Create a unit test config for the pub tests that's prettier.

utils/tests/pub/test_pub.dart

Index: utils/tests/pub/test_pub.dart
diff --git a/utils/tests/pub/test_pub.dart b/utils/tests/pub/test_pub.dart
index 87053b9a3f1b4ae0e6e09a2e6c44b570b8d27f5b..d9fd91ba66e00bc9dab982d2b037bced3a62e5f3 100644
--- a/utils/tests/pub/test_pub.dart
+++ b/utils/tests/pub/test_pub.dart
@@ -29,6 +29,16 @@ import '../../pub/system_cache.dart';
 import '../../pub/utils.dart';
 import '../../pub/validator.dart';
 import '../../pub/yaml/yaml.dart';
+import 'command_line_config.dart';
+
+/// This should be called at the top of a test file to set up an appropriate
+/// test configuration for the machine running the tests.
+initConfig() {
+  // If we aren't running on the bots, use the human-friendly config.
+  if (new Options().arguments.contains('--human')) {
+    configure(new CommandLineConfiguration());
+  }
+}
 
 /// Creates a new [FileDescriptor] with [name] and [contents].
 FileDescriptor file(Pattern name, String contents) =>
@@ -447,7 +457,6 @@ final _TIMEOUT = 30000;
 /// once per test case.
 void run() {
   var createdSandboxDir;
-
   var asyncDone = expectAsync0(() {});
 
   Future cleanup() {