refactor: move inline tests to separate files via #[path]

crates/adapters/image-converter/src/config.rs

@@ -47,44 +47,5 @@ impl ConversionConfig {
 }
 
 #[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn disabled_by_default() {
-        assert!(ConversionConfig::from_vars(None, None).unwrap().is_none());
-        assert!(ConversionConfig::from_vars(Some("false"), None).unwrap().is_none());
-    }
-
-    #[test]
-    fn enabled_avif() {
-        let cfg = ConversionConfig::from_vars(Some("true"), Some("avif")).unwrap().unwrap();
-        assert_eq!(cfg.format, Format::Avif);
-    }
-
-    #[test]
-    fn enabled_webp() {
-        let cfg = ConversionConfig::from_vars(Some("true"), Some("webp")).unwrap().unwrap();
-        assert_eq!(cfg.format, Format::Webp);
-    }
-
-    #[test]
-    fn unknown_format_is_error() {
-        assert!(ConversionConfig::from_vars(Some("true"), Some("gif")).is_err());
-    }
-
-    #[test]
-    fn missing_format_when_enabled_is_error() {
-        assert!(ConversionConfig::from_vars(Some("true"), None).is_err());
-    }
-
-    #[test]
-    fn avif_extension() {
-        assert_eq!(Format::Avif.extension(), ".avif");
-    }
-
-    #[test]
-    fn webp_extension() {
-        assert_eq!(Format::Webp.extension(), ".webp");
-    }
-}
+#[path = "tests/config.rs"]
+mod tests;