Don't mutate WebhooksHelper parameters#137
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The `is_valid_webhook_event_signature` method would raise an exception if the passed in `signature_key` string was frozen, which it arguably always should be! Enabling frozen string literals in the test file causes most of the tests to fail. The underlying problem was a call to `force_encoding` which does not appear to be necessary; changing the string's encoding this way will not change the underlying bytes, and so should not have any effect on digest calculation. Since I could not find anything in the repository history or issues to explain why the encoding step was there, I removed it.
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The
is_valid_webhook_event_signaturemethod would raise an exception if the passed insignature_keystring was frozen, which it arguably always should be! Enabling frozen string literals in the test file causes most of the tests to fail.The underlying problem was a call to
force_encodingwhich does not appear to be necessary; changing the string's encoding this way will not change the underlying bytes, and so should not have any effect on digest calculation.Since I could not find anything in the repository history or issues to explain why the encoding step was there, I removed it.