121 lines
3.3 KiB
Rust
121 lines
3.3 KiB
Rust
// edition:2021
|
|
// ignore-tidy-linelength
|
|
// only-x86_64
|
|
// run-pass
|
|
// needs-unwind Asserting on contents of error message
|
|
|
|
#![allow(path_statements, unused_allocation)]
|
|
#![feature(core_intrinsics, generic_assert)]
|
|
|
|
macro_rules! test {
|
|
(
|
|
let mut $elem_ident:ident = $elem_expr:expr;
|
|
[ $($assert:tt)* ] => $msg:literal
|
|
) => {
|
|
{
|
|
#[allow(unused_assignments, unused_mut, unused_variables)]
|
|
let rslt = std::panic::catch_unwind(|| {
|
|
let mut $elem_ident = $elem_expr;
|
|
assert!($($assert)*);
|
|
});
|
|
let err = rslt.unwrap_err();
|
|
if let Some(elem) = err.downcast_ref::<String>() {
|
|
assert_eq!(elem, &$msg);
|
|
}
|
|
else if let Some(elem) = err.downcast_ref::<&str>() {
|
|
assert_eq!(elem, &$msg);
|
|
}
|
|
else {
|
|
panic!("assert!( ... ) should return a string");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
macro_rules! tests {
|
|
(
|
|
let mut $elem_ident:ident = $elem_expr:expr;
|
|
|
|
$(
|
|
[ $($elem_assert:tt)* ] => $elem_msg:literal
|
|
)+
|
|
) => {
|
|
$(
|
|
test!(
|
|
let mut $elem_ident = $elem_expr;
|
|
[ $($elem_assert)* ] => $elem_msg
|
|
);
|
|
)+
|
|
}
|
|
}
|
|
|
|
const FOO: Foo = Foo { bar: 1 };
|
|
|
|
|
|
#[derive(Clone, Copy, Debug, PartialEq)]
|
|
struct Foo {
|
|
bar: i32
|
|
}
|
|
|
|
impl Foo {
|
|
fn add(&self, a: i32, b: i32) -> i32 { a + b }
|
|
}
|
|
|
|
fn add(a: i32, b: i32) -> i32 { a + b }
|
|
|
|
fn main() {
|
|
// ***** Allowed *****
|
|
|
|
tests!(
|
|
let mut elem = 1i32;
|
|
|
|
// addr of
|
|
[ &elem == &3 ] => "Assertion failed: &elem == &3\nWith captures:\n elem = 1\n"
|
|
|
|
// array
|
|
[ [elem][0] == 3 ] => "Assertion failed: [elem][0] == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// binary
|
|
[ elem + 1 == 3 ] => "Assertion failed: elem + 1 == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// call
|
|
[ add(elem, elem) == 3 ] => "Assertion failed: add(elem, elem) == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// cast
|
|
[ elem as i32 == 3 ] => "Assertion failed: elem as i32 == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// if
|
|
[ if elem == 3 { true } else { false } ] => "Assertion failed: if elem == 3 { true } else { false }\nWith captures:\n elem = 1\n"
|
|
|
|
// index
|
|
[ [1i32, 1][elem as usize] == 3 ] => "Assertion failed: [1i32, 1][elem as usize] == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// let
|
|
[ if let 3 = elem { true } else { false } ] => "Assertion failed: if let 3 = elem { true } else { false }\nWith captures:\n elem = 1\n"
|
|
|
|
// match
|
|
[ match elem { 3 => true, _ => false, } ] => "Assertion failed: match elem { 3 => true, _ => false, }\nWith captures:\n elem = 1\n"
|
|
|
|
// method call
|
|
[ FOO.add(elem, