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-rw-r--r--actionpack/lib/action_dispatch/testing/test_response.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/testing/test_response.rb b/actionpack/lib/action_dispatch/testing/test_response.rb
index 82039e72e7..369ea1467c 100644
--- a/actionpack/lib/action_dispatch/testing/test_response.rb
+++ b/actionpack/lib/action_dispatch/testing/test_response.rb
@@ -25,5 +25,12 @@ module ActionDispatch
# Was there a server-side error?
alias_method :error?, :server_error?
+
+ def merge_default_headers(original, *args)
+ # Default headers are already applied, no need to merge them a second time.
+ # This makes sure that default headers, removed in controller actions, will
+ # not be reapplied to the test response.
+ original
+ end
end
end