rust/tests/ui/search_is_some.rs

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//@aux-build:option_helpers.rs
#![warn(clippy::search_is_some)]
#![allow(clippy::manual_pattern_char_comparison)]
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#![allow(clippy::useless_vec)]
#![allow(dead_code)]
extern crate option_helpers;
use option_helpers::IteratorFalsePositives;
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//@no-rustfix
#[rustfmt::skip]
fn main() {
let v = vec![3, 2, 1, 0, -1, -2, -3];
let y = &&42;
// Check `find().is_some()`, multi-line case.
let _ = v.iter().find(|&x| {
*x < 0
}
).is_some();
// Check `position().is_some()`, multi-line case.
let _ = v.iter().position(|&x| {
x < 0
}
).is_some();
// Check `rposition().is_some()`, multi-line case.
let _ = v.iter().rposition(|&x| {
x < 0
}
).is_some();
// Check that we don't lint if the caller is not an `Iterator` or string
let falsepos = IteratorFalsePositives { foo: 0 };
let _ = falsepos.find().is_some();
let _ = falsepos.position().is_some();
let _ = falsepos.rposition().is_some();
// check that we don't lint if `find()` is called with
// `Pattern` that is not a string
let _ = "hello world".find(|c: char| c == 'o' || c == 'l').is_some();
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let some_closure = |x: &u32| *x == 0;
let _ = (0..1).find(some_closure).is_some();
}
#[rustfmt::skip]
fn is_none() {
let v = vec![3, 2, 1, 0, -1, -2, -3];
let y = &&42;
// Check `find().is_none()`, multi-line case.
let _ = v.iter().find(|&x| {
*x < 0
}
).is_none();
// Check `position().is_none()`, multi-line case.
let _ = v.iter().position(|&x| {
x < 0
}
).is_none();
// Check `rposition().is_none()`, multi-line case.
let _ = v.iter().rposition(|&x| {
x < 0
}
).is_none();
// Check that we don't lint if the caller is not an `Iterator` or string
let falsepos = IteratorFalsePositives { foo: 0 };
let _ = falsepos.find().is_none();
let _ = falsepos.position().is_none();
let _ = falsepos.rposition().is_none();
// check that we don't lint if `find()` is called with
// `Pattern` that is not a string
let _ = "hello world".find(|c: char| c == 'o' || c == 'l').is_none();
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let some_closure = |x: &u32| *x == 0;
let _ = (0..1).find(some_closure).is_none();
}