Add “pub cache repair” to forcibly re-install previously cached packages.

sdk/lib/_internal/pub/test/pub_test.dart

 // Copyright (c) 2012, 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.
 
 library pub_tests;
 
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../lib/src/exit_codes.dart' as exit_codes;
 import 'test_pub.dart';
@@ skipping 75 matching lines @@
   integration('running pub with --help after a command with subcommands shows '
               'command usage', () {
     schedulePub(args: ['cache', '--help'],
         output: '''
           Work with the system cache.
 
           Usage: pub cache <subcommand>
           -h, --help    Print usage information for this command.
 
           Available subcommands:
-            add   Install a package.
+            add      Install a package.
+            repair   Reinstall cached packages.
      ''');
   });
 
 
   integration('running pub with just --version displays version', () {
     schedulePub(args: ['--version'], output: VERSION_STRING);
   });
 
   integration('an unknown command displays an error message', () {
     schedulePub(args: ['quylthulg'],
@@ skipping 17 matching lines @@
 
   integration('an unknown subcommand displays an error message', () {
     schedulePub(args: ['cache', 'quylthulg'],
         error: '''
         Could not find a subcommand named "quylthulg" for "pub cache".
 
         Usage: pub cache <subcommand>
         -h, --help    Print usage information for this command.
 
         Available subcommands:
-          add   Install a package.
+          add      Install a package.
+          repair   Reinstall cached packages.
         ''',
         exitCode: exit_codes.USAGE);
   });
 
   integration('an unknown option displays an error message', () {
     schedulePub(args: ['--blorf'],
         error: '''
         Could not find an option named "blorf".
         Run "pub help" to see available options.
         ''',
@@ skipping 24 matching lines @@
 
   integration('a missing subcommand displays an error message', () {
     schedulePub(args: ['cache'],
         error: '''
         Missing subcommand for "pub cache".
 
         Usage: pub cache <subcommand>
         -h, --help    Print usage information for this command.
 
         Available subcommands:
-          add   Install a package.
+          add      Install a package.
+          repair   Reinstall cached packages.
         ''',
         exitCode: exit_codes.USAGE);
   });
 
   group('help', () {
     integration('shows global help if no command is given', () {
       schedulePub(args: ['help'], output: USAGE_STRING);
     });
 
     integration('shows help for a command', () {
@@ skipping 80 matching lines @@
 
     integration('an unknown help subcommand displays an error message', () {
       schedulePub(args: ['help', 'cache', 'quylthulg'],
           error: '''
             Could not find a subcommand named "quylthulg" for "pub cache".
 
             Usage: pub cache <subcommand>
             -h, --help    Print usage information for this command.
 
             Available subcommands:
-              add   Install a package.
+              add      Install a package.
+              repair   Reinstall cached packages.
             ''',
             exitCode: exit_codes.USAGE);
     });
 
     integration('an unexpected help subcommand displays an error message', () {
       schedulePub(args: ['help', 'version', 'badsubcommand'],
           error: '''
             Command "pub version" does not expect a subcommand.
 
             Usage: pub version
             -h, --help    Print usage information for this command.
             ''',
             exitCode: exit_codes.USAGE);
     });
   });
 
   group('version', () {
     integration('displays the current version', () {
       schedulePub(args: ['version'], output: VERSION_STRING);
     });
   });
 }