Debug for sporadical failures on RubyCI

1 files changed, 7 insertions, 1 deletions

diff --git a/test/rubygems/test_gem_command_manager.rb b/test/rubygems/test_gem_command_manager.rb
index eeda4d94cf..fbf35b8eb9 100644
--- a/test/rubygems/test_gem_command_manager.rb
+++ b/test/rubygems/test_gem_command_manager.rb
@@ -89,7 +89,13 @@ class TestGemCommandManager < Gem::TestCase
       actual_message = e.message
     end
 
-    assert_equal message, actual_message
+    assert_equal message, actual_message, proc {|msg|
+      msg + {
+         unknown_command: e.unknown_command,
+        spell_checker: e.spell_checker,
+        corrections: e.corrections,
+      }.pretty_inspect
+    }
   end
 
   def test_run_interrupt