rust-clippy/tests/ui/default_trait_access.rs
Matthias Krüger 435299be30 rustfmt tests
2018-12-09 23:26:16 +01:00

112 lines
2.5 KiB
Rust

// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![warn(clippy::default_trait_access)]
use std::default;
use std::default::Default as D2;
use std::string;
fn main() {
let s1: String = Default::default();
let s2 = String::default();
let s3: String = D2::default();
let s4: String = std::default::Default::default();
let s5 = string::String::default();
let s6: String = default::Default::default();
let s7 = std::string::String::default();
let s8: String = DefaultFactory::make_t_badly();
let s9: String = DefaultFactory::make_t_nicely();
let s10 = DerivedDefault::default();
let s11: GenericDerivedDefault<String> = Default::default();
let s12 = GenericDerivedDefault::<String>::default();
let s13 = TupleDerivedDefault::default();
let s14: TupleDerivedDefault = Default::default();
let s15: ArrayDerivedDefault = Default::default();
let s16 = ArrayDerivedDefault::default();
let s17: TupleStructDerivedDefault = Default::default();
let s18 = TupleStructDerivedDefault::default();
let s19 = <DerivedDefault as Default>::default();
println!(
"[{}] [{}] [{}] [{}] [{}] [{}] [{}] [{}] [{}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}] [{:?}], [{:?}]",
s1,
s2,
s3,
s4,
s5,
s6,
s7,
s8,
s9,
s10,
s11,
s12,
s13,
s14,
s15,
s16,
s17,
s18,
s19,
);
}
struct DefaultFactory;
impl DefaultFactory {
pub fn make_t_badly<T: Default>() -> T {
Default::default()
}
pub fn make_t_nicely<T: Default>() -> T {
T::default()
}
}
#[derive(Debug, Default)]
struct DerivedDefault {
pub s: String,
}
#[derive(Debug, Default)]
struct GenericDerivedDefault<T: Default + std::fmt::Debug> {
pub s: T,
}
#[derive(Debug, Default)]
struct TupleDerivedDefault {
pub s: (String, String),
}
#[derive(Debug, Default)]
struct ArrayDerivedDefault {
pub s: [String; 10],
}
#[derive(Debug, Default)]
struct TupleStructDerivedDefault(String);