1 files changed, 100 insertions, 0 deletions
diff --git a/tvix/castore/src/proto/tests/grpc_blobservice.rs b/tvix/castore/src/proto/tests/grpc_blobservice.rs
new file mode 100644
index 000000000000..0d7b340b4409
--- /dev/null
+++ b/tvix/castore/src/proto/tests/grpc_blobservice.rs
@@ -0,0 +1,100 @@
+use crate::fixtures::{BLOB_A, BLOB_A_DIGEST};
+use crate::proto::blob_service_server::BlobService as GRPCBlobService;
+use crate::proto::{BlobChunk, GRPCBlobServiceWrapper, ReadBlobRequest, StatBlobRequest};
+use crate::utils::gen_blob_service;
+use tokio_stream::StreamExt;
+
+fn gen_grpc_blob_service() -> GRPCBlobServiceWrapper {
+    let blob_service = gen_blob_service();
+    GRPCBlobServiceWrapper::from(blob_service)
+}
+
+/// Trying to read a non-existent blob should return a not found error.
+#[tokio::test]
+async fn not_found_read() {
+    let service = gen_grpc_blob_service();
+
+    let resp = service
+        .read(tonic::Request::new(ReadBlobRequest {
+            digest: BLOB_A_DIGEST.clone().into(),
+        }))
+        .await;
+
+    // We can't use unwrap_err here, because the Ok value doesn't implement
+    // debug.
+    if let Err(e) = resp {
+        assert_eq!(e.code(), tonic::Code::NotFound);
+    } else {
+        panic!("resp is not err")
+    }
+}
+
+/// Trying to stat a non-existent blob should return a not found error.
+#[tokio::test]
+async fn not_found_stat() {
+    let service = gen_grpc_blob_service();
+
+    let resp = service
+        .stat(tonic::Request::new(StatBlobRequest {
+            digest: BLOB_A_DIGEST.clone().into(),
+            ..Default::default()
+        }))
+        .await
+        .expect_err("must fail");
+
+    // The resp should be a status with Code::NotFound
+    assert_eq!(resp.code(), tonic::Code::NotFound);
+}
+
+/// Put a blob in the store, get it back.
+#[tokio::test]
+async fn put_read_stat() {
+    let service = gen_grpc_blob_service();
+
+    // Send blob A.
+    let put_resp = service
+        .put(tonic_mock::streaming_request(vec![BlobChunk {
+            data: BLOB_A.clone(),
+        }]))
+        .await
+        .expect("must succeed")
+        .into_inner();
+
+    assert_eq!(BLOB_A_DIGEST.to_vec(), put_resp.digest);
+
+    // Stat for the digest of A.
+    // We currently don't ask for more granular chunking data, as we don't
+    // expose it yet.
+    let _resp = service
+        .stat(tonic::Request::new(StatBlobRequest {
+            digest: BLOB_A_DIGEST.clone().into(),
+            ..Default::default()
+        }))
+        .await
+        .expect("must succeed")
+        .into_inner();
+
+    // Read the blob. It should return the same data.
+    let resp = service
+        .read(tonic::Request::new(ReadBlobRequest {
+            digest: BLOB_A_DIGEST.clone().into(),
+        }))
+        .await;
+
+    let mut rx = resp.ok().unwrap().into_inner();
+
+    // the stream should contain one element, a BlobChunk with the same contents as BLOB_A.
+    let item = rx
+        .next()
+        .await
+        .expect("must be some")
+        .expect("must succeed");
+
+    assert_eq!(BLOB_A.clone(), item.data);
+
+    // … and no more elements
+    assert!(rx.next().await.is_none());
+
+    // TODO: we rely here on the blob being small enough to not get broken up into multiple chunks.
+    // Test with some bigger blob too
+}