515fe65ba8
- New ineffective_open_options had to be fixed. - Now not raising an issue on missing `truncate` when `append(true)` makes the intent clear. - Try implementing more advanced tests for non-chained operations. Fail
49 lines
1.2 KiB
Rust
49 lines
1.2 KiB
Rust
#![warn(clippy::ineffective_open_options)]
|
|
|
|
use std::fs::OpenOptions;
|
|
|
|
fn main() {
|
|
let file = OpenOptions::new()
|
|
.create(true)
|
|
.write(true) //~ ERROR: unnecessary use of `.write(true)`
|
|
.append(true)
|
|
.open("dump.json")
|
|
.unwrap();
|
|
|
|
let file = OpenOptions::new()
|
|
.create(true)
|
|
.append(true)
|
|
.write(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();
|
|
}
|