added device support

crates/proton-drive-rs/src/node.rs

@@ -138,11 +138,21 @@ pub struct Thumbnail {
 
 impl Thumbnail {
     /// Create a thumbnail from rendered image bytes.
-    pub fn new(thumbnail_type: ThumbnailType, content: Vec<u8>) -> Self {
-        Self {
+    ///
+    /// Returns an error if the `content` is empty.
+    pub fn new(
+        thumbnail_type: ThumbnailType,
+        content: Vec<u8>,
+    ) -> Result<Self, proton_sdk::error::ProtonError> {
+        if content.is_empty() {
+            return Err(proton_sdk::error::ProtonError::invalid_operation(
+                "Thumbnail content must not be empty.",
+            ));
+        }
+        Ok(Self {
             thumbnail_type,
             content,
-        }
+        })
     }
 }
 

crates/proton-drive-rs/tests/live_transfer_ops.rs

@@ -260,8 +260,8 @@ async fn thumbnails_upload_and_fetch() {
     let thumb_small: Vec<u8> = (0..4096).map(|i| (i * 13 + 1) as u8).collect();
     let thumb_preview: Vec<u8> = (0..8192).map(|i| (i * 17 + 3) as u8).collect();
     let thumbnails = vec![
-        Thumbnail::new(ThumbnailType::Thumbnail, thumb_small.clone()),
-        Thumbnail::new(ThumbnailType::Preview, thumb_preview.clone()),
+        Thumbnail::new(ThumbnailType::Thumbnail, thumb_small.clone()).unwrap(),
+        Thumbnail::new(ThumbnailType::Preview, thumb_preview.clone()).unwrap(),
     ];
 
     let payload = b"file body for thumbnail upload".to_vec();