Function builder_error

datafusion/datasource/src/file_stream/mod.rs:366–368

Convenience helper to keep builder error assertions focused on the specific missing or invalid input under test.

(builder: FileStreamBuilder<'_>)

    /// Convenience helper to keep builder error assertions focused on the
    /// specific missing or invalid input under test.
    fn builder_error(builder: FileStreamBuilder<'_>) -> String {
        builder.build().err().unwrap().to_string()
    }

    #[tokio::test]
    async fn on_error_opening() -> Result<()> {