rust/tests/ui/range.rs

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struct NotARange;
impl NotARange {
fn step_by(&self, _: u32) {}
}
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#[warn(clippy::iterator_step_by_zero, clippy::range_zip_with_len)]
fn main() {
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let _ = (0..1).step_by(0);
// No warning for non-zero step
let _ = (0..1).step_by(1);
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let _ = (1..).step_by(0);
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let _ = (1..=2).step_by(0);
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let x = 0..1;
let _ = x.step_by(0);
// No error, not a range.
let y = NotARange;
y.step_by(0);
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let v1 = vec![1, 2, 3];
let v2 = vec![4, 5];
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let _x = v1.iter().zip(0..v1.len());
let _y = v1.iter().zip(0..v2.len()); // No error
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// check const eval
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let _ = v1.iter().step_by(2 / 3);
}
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#[allow(unused)]
fn no_panic_with_fake_range_types() {
struct Range {
foo: i32,
}
let _ = Range { foo: 0 };
}