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-rw-r--r--actionpack/test/abstract_unit.rb6
1 files changed, 5 insertions, 1 deletions
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 2d7b5f2af6..e47570823f 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -9,7 +9,11 @@ require 'action_controller'
require 'action_controller/cgi_ext'
require 'action_controller/test_process'
-require 'ruby-debug'
+begin
+ require 'ruby-debug'
+rescue LoadError
+ # Debugging disabled. `gem install ruby-debug` to enable.
+end
# Show backtraces for deprecated behavior for quicker cleanup.
ActiveSupport::Deprecation.debug = true