From f67d0569b493e6a50b8517fcae2f253e53b26511 Mon Sep 17 00:00:00 2001
From: Wei Liu <liuwe@microsoft.com>
Date: Sat, 9 May 2026 00:21:23 +0000
Subject: [PATCH] block: fix `cargo test -p block`

`RawBackend::IoUring` is only available when `io_uring` feature is
defined.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
---
 Cargo.lock            |  1 +
 block/Cargo.toml      |  3 +++
 block/src/raw_disk.rs | 13 +++++++++----
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index aea8920a8..312a258c0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -325,6 +325,7 @@ version = "0.1.0"
 dependencies = [
  "bitflags 2.11.1",
  "byteorder",
+ "cfg-if",
  "crc-any",
  "flate2",
  "io-uring",
diff --git a/block/Cargo.toml b/block/Cargo.toml
index 6183c7337..22ea206de 100644
--- a/block/Cargo.toml
+++ b/block/Cargo.toml
@@ -33,5 +33,8 @@ vm-virtio = { path = "../vm-virtio" }
 vmm-sys-util = { workspace = true }
 zstd = "0.13"
 
+[dev-dependencies]
+cfg-if = { workspace = true }
+
 [lints]
 workspace = true
diff --git a/block/src/raw_disk.rs b/block/src/raw_disk.rs
index a6d3eab5c..82dd3c530 100644
--- a/block/src/raw_disk.rs
+++ b/block/src/raw_disk.rs
@@ -170,10 +170,15 @@ mod unit_tests {
 
     fn assert_async_io_from_dyn(disk: &dyn AsyncDiskFile, expect_backend: RawBackend) {
         let io: Box<dyn AsyncIo> = disk.create_async_io(128).unwrap();
-        assert_eq!(
-            io.batch_requests_enabled(),
-            expect_backend == RawBackend::IoUring
-        );
+        cfg_if::cfg_if! {
+            if #[cfg(feature = "io_uring")] {
+                let expected_batch_requests = expect_backend == RawBackend::IoUring;
+            } else {
+                let _ = expect_backend;
+                let expected_batch_requests = false;
+            }
+        }
+        assert_eq!(io.batch_requests_enabled(), expected_batch_requests);
     }
 
     fn assert_sync_backend(disk: &RawDisk) {