Don't allow running global executables outside of bin.

sdk/lib/_internal/pub/test/global/run/errors_if_outside_bin_test.dart

Index: sdk/lib/_internal/pub/test/global/run/errors_if_outside_bin_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/run/runs_script_test.dart b/sdk/lib/_internal/pub/test/global/run/errors_if_outside_bin_test.dart
similarity index 55%
copy from sdk/lib/_internal/pub/test/global/run/runs_script_test.dart
copy to sdk/lib/_internal/pub/test/global/run/errors_if_outside_bin_test.dart
index 217758f26c34cecdc342d1cf6ecf6a42178e0d30..ff137837bdaf2440d665b4128332e0a78870947d 100644
--- a/sdk/lib/_internal/pub/test/global/run/runs_script_test.dart
+++ b/sdk/lib/_internal/pub/test/global/run/errors_if_outside_bin_test.dart
@@ -2,25 +2,33 @@
 // 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 p;
+
 import '../../../lib/src/exit_codes.dart' as exit_codes;
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   initConfig();
-  integration('runs a script in an activated package', () {
+  integration('errors if the script is in a subdirectory.', () {
     servePackages([
       packageMap("foo", "1.0.0")
     ], contents: [
-      d.dir("bin", [
+      d.dir("example", [
         d.file("script.dart", "main(args) => print('ok');")
       ])
     ]);
 
     schedulePub(args: ["global", "activate", "foo"]);
+    schedulePub(args: ["global", "run", "foo", "example/script"],
+        error: """
+Cannot run an executable in a subdirectory of a global package.
+
+Usage: pub global run <package> <executable> [args...]
+-h, --help    Print usage information for this command.
 
-    var pub = pubRun(global: true, args: ["foo", "script"]);
-    pub.stdout.expect("ok");
-    pub.shouldExit();
+Run "pub help" to see global options.
+""",
+        exitCode: exit_codes.USAGE);
   });
 }