Improve the detection lockfile freshness.

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 201 matching lines @@
 ///
 /// By default, this validates that the command completes successfully and
 /// understands the normal output of a successful pub command. If [warning] is
 /// given, it expects the command to complete successfully *and* print
 /// [warning] to stderr. If [error] is given, it expects the command to *only*
 /// print [error] to stderr. [output], [error], and [warning] may be strings,
 /// [RegExp]s, or [Matcher]s.
 ///
 /// If [exitCode] is given, expects the command to exit with that code.
 // TODO(rnystrom): Clean up other tests to call this when possible.
-void pubCommand(RunCommand command,
-    {Iterable<String> args, output, error, warning, int exitCode}) {
+void pubCommand(RunCommand command, {Iterable<String> args, output, error,
+    warning, int exitCode, Map<String, String> environment}) {
   if (error != null && warning != null) {
     throw new ArgumentError("Cannot pass both 'error' and 'warning'.");
   }
 
   var allArgs = [command.name];
   if (args != null) allArgs.addAll(args);
 
   if (output == null) output = command.success;
 
   if (error != null && exitCode == null) exitCode = 1;
 
   // No success output on an error.
   if (error != null) output = null;
   if (warning != null) error = warning;
 
-  schedulePub(args: allArgs, output: output, error: error, exitCode: exitCode);
+  schedulePub(args: allArgs, output: output, error: error, exitCode: exitCode,
+      environment: environment);
 }
 
-void pubGet({Iterable<String> args, output, error, warning, int exitCode}) {
+void pubGet({Iterable<String> args, output, error, warning, int exitCode,
+    Map<String, String> environment}) {
   pubCommand(RunCommand.get, args: args, output: output, error: error,
-      warning: warning, exitCode: exitCode);
+      warning: warning, exitCode: exitCode, environment: environment);
 }
 
-void pubUpgrade({Iterable<String> args, output, error, warning, int exitCode}) {
+void pubUpgrade({Iterable<String> args, output, error, warning, int exitCode,
+    Map<String, String> environment}) {
   pubCommand(RunCommand.upgrade, args: args, output: output, error: error,
-      warning: warning, exitCode: exitCode);
+      warning: warning, exitCode: exitCode, environment: environment);
 }
 
 void pubDowngrade({Iterable<String> args, output, error, warning,
-    int exitCode}) {
+    int exitCode, Map<String, String> environment}) {
   pubCommand(RunCommand.downgrade, args: args, output: output, error: error,
-      warning: warning, exitCode: exitCode);
+      warning: warning, exitCode: exitCode, environment: environment);
 }
 
 /// Schedules starting the "pub [global] run" process and validates the
 /// expected startup output.
 ///
 /// If [global] is `true`, this invokes "pub global run", otherwise it does
 /// "pub run".
 ///
 /// Returns the `pub run` process.
 ScheduledProcess pubRun({bool global: false, Iterable<String> args}) {
@@ skipping 596 matching lines @@
         _lastMatcher.matches(item.last, matchState);
   }
 
   Description describe(Description description) {
     return description.addAll("(", ", ", ")", [_firstMatcher, _lastMatcher]);
   }
 }
 
 /// A [StreamMatcher] that matches multiple lines of output.
 StreamMatcher emitsLines(String output) => inOrder(output.split("\n"));