Support paths outside of "bin" for pub run.

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

Index: sdk/lib/_internal/pub/test/run/runs_app_in_directory_in_entrypoint_test.dart
diff --git a/sdk/lib/_internal/pub/test/run/runs_app_in_entrypoint_test.dart b/sdk/lib/_internal/pub/test/run/runs_app_in_directory_in_entrypoint_test.dart
similarity index 52%
copy from sdk/lib/_internal/pub/test/run/runs_app_in_entrypoint_test.dart
copy to sdk/lib/_internal/pub/test/run/runs_app_in_directory_in_entrypoint_test.dart
index f9a020922ec9e0d789b905cc999c4c935bd8f0bb..9eea7b63c8a3187f4fcf4d9e7219ab3f5913e6b8 100644
--- a/sdk/lib/_internal/pub/test/run/runs_app_in_entrypoint_test.dart
+++ b/sdk/lib/_internal/pub/test/run/runs_app_in_directory_in_entrypoint_test.dart
@@ -2,33 +2,31 @@
 // 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 = """
-import 'dart:io';
-
-main() {
-  stdout.writeln("stdout output");
-  stderr.writeln("stderr output");
-  exitCode = 123;
-}
-""";
-
 main() {
   initConfig();
   integration('runs a Dart application in the entrypoint package', () {
     d.dir(appPath, [
       d.appPubspec(),
-      d.dir("bin", [
-        d.file("script.dart", SCRIPT)
+      d.dir("tool", [
+        d.file("app.dart", "main() => print('tool');"),
+        d.dir("sub", [
+          d.file("app.dart", "main() => print('sub');")
+        ])
       ])
     ]).create();
 
-    var pub = pubRun(args: ["script"]);
-    pub.stdout.expect("stdout output");
-    pub.stderr.expect("stderr output");
-    pub.shouldExit(123);
+    var pub = pubRun(args: [path.join("tool", "app")]);
+    pub.stdout.expect("tool");
+    pub.shouldExit();
+
+    pub = pubRun(args: [path.join("tool", "sub", "app")]);
+    pub.stdout.expect("sub");
+    pub.shouldExit();
   });
 }