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-rw-r--r--actionpack/test/controller/test_case_test.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/actionpack/test/controller/test_case_test.rb b/actionpack/test/controller/test_case_test.rb
index 7d4850294d..d1122abba6 100644
--- a/actionpack/test/controller/test_case_test.rb
+++ b/actionpack/test/controller/test_case_test.rb
@@ -740,6 +740,14 @@ XML
assert_equal "application/json", @response.body
end
+ def test_request_format_kwarg_doesnt_mutate_params
+ params = { foo: "bar" }.freeze
+
+ assert_nothing_raised do
+ get :test_format, format: "json", params: params
+ end
+ end
+
def test_should_have_knowledge_of_client_side_cookie_state_even_if_they_are_not_set
cookies["foo"] = "bar"
get :no_op