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denoland-deno/std/wasi/testdata/std_fs_file_set_len.rs

17 lines
468 B
Rust

// { "preopens": { "/scratch": "scratch" } }
fn main() {
let file = std::fs::File::create("/scratch/file").unwrap();
assert!(file.set_len(0).is_ok());
assert_eq!(file.metadata().unwrap().len(), 0);
assert!(file.set_len(5).is_ok());
assert_eq!(file.metadata().unwrap().len(), 5);
assert!(file.set_len(25).is_ok());
assert_eq!(file.metadata().unwrap().len(), 25);
assert!(file.set_len(0).is_ok());
assert_eq!(file.metadata().unwrap().len(), 0);
}