rust-clippy/tests/ui/ineffective_open_options.fixed

48 lines
1.2 KiB
Rust

#![warn(clippy::ineffective_open_options)]
use std::fs::OpenOptions;
fn main() {
let file = OpenOptions::new()
.create(true)
//~ ERROR: unnecessary use of `.write(true)`
.append(true)
.open("dump.json")
.unwrap();
let file = OpenOptions::new()
.create(true)
.append(true)
//~ ERROR: unnecessary use of `.write(true)`
.open("dump.json")
.unwrap();
// All the next calls are ok.
let file = OpenOptions::new()
.create(true)
.write(false)
.append(true)
.open("dump.json")
.unwrap();
let file = OpenOptions::new()
.create(true)
.truncate(true)
.write(true)
.append(false)
.open("dump.json")
.unwrap();
let file = OpenOptions::new()
.create(true)
.truncate(true)
.write(false)
.append(false)
.open("dump.json")
.unwrap();
let file = OpenOptions::new().create(true).append(true).open("dump.json").unwrap();
let file = OpenOptions::new()
.create(true)
.truncate(true)
.write(true)
.open("dump.json")
.unwrap();
}