Command to print paths to dependencies.

sdk/lib/_internal/pub/test/list_package_dirs/lists_dependency_directories_test.dart

Index: sdk/lib/_internal/pub/test/list_package_dirs/lists_dependency_directories_test.dart
diff --git a/sdk/lib/_internal/pub/test/list_package_dirs/lists_dependency_directories_test.dart b/sdk/lib/_internal/pub/test/list_package_dirs/lists_dependency_directories_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b3ac39bddda703c3a46f2b288d224cafc91a2cbb
--- /dev/null
+++ b/sdk/lib/_internal/pub/test/list_package_dirs/lists_dependency_directories_test.dart
@@ -0,0 +1,36 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 d.file.
+
+import 'package:path/path.dart' as path;
+
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+
+main() {
+  initConfig();
+  integration('prints the local paths to all packages in the lockfile', () {
+    servePackages([packageMap("bar", "1.0.0")]);
+
+    d.dir("foo", [
+      d.libDir("foo"),
+      d.libPubspec("foo", "1.0.0")
+    ]).create();
+
+    d.dir(appPath, [
+      d.appPubspec({
+        "foo": {"path": path.join(sandboxDir, "foo")},
+        "bar": "any"
+      })
+    ]).create();
+
+    pubInstall();
+
+    schedulePub(args: ["list-package-dirs", "--format=json"],
+        outputJson: {
+          "foo": path.join(sandboxDir, "foo"),
+          "bar": port.then((p) => path.join(sandboxDir, cachePath, "hosted",
+              "localhost%58$p", "bar-1.0.0"))
+        });
+  });
+}