 'Unexpected failure');
-      });
+      var s = session;
+      session = null;
+      s.close();
     }
-    return true;
   };
 
   group('Sessionless tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     test('Get status', () {
-      Future f = web_driver.getStatus();
-      f.handleException(exceptionHandler);
-      f.then((status) {
-        expect(status['sessionId'], isNull);
-        completionCallback();
-      });
+      return web_driver.getStatus()
+          .then((status) {
+            expect(status['sessionId'], isNull);
+          })
+          .catchError(exceptionHandler);
     });
   });
 
   group('Basic session tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     test('Create session/get capabilities', () {
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.getCapabilities();
-      }).chain((capabilities) {
-        expect(capabilities['browserName'], equals('chrome'));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            expect(_session, isNotNull);
+            session = _session;
+            return session.getCapabilities();
+          })
+          .then((capabilities) {
+            expect(capabilities, isNotNull);
+            expect(capabilities['browserName'], equals('chrome'));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
 
     test('Create and get multiple sessions', () {
-      Future f = web_driver.newSession('chrome');
       var session2 = null;
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return web_driver.newSession('firefox');
-      }).chain((_session) {
-        session2 = _session;
-        return web_driver.getSessions();
-      }).chain((sessions) {
-        expect(sessions.length, greaterThanOrEqualTo(2));
-        return session2.close();
-      }).chain((_) {
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return web_driver.newSession('chrome');
+          })
+          .then((_session) {
+            session2 = _session;
+            return web_driver.getSessions();
+          })
+          .then((sessions) {
+            expect(sessions.length, greaterThanOrEqualTo(2));
+            return session2.close();
+          })
+          .then((_) {
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
 
     test('Set/get url', () {
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.getUrl();
-      }).chain((u) {
-        expect(u, equals('http://translate.google.com/'));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.getUrl();
+          })
+          .then((u) {
+            expect(u, equals('http://translate.google.com/'));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
 
     test('Navigation', () {
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.setUrl('http://www.google.com');
-      }).chain((_) {
-        return session.navigateBack();
-      }).chain((_) {
-        return session.getUrl();
-      }).chain((u) {
-        expect(u, equals('http://translate.google.com/'));
-        return session.navigateForward();
-      }).chain((_) {
-        return session.getUrl();
-      }).chain((url) {
-        expect(url, equals('http://www.google.com/'));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.setUrl('http://www.google.com');
+          })
+          .then((_) {
+            return session.navigateBack();
+          })
+          .then((_) {
+            return session.getUrl();
+          })
+          .then((u) {
+            expect(u, equals('http://translate.google.com/'));
+            return session.navigateForward();
+          })
+          .then((_) {
+            return session.getUrl();
+          })
+          .then((url) {
+            expect(url, equals('http://www.google.com/'));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
 
     test('Take a Screen shot', () {
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.getScreenshot();
-      }).chain((image) {
-        expect(image.length, greaterThan(10000));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.getScreenshot();
+          })
+          .then((image) {
+            expect(image.length, greaterThan(10000));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
   });
 
   group('Window tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     test('Window position and size', () {
+      // We don't validate the results. Setting size and position is flaky.
+      // I tried with the Selenium python client code and found it had the
+      // same issue, so this is not a bug in the Dart code.
       var window;
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.getWindow();
-      }).chain((_window) {
-        window = _window;
-        return window.setSize(200, 100);
-      }).chain((_) {
-        return window.getSize();
-      }).chain((ws) {
-        expect(ws['width'], equals(200));
-        expect(ws['height'], equals(100));
-        return window.setPosition(100, 80);
-      }).chain((_) {
-        return window.getPosition();
-      }).chain((wp) {
-        expect(wp['x'], equals(100));
-        expect(wp['y'], equals(80));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return session.getWindow();
+          })
+          .then((_window) {
+            window = _window;
+            return window.setSize(220, 400);
+          })
+          .then((_) {
+            return window.getSize();
+          })
+          .then((ws) {
+            return window.setPosition(100, 80);
+          })
+          .then((_) {
+            return window.getPosition();
+          })
+          .then((wp) {
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
   });
 
