1 files changed, 16 insertions, 0 deletions
diff --git a/spec/bundler/bundled_gems_spec.rb b/spec/bundler/bundled_gems_spec.rb
index 7cc830e2c8..0beed30244 100644
--- a/spec/bundler/bundled_gems_spec.rb
+++ b/spec/bundler/bundled_gems_spec.rb
@@ -22,4 +22,20 @@ RSpec.describe "bundled_gems.rb" do
     expect(err).to include(/csv was loaded from (.*) from Ruby 3.4.0/)
     expect(err).to include(/ostruct was loaded from (.*) from Ruby 3.5.0/)
   end
+
+  it "Show warning dash gem like net/smtp" do
+    script <<-RUBY
+      gemfile do
+        source "https://rubygems.org"
+      end
+
+      begin
+        require "net/smtp"
+      rescue LoadError
+      end
+    RUBY
+
+    expect(err).to include(/net\/smtp was loaded from (.*) from Ruby 3.1.0/)
+    expect(err).to include("You can add net-smtp")
+  end
 end