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std/wasi/testdata/std_fs_file_sync_all.rs

Deno standard library
denoland/deno
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// { "preopens": { "/scratch": "scratch" } }
fn main() {  let file = std::fs::File::create("/scratch/file").unwrap();
  assert!(file.set_len(5).is_ok());  assert!(file.sync_all().is_ok());  let metadata = std::fs::metadata("/scratch/file").unwrap();  assert_eq!(metadata.len(), 5);
  assert!(file.set_len(25).is_ok());  assert!(file.sync_all().is_ok());  let metadata = std::fs::metadata("/scratch/file").unwrap();  assert_eq!(metadata.len(), 25);}