Auto-reinstall broken packages in the system cache.

utils/tests/pub/install/hosted/repair_cache_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 '../../../../../pkg/path/lib/path.dart' as path;
+
+import '../../../../pub/io.dart';
+import '../../test_pub.dart';
+
+main() {
+  initConfig();
+  integration('re-installs a package if it has an empty "lib" directory', () {
+
+    servePackages([package("foo", "1.2.3")]);
+
+    // Set up a cache with a broken foo package.
+    dir(cachePath, [
+      dir('hosted', [
+        async(port.then((p) => dir('localhost%58$p', [
+          dir("foo-1.2.3", [
+            libPubspec("foo", "1.2.3"),
+            // Note: empty "lib" directory.
+            dir("lib", [])
+          ])
+        ])))
+      ])
+    ]).scheduleCreate();
+
+    appDir([dependency("foo", "1.2.3")]).scheduleCreate();
+
+    schedulePub(args: ['install'],
+        output: new RegExp("Dependencies installed!\$"));
+
+    cacheDir({"foo": "1.2.3"}).scheduleValidate();
+    packagesDir({"foo": "1.2.3"}).scheduleValidate();
+  });
+
+  integration('re-installs a package if it has no pubspec', () {
+
+    servePackages([package("foo", "1.2.3")]);
+
+    // Set up a cache with a broken foo package.
+    dir(cachePath, [
+      dir('hosted', [
+        async(port.then((p) => dir('localhost%58$p', [
+          dir("foo-1.2.3", [
+            libDir("foo")
+            // Note: no pubspec.
+          ])
+        ])))
+      ])
+    ]).scheduleCreate();
+
+    appDir([dependency("foo", "1.2.3")]).scheduleCreate();
+
+    schedulePub(args: ['install'],
+        output: new RegExp("Dependencies installed!\$"));
+
+    cacheDir({"foo": "1.2.3"}).scheduleValidate();
+    packagesDir({"foo": "1.2.3"}).scheduleValidate();
+  });
+}