Make the test file non-empty.

bytecodealliance · Jul 31, 2023 · 4adad49 · 4adad49
1 parent 2f23420
commit 4adad49
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/tests/fs/fcntl.rs b/tests/fs/fcntl.rs
@@ -31,6 +31,10 @@ fn test_fcntl_apple() {
  )
  .unwrap();
 
+ // It appears `fsync_rdadvise` at offset 0 length 0 doesn't work if the
+ // file has size zero, so write in some bytes.
+ assert_eq!(rustix::io::write(&foo, b"data").expect("write"), 4, "write failed");
+
  rustix::fs::fcntl_rdadvise(&foo, 0, 0).unwrap();
  rustix::fs::fcntl_fullfsync(&foo).unwrap();
  rustix::fs::fcntl_nocache(&foo, true).unwrap();