rust/tests/ui/manual_map_option.rs
2021-02-21 23:15:28 -05:00

123 lines
2.4 KiB
Rust

// run-rustfix
#![warn(clippy::manual_map)]
#![allow(clippy::no_effect, clippy::map_identity, clippy::unit_arg, clippy::match_ref_pats)]
fn main() {
match Some(0) {
Some(_) => Some(2),
None::<u32> => None,
};
match Some(0) {
Some(x) => Some(x + 1),
_ => None,
};
match Some("") {
Some(x) => Some(x.is_empty()),
None => None,
};
if let Some(x) = Some(0) {
Some(!x)
} else {
None
};
#[rustfmt::skip]
match Some(0) {
Some(x) => { Some(std::convert::identity(x)) }
None => { None }
};
match Some(&String::new()) {
Some(x) => Some(str::len(x)),
None => None,
};
match Some(0) {
Some(x) if false => Some(x + 1),
_ => None,
};
match &Some([0, 1]) {
Some(x) => Some(x[0]),
&None => None,
};
match &Some(0) {
&Some(x) => Some(x * 2),
None => None,
};
match Some(String::new()) {
Some(ref x) => Some(x.is_empty()),
_ => None,
};
match &&Some(String::new()) {
Some(x) => Some(x.len()),
_ => None,
};
match &&Some(0) {
&&Some(x) => Some(x + x),
&&_ => None,
};
#[warn(clippy::option_map_unit_fn)]
match &mut Some(String::new()) {
Some(x) => Some(x.push_str("")),
None => None,
};
#[allow(clippy::option_map_unit_fn)]
{
match &mut Some(String::new()) {
Some(x) => Some(x.push_str("")),
None => None,
};
}
match &mut Some(String::new()) {
Some(ref x) => Some(x.len()),
None => None,
};
match &mut &Some(String::new()) {
Some(x) => Some(x.is_empty()),
&mut _ => None,
};
match Some((0, 1, 2)) {
Some((x, y, z)) => Some(x + y + z),
None => None,
};
match Some([1, 2, 3]) {
Some([first, ..]) => Some(first),
None => None,
};
match &Some((String::new(), "test")) {
Some((x, y)) => Some((y, x)),
None => None,
};
match Some((String::new(), 0)) {
Some((ref x, y)) => Some((y, x)),
None => None,
};
match Some(Some(0)) {
Some(Some(_)) | Some(None) => Some(0),
None => None,
};
match Some(Some((0, 1))) {
Some(Some((x, 1))) => Some(x),
_ => None,
};
}