   group('Cookie tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     test('Create/query/delete', () {
       var window;
       var numcookies;
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        // Must go to a web page first to set a cookie.
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.getCookies();
-      }).chain((cookies) {
-        numcookies = cookies.length;
-        return session.setCookie({ 'name': 'foo', 'value': 'bar'});
-      }).chain((_) {
-        return session.getCookies();
-      }).chain((cookies) {
-        expect(cookies.length, equals(numcookies + 1));
-        expect(cookies, someElement(allOf(
-            containsPair('name', 'foo'),
-            containsPair('value', 'bar'))));
-        return session.deleteCookie('foo');
-      }).chain((_) {
-        return session.getCookies();
-      }).chain((cookies) {
-        expect(cookies.length, numcookies);
-        expect(cookies, everyElement(isNot(containsPair('name', 'foo'))));
-        return session.deleteCookie('foo');
-      }).chain((_) {
-        return session.getCookies();
-      }).chain((cookies) {
-        expect(cookies.length, numcookies);
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            // Must go to a web page first to set a cookie.
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.getCookies();
+          })
+          .then((cookies) {
+            numcookies = cookies.length;
+            return session.setCookie({ 'name': 'foo', 'value': 'bar'});
+          })
+          .then((_) {
+            return session.getCookies();
+          })
+          .then((cookies) {
+            expect(cookies.length, equals(numcookies + 1));
+            expect(cookies, someElement(allOf(
+                containsPair('name', 'foo'),
+                containsPair('value', 'bar'))));
+            return session.deleteCookie('foo');
+          })
+          .then((_) {
+            return session.getCookies();
+          })
+          .then((cookies) {
+            expect(cookies.length, numcookies);
+            expect(cookies, everyElement(isNot(containsPair('name', 'foo'))));
+            return session.deleteCookie('foo');
+          })
+          .then((_) {
+            return session.getCookies();
+          })
+          .then((cookies) {
+            expect(cookies.length, numcookies);
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
   });
 
   group('Storage tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
-    // Storage tests are return 500 errors. This seems to be a bug in
-    // the remote driver.
-
     test('Local Storage Create/query/delete', () {
       var window;
       var numkeys;
-      Future f = web_driver.newSession('htmlunit', { 'webStorageEnabled': true });
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        // Must go to a web page first.
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.getLocalStorageKeys();
-      }).chain((keys) {
-        print(keys);
-        numkeys = keys.length;
-        return session.setLocalStorageItem('foo', 'bar');
-      }).chain((_) {
-        return session.getLocalStorageKeys();
-      }).chain((keys) {
-        expect(keys.length, equals(numkeys + 1));
-        expect(keys, someElement(equals('foo')));
-        return session.getLocalStorageCount();
-      }).chain((count) {
-        expect(count, equals(numkeys + 1));
-        return session.getLocalStorageValue('foo');
-      }).chain((value) {
-        expect(value, equals('bar'));
-        return session.deleteLocalStorageValue('foo');
-      }).chain((_) {
-        return session.getLocalStorageKeys();
-      }).chain((keys) {
-        expect(keys.length, equals(numkeys));
-        expect(keys, everyElement(isNot(equals('foo'))));
-        return session.setLocalStorageItem('foo', 'bar');
-      }).chain((_) {
-        return session.clearLocalStorage();
-      }).chain((_) {
-        return session.getLocalStorageKeys();
-      }).chain((keys) {
-        expect(keys.length, isZero);
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('firefox', { 'webStorageEnabled': true })
+          .then((_session) {
+            session = _session;
+            return session.getCapabilities();
+          })
+          .then((capabilities) {
+            expect(capabilities, isNotNull);
+            expect(capabilities['webStorageEnabled'], isTrue);
+            // Must go to a web page first.
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.getLocalStorageKeys();
+          })
+          .then((keys) {
+            numkeys = keys.length;
+            return session.setLocalStorageItem('foo', 'bar');
+          })
+          .then((_) {
+            return session.getLocalStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, equals(numkeys + 1));
+            expect(keys, someElement(equals('foo')));
+            return session.getLocalStorageCount();
+          })
+          .then((count) {
+            expect(count, equals(numkeys + 1));
+            return session.getLocalStorageValue('foo');
+          })
+          .then((value) {
+            expect(value, equals('bar'));
+            return session.setLocalStorageItem('bar', 'foo');
+          })
+          .then((_) {
+            return session.getLocalStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, equals(numkeys + 2));
+            expect(keys, someElement(equals('bar')));
+            expect(keys, someElement(equals('foo')));
+            return session.deleteLocalStorageValue('foo');
+          })
+          .then((_) {
+            return session.getLocalStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, equals(numkeys + 1));
+            expect(keys, everyElement(isNot(equals('foo'))));
+            return session.setLocalStorageItem('foo', 'bar');
+          })
+          .then((_) {
+            return session.clearLocalStorage();
+          })
+          .then((_) {
+            return session.getLocalStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, isZero);
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
 
