Fix an edge case in dependency freshness checking.

test/must_pub_get_test.dart

 // Copyright (c) 2015, 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 'dart:io';
 
 import 'package:path/path.dart' as p;
 import 'package:pub/src/exit_codes.dart' as exit_codes;
 import 'package:pub/src/io.dart';
@@ skipping 321 matching lines @@
         ]).create();
 
         pubGet();
 
         _touch("pubspec.yaml");
       });
 
       _runsSuccessfully();
     });
 
+    // Regression test for #1416
+    group("a path dependency has a dependency on the root package", () {
+      setUp(() {
+        d.dir("foo", [
+          d.libPubspec("foo", "1.0.0", deps: {"myapp": "any"})
+        ]).create();
+
+        d.dir(appPath, [
+          d.appPubspec({"foo": {"path": "../foo"}})
+        ]).create();
+
+        pubGet();
+
+        _touch("pubspec.lock");
+      });
+
+      _runsSuccessfully();
+    });
+
     group("the lockfile is newer than .packages, but they're up-to-date", () {
       setUp(() {
         d.dir(appPath, [
           d.appPubspec({"foo": "1.0.0"})
         ]).create();
 
         pubGet();
 
         _touch("pubspec.lock");
       });
@@ skipping 87 matching lines @@
 void _touch(String path) {
   schedule(() async {
     // Delay a bit to make sure the modification times are noticeably different.
     // 1s seems to be the finest granularity that dart:io reports.
     await new Future.delayed(new Duration(seconds: 1));
 
     path = p.join(sandboxDir, "myapp", path);
     touch(path);
   }, "touching $path");
 }