Show the dependender(s) for missing packages.

sdk/lib/_internal/pub/test/test_pub.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.
 
 /// Test infrastructure for testing pub. Unlike typical unit tests, most pub
 /// tests are integration tests that stage some stuff on the file system, run
 /// pub, and then validate the results. This library provides an API to build
 /// tests like that.
 library test_pub;
 
@@ skipping 417 matching lines @@
   return startPub(args: args, tokenEndpoint: tokenEndpoint);
 }
 
 /// Handles the beginning confirmation process for uploading a packages.
 /// Ensures that the right output is shown and then enters "y" to confirm the
 /// upload.
 void confirmPublish(ScheduledProcess pub) {
   // TODO(rnystrom): This is overly specific and inflexible regarding different
   // test packages. Should validate this a little more loosely.
   expect(pub.nextLine(), completion(startsWith(
-      'Publishing "test_pkg" 1.0.0 to ')));
+      'Publishing test_pkg 1.0.0 to ')));
   expect(pub.nextLine(), completion(equals("|-- LICENSE")));
   expect(pub.nextLine(), completion(equals("|-- lib")));
   expect(pub.nextLine(), completion(equals("|   '-- test_pkg.dart")));
   expect(pub.nextLine(), completion(equals("'-- pubspec.yaml")));
   expect(pub.nextLine(), completion(equals("")));
   expect(pub.nextLine(), completion(equals('Looks great! Are you ready to '
       'upload your package (y/n)?')));
 
   pub.writeLine("y");
 }
@@ skipping 410 matching lines @@
   bool matches(item, Map matchState) {
     if (item is! Pair) return false;
     return _firstMatcher.matches(item.first, matchState) &&
         _lastMatcher.matches(item.last, matchState);
   }
 
   Description describe(Description description) {
     description.addAll("(", ", ", ")", [_firstMatcher, _lastMatcher]);
   }
 }