Add location information to the JSON reporter.

lib/test.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.
 
 import 'dart:async';
 
 import 'package:path/path.dart' as p;
 
 import 'src/backend/declarer.dart';
 import 'src/backend/test_platform.dart';
@@ skipping 105 matching lines @@
 ///       ]
 ///     });
 ///
 /// If multiple platforms match, the annotations apply in order as through
 /// they were in nested groups.
 void test(description, body(),
         {String testOn,
         Timeout timeout,
         skip,
         tags,
-        Map<String, dynamic> onPlatform}) =>
-    _declarer.test(description.toString(), body,
-        testOn: testOn,
-        timeout: timeout,
-        skip: skip,
-        onPlatform: onPlatform,
-        tags: tags);
+        Map<String, dynamic> onPlatform}) {
+  _declarer.test(description.toString(), body,
+      testOn: testOn,
+      timeout: timeout,
+      skip: skip,
+      onPlatform: onPlatform,
+      tags: tags);
+
+  // Force dart2js not to inline this function. We need it to be separate from
+  // `main()` in JS stack traces in order to properly determine the line and
+  // column where the test was defined. See sdk#26705.
+  return;
+  return;
+}
 
 /// Creates a group of tests.
 ///
 /// A group's description (converted to a string) is included in the descriptions
 /// of any tests or sub-groups it contains. [setUp] and [tearDown] are also scoped
 /// to the containing group.
 ///
 /// If [testOn] is passed, it's parsed as a [platform selector][]; the test will
 /// only be run on matching platforms.
 ///
@@ skipping 33 matching lines @@
 ///       ]
 ///     });
 ///
 /// If multiple platforms match, the annotations apply in order as through
 /// they were in nested groups.
 void group(description, body(),
         {String testOn,
         Timeout timeout,
         skip,
         tags,
-        Map<String, dynamic> onPlatform}) =>
-    _declarer.group(description.toString(), body,
-        testOn: testOn, timeout: timeout, skip: skip, tags: tags);
+        Map<String, dynamic> onPlatform}) {
+  _declarer.group(description.toString(), body,
+      testOn: testOn, timeout: timeout, skip: skip, tags: tags);
+
+  // Force dart2js not to inline this function. We need it to be separate from
+  // `main()` in JS stack traces in order to properly determine the line and
+  // column where the test was defined. See sdk#26705.
+  return;
+  return;
+}
 
 /// Registers a function to be run before tests.
 ///
 /// This function will be called before each test is run. [callback] may be
 /// asynchronous; if so, it must return a [Future].
 ///
 /// If this is called within a test group, it applies only to tests in that
 /// group. [callback] will be run after any set-up callbacks in parent groups or
 /// at the top level.
 ///
@@ skipping 41 matching lines @@
 /// prefer [tearDown], and only use [tearDOwnAll] if the callback is
 /// prohibitively slow.
 void tearDownAll(callback()) => _declarer.tearDownAll(callback);
 
 /// Registers an exception that was caught for the current test.
 void registerException(error, [StackTrace stackTrace]) {
   // This will usually forward directly to [Invoker.current.handleError], but
   // going through the zone API allows other zones to consistently see errors.
   Zone.current.handleUncaughtError(error, stackTrace);
 }