Stop auto-generating Pub snapshots for testing.

lib/src/io.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.
 
 /// Helper functionality to make working with IO easier.
 library pub.io;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
@@ skipping 467 matching lines @@
 /// Whether the current process is one of pub's test files.
 ///
 /// This works because an actual pub executable that imports this will always
 /// start with "pub".
 final bool runningAsTest =
     !path.url.basename(Platform.script.path).startsWith('pub.');
 
 /// Whether the current process is a pub subprocess being run from a test.
 ///
 /// This works because when running from tests, pub always uses a snapshot named
 /// "pub.test.snapshot", which is not used outside of tests.

[Bob Nystrom, 2015/06/26 16:41:16]

Update the doc comment.

[nweiz, 2015/06/26 19:49:10]

Done.

-final bool runningFromTest = Platform.script.path.endsWith('.test.snapshot');
+final bool runningFromTest = Platform.environment.containsKey('_PUB_TESTING');
 
 /// Whether pub is running from within the Dart SDK, as opposed to from the Dart
 /// source repository.
 final bool runningFromSdk =
     !runningFromTest && Platform.script.path.endsWith('.snapshot');
 
 /// A regular expression to match the script path of a pub script running from
 /// source in the Dart repo.
 final _dartRepoRegExp = new RegExp(
     r"/third_party/pkg/pub/("
@@ skipping 565 matching lines @@
 
   // TODO(rnystrom): Remove this and change to returning one string.
   static List<String> _toLines(String output) {
     var lines = splitLines(output);
     if (!lines.isEmpty && lines.last == "") lines.removeLast();
     return lines;
   }
 
   bool get success => exitCode == exit_codes.SUCCESS;
 }