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-rw-r--r--spec/support/helpers/stub_env.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/spec/support/helpers/stub_env.rb b/spec/support/helpers/stub_env.rb
index 1c2f474a015..8107ffc939f 100644
--- a/spec/support/helpers/stub_env.rb
+++ b/spec/support/helpers/stub_env.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
# Inspired by https://github.com/ljkbennett/stub_env/blob/master/lib/stub_env/helpers.rb
module StubENV
def stub_env(key_or_hash, value = nil)