110 lines
2.5 KiB
Rust
110 lines
2.5 KiB
Rust
#![warn(clippy::eq_op)]
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#![allow(clippy::double_parens, clippy::identity_op, clippy::nonminimal_bool)]
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#![allow(clippy::suspicious_xor_used_as_pow)]
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fn main() {
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// simple values and comparisons
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let _ = 1 == 1;
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let _ = "no" == "no";
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// even though I agree that no means no ;-)
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let _ = false != false;
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let _ = 1.5 < 1.5;
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let _ = 1u64 >= 1u64;
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let x = f32::NAN;
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let _ = x != x;
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// casts, methods, parentheses
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let _ = (1u32 as u64) & (1u32 as u64);
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#[rustfmt::skip]
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{
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let _ = 1 ^ ((((((1))))));
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};
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// unary and binary operators
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let _ = (-(2) < -(2));
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let _ = ((1 + 1) & (1 + 1) == (1 + 1) & (1 + 1));
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let _ = (1 * 2) + (3 * 4) == 1 * 2 + 3 * 4;
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// various other things
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let _ = ([1] != [1]);
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let _ = ((1, 2) != (1, 2));
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let _ = vec![1, 2, 3] == vec![1, 2, 3]; //no error yet, as we don't match macros
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// const folding
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let _ = 1 + 1 == 2;
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let _ = 1 - 1 == 0;
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let _ = 1 - 1;
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let _ = 1 / 1;
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let _ = true && true;
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let _ = true || true;
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let a: u32 = 0;
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let b: u32 = 0;
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let _ = a == b && b == a;
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let _ = a != b && b != a;
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let _ = a < b && b > a;
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let _ = a <= b && b >= a;
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let mut a = vec![1];
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let _ = a == a;
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let _ = 2 * a.len() == 2 * a.len(); // ok, functions
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let _ = a.pop() == a.pop(); // ok, functions
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check_ignore_macro();
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// named constants
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const A: u32 = 10;
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const B: u32 = 10;
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const C: u32 = A / B; // ok, different named constants
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const D: u32 = A / A;
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}
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macro_rules! check_if_named_foo {
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($expression:expr) => {
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if stringify!($expression) == "foo" {
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println!("foo!");
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} else {
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println!("not foo.");
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}
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};
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}
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macro_rules! bool_macro {
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($expression:expr) => {
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true
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};
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}
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fn check_ignore_macro() {
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check_if_named_foo!(foo);
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// checks if the lint ignores macros with `!` operator
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let _ = !bool_macro!(1) && !bool_macro!("");
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}
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struct Nested {
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inner: ((i32,), (i32,), (i32,)),
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}
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fn check_nested(n1: &Nested, n2: &Nested) -> bool {
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// `n2.inner.0.0` mistyped as `n1.inner.0.0`
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(n1.inner.0).0 == (n1.inner.0).0 && (n1.inner.1).0 == (n2.inner.1).0 && (n1.inner.2).0 == (n2.inner.2).0
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}
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#[test]
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fn eq_op_shouldnt_trigger_in_tests() {
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let a = 1;
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let result = a + 1 == 1 + a;
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assert!(result);
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}
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#[test]
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fn eq_op_macros_shouldnt_trigger_in_tests() {
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let a = 1;
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let b = 2;
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assert_eq!(a, a);
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assert_eq!(a + b, b + a);
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}
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