1 files changed, 19 insertions, 0 deletions
diff --git a/test/rubygems/test_gem_commands_install_command.rb b/test/rubygems/test_gem_commands_install_command.rb
index 7a58bcd7cb..14bddec485 100644
--- a/test/rubygems/test_gem_commands_install_command.rb
+++ b/test/rubygems/test_gem_commands_install_command.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 require_relative "helper"
+require_relative "test_gem_update_suggestion"
 require "rubygems/commands/install_command"
 require "rubygems/request_set"
 require "rubygems/rdoc"
@@ -1550,4 +1551,22 @@ ERROR:  Possible alternatives: non_existent_with_hint
     assert_equal "  a-3", out.shift
     assert_empty out
   end
+
+  def test_suggest_update_if_enabled
+    TestUpdateSuggestion.with_eglible_environment(cmd: @cmd) do
+      spec_fetcher do |fetcher|
+        fetcher.gem "a", 2
+      end
+
+      @cmd.options[:args] = %w[a]
+
+      use_ui @ui do
+        assert_raise Gem::MockGemUi::SystemExitException, @ui.error do
+          @cmd.execute
+        end
+      end
+
+      assert_includes @ui.output, "A new release of RubyGems is available: 1.2.3 → 2.0.0!"
+    end
+  end
 end