httpx.URL catches structurally invalid ports like 'abc'.

#{summary?limit=10&split=---} truncates by character count.

When value fits within limit, no truncation occurs.

webhook.languages=['zh'] allows 'zh' language.

webhook.languages=['zh'] skips 'en' language.

Downstream clients are not instantiated when the first provider succeeds.

Integration: proves base_url is env-expandable end-to-end. This is exactly the use case that keeps private/tenant endpoint URLs out of versio

Analyzer reads favorite_count/retweet_count/reply_count — verify they are set.

#{unknown?limit=5&split=---} with missing key leaves placeholder.

Plain #{date} and parameterized #{summary?...} in same template.

Non-retryable errors should not trigger fallback.

URLs without a hostname raise ValueError.

webhook.languages=None sends for all languages.

#{summary?limit=10&split=---} works inside dict request_body.

#{summary} without params works as before.

Summary containing quotes should be properly serialized.

String JSON body with #{summary} that contains special characters. Note: when request_body is a string, #{summary} is replaced via si

String JSON body where #{summary} has quotes — JSON becomes invalid. This demonstrates the limitation: with string request_body, #{summary}