summaryrefslogtreecommitdiffstats
path: root/src/tools/clippy/tests/ui/print.rs
blob: 9ac4b51e1afd9186b92db35ccbf142ce4f8f80bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
#![allow(clippy::print_literal, clippy::write_literal)]
#![warn(clippy::print_stdout, clippy::use_debug)]

use std::fmt::{Debug, Display, Formatter, Result};

#[allow(dead_code)]
struct Foo;

impl Display for Foo {
    fn fmt(&self, f: &mut Formatter) -> Result {
        write!(f, "{:?}", 43.1415)
        //~^ ERROR: use of `Debug`-based formatting
        //~| NOTE: `-D clippy::use-debug` implied by `-D warnings`
    }
}

impl Debug for Foo {
    fn fmt(&self, f: &mut Formatter) -> Result {
        // ok, we can use `Debug` formatting in `Debug` implementations
        write!(f, "{:?}", 42.718)
    }
}

fn main() {
    println!("Hello");
    //~^ ERROR: use of `println!`
    //~| NOTE: `-D clippy::print-stdout` implied by `-D warnings`
    print!("Hello");
    //~^ ERROR: use of `print!`

    print!("Hello {}", "World");
    //~^ ERROR: use of `print!`

    print!("Hello {:?}", "World");
    //~^ ERROR: use of `print!`
    //~| ERROR: use of `Debug`-based formatting

    print!("Hello {:#?}", "#orld");
    //~^ ERROR: use of `print!`
    //~| ERROR: use of `Debug`-based formatting

    assert_eq!(42, 1337);

    vec![1, 2];
}