     test('Session Storage Create/query/delete', () {
       var window;
       var numkeys;
-      Future f = web_driver.newSession('chrome', { 'webStorageEnabled': true });
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        // Must go to a web page first.
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.getSessionStorageKeys();
-      }).chain((keys) {
-        print(keys);
-        numkeys = keys.length;
-        return session.setSessionStorageItem('foo', 'bar');
-      }).chain((_) {
-        return session.getSessionStorageKeys();
-      }).chain((keys) {
-        expect(keys.length, equals(numkeys + 1));
-        expect(keys, someElement(equals('foo')));
-        return session.getSessionStorageCount();
-      }).chain((count) {
-        expect(count, equals(numkeys + 1));
-        return session.getSessionStorageValue('foo');
-      }).chain((value) {
-        expect(value, equals('bar'));
-        return session.deleteSessionStorageValue('foo');
-      }).chain((_) {
-        return session.getSessionStorageKeys();
-      }).chain((keys) {
-        expect(keys.length, equals(numkeys));
-        expect(keys, everyElement(isNot(equals('foo'))));
-        return session.setSessionStorageItem('foo', 'bar');
-      }).chain((_) {
-        return session.clearSessionStorage();
-      }).chain((_) {
-        return session.getSessionStorageKeys();
-      }).chain((keys) {
-        expect(keys.length, isZero);
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
-    });
+      return web_driver.newSession('chrome', { 'webStorageEnabled': true })
+          .then((_session) {
+            session = _session;
+            // Must go to a web page first.
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.getSessionStorageKeys();
+          })
+          .then((keys) {
+            numkeys = keys.length;
+            return session.setSessionStorageItem('foo', 'bar');
+          })
+          .then((_) {
+            return session.getSessionStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, equals(numkeys + 1));
+            expect(keys, someElement(equals('foo')));
+            return session.getSessionStorageCount();
+          })
+          .then((count) {
+            expect(count, equals(numkeys + 1));
+            return session.getSessionStorageValue('foo');
+          })
+          .then((value) {
+            expect(value, equals('bar'));
+            return session.deleteSessionStorageValue('foo');
+          })
+          .then((_) {
+            return session.getSessionStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, equals(numkeys));
+            expect(keys, everyElement(isNot(equals('foo'))));
+            return session.setSessionStorageItem('foo', 'bar');
+          })
+          .then((_) {
+            return session.clearSessionStorage();
+          })
+          .then((_) {
+            return session.getSessionStorageKeys();
+          })
+          .then((keys) {
+            expect(keys.length, isZero);
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
+        });
 
   });
 
   group('Script tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     // This test is just timing out eventually with a 500 response.
 
     test('Sync script', () {
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.setUrl('http://translate.google.com');
-      }).chain((_) {
-        return session.execute('function(x, y) { return x * y; }', [2, 3]);
-      }).chain((value) {
-        expect(value, equals(6));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return session.setUrl('http://translate.google.com');
+          })
+          .then((_) {
+            return session.execute('return arguments[0] * arguments[1];',
+                [2, 3]);
+          })
+          .then((value) {
+            expect(value, equals(6));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
   });
 
   group('Element tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     test('Elements', () {
       var w;
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-        return session.setUrl('http://duckduckgo.com');
-      }).chain((_) {
-        return session.findElement('id', 'search_form_input_homepage');
-      }).chain((_w) {
-        print(_w);
-        w = _w['ELEMENT'];
-        return session.sendKeyStrokesToElement(w,
-            [ 'g', 'o', 'o', 'g', 'l', 'e' ]);
-      }).chain((_) {
-        return session.submit(w);
-      }).chain((_) {
-        return session.findElements('class name', 'links_zero_click_disambig');
-      }).chain((divs) {
-        expect(divs.length, greaterThan(0));
-        return session.close();
-      }).then((_) {
-        session = null;
-        completionCallback();
-      });
+      return web_driver.newSession('chrome')
+          .then((_session) {
+            session = _session;
+            return session.setUrl('http://duckduckgo.com');
+          })
+          .then((_) {
+            return session.findElement('id', 'search_form_input_homepage');
+          })
+          .then((_w) {
+            w = _w['ELEMENT'];
+            return session.sendKeyStrokesToElement(w,
+                [ 'g', 'o', 'o', 'g', 'l', 'e' ]);
+          })
+          .then((_) {
+            return session.submit(w);
+          })
+          .then((_) {
+            return session.findElements('class name',
+                'links_zero_click_disambig');
+          })
+          .then((divs) {
+            expect(divs.length, greaterThan(0));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
     });
   });
 
   group('Log tests', () {
-    setUp(() {
-      completionCallback = expectAsync0((){
-      });
-    });
-
     // Currently, getLogTypes returns a 404, and attempts to get the
     // logs either return 500 with 'Unknown log type' or 500 with
     // 'Unable to convert logEntries'.
 
     test('Log retrieval', () {
-      Future f = web_driver.newSession('chrome');
-      f.handleException(exceptionHandler);
-      f.chain((_session) {
-        session = _session;
-          return session.getLogTypes();
-      }).chain((logTypes) {
-        //print(logTypes);
-        return session.getLogs('driver');
-      }).chain((logs) {
-        //print(logs);
-        return session.close();
-      }).then((_) {
+      return web_driver.newSession('firefox')
+          .then((_session) {
+            session = _session;
+            return session.getLogTypes();
+          })
+          .then((logTypes) {
+            expect(logTypes, someElement(equals('client')));
+            expect(logTypes, someElement(equals('server')));
+            return session.getLogs('driver');
+          })
+          .then((logs) {
+            expect(logs.length, greaterThan(0));
+            return session.close();
+          })
+          .then((_) {
+            session = null;
+          })
+          .catchError(exceptionHandler);
+        });
+  });
+
+  group('Cleanup', () {
+    test('Cleanup', () {
+      web_driver = null;
+      if (session != null) {
+        var s = session;
         session = null;
-        completionCallback();
-      });
+        s.close();
+      }
     });
   });
 }