Support paths outside of "bin" for pub run.

sdk/lib/_internal/pub/test/run/includes_parent_directories_of_entrypoint_test.dart

Index: sdk/lib/_internal/pub/test/run/includes_parent_directories_of_entrypoint_test.dart
diff --git a/sdk/lib/_internal/pub/test/run/includes_parent_directories_of_entrypoint_test.dart b/sdk/lib/_internal/pub/test/run/includes_parent_directories_of_entrypoint_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f938d304f2f29dc8c47aa0fde8f9eeef32e41e27
--- /dev/null
+++ b/sdk/lib/_internal/pub/test/run/includes_parent_directories_of_entrypoint_test.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2014, 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.
+
+import 'package:path/path.dart' as path;
+
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+import 'utils.dart';
+
+const SCRIPT = r"""
+import '../../a.dart';
+import '../b.dart';
+main() {
+  print("$a $b");
+}
+""";
+
+main() {
+  initConfig();
+  integration('allows assets in parent directories of the entrypoint to be'
+      'accessed', () {
+    d.dir(appPath, [
+      d.appPubspec(),
+      d.dir("tool", [
+        d.file("a.dart", "var a = 'a';"),
+        d.dir("a", [
+          d.file("b.dart", "var b = 'b';"),
+          d.dir("b", [
+            d.file("app.dart", SCRIPT)
+          ])
+        ])
+      ])
+    ]).create();
+
+    var pub = pubRun(args: [path.join("tool", "a", "b", "app")]);
+    pub.stdout.expect("a b");
+    pub.shouldExit();
+  });
+}