Added test example for binstub warning

1 files changed, 19 insertions, 0 deletions

diff --git a/spec/commands/binstubs_spec.rb b/spec/commands/binstubs_spec.rb
index d78ad50b61..24ee03ec3c 100644
--- a/spec/commands/binstubs_spec.rb
+++ b/spec/commands/binstubs_spec.rb
@@ -50,6 +50,25 @@ RSpec.describe "bundle binstubs <gem>" do
       expect(out).to include("`bundle binstubs` needs at least one gem to run.")
     end
 
+    context "when generating bundle binstub outside bundler" do
+      it "should abort" do
+        install_gemfile <<-G
+          source "file://#{gem_repo1}"
+          gem "rack"
+        G
+
+        bundle "binstubs rack"
+
+        File.open("bin/bundle", "wb") do |file|
+          file.print "OMG"
+        end
+
+        sys_exec "bin/rackup"
+
+        expect(last_command.stderr).to include("was not generated by Bundler")
+      end
+    end
+
     context "the bundle binstub" do
       before do
         if system_bundler_version == :bundler