Create binstubs for executables when activating a package.

sdk/lib/_internal/pub/test/global/binstubs/no_executables_flag_test.dart

Index: sdk/lib/_internal/pub/test/global/binstubs/no_executables_flag_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/run/missing_path_package_test.dart b/sdk/lib/_internal/pub/test/global/binstubs/no_executables_flag_test.dart
similarity index 50%
copy from sdk/lib/_internal/pub/test/global/run/missing_path_package_test.dart
copy to sdk/lib/_internal/pub/test/global/binstubs/no_executables_flag_test.dart
index a8be8c81617c018cbd40b451ccd877e85ec0e810..0f7816a4d3edcac20085c1a05657e26a2b373e24 100644
--- a/sdk/lib/_internal/pub/test/global/run/missing_path_package_test.dart
+++ b/sdk/lib/_internal/pub/test/global/binstubs/no_executables_flag_test.dart
@@ -2,30 +2,37 @@
 // 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 'package:scheduled_test/scheduled_test.dart';
 
-import '../../../lib/src/io.dart';
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   initConfig();
-  integration('errors if the local package does not exist', () {
+  integration("does not create binstubs if --no-executables is passed", () {
     d.dir("foo", [
-      d.libPubspec("foo", "1.0.0"),
+      d.pubspec({
+        "name": "foo",
+        "executables": {
+          "one": null
+        }
+      }),
       d.dir("bin", [
-        d.file("foo.dart", "main() => print('ok');")
+        d.file("one.dart", "main() => print('ok');")
       ])
     ]).create();
 
     schedulePub(args: ["global", "activate", "--source", "path", "../foo"]);
 
-    schedule(() => deleteEntry(p.join(sandboxDir, "foo")));
+    schedulePub(args: [
+      "global", "activate", "--source", "path", "../foo", "--no-executables"
+    ]);
 
-    var pub = pubRun(global: true, args: ["foo"]);
-    var path = canonicalize(p.join(sandboxDir, "foo"));
-    pub.stderr.expect('Could not find a file named "pubspec.yaml" in "$path".');
-    pub.shouldExit(1);
+    // Should still delete old one.
+    d.dir(cachePath, [
+      d.dir("bin", [
+        d.nothing("one")
+      ])
+    ]).validate();
   });
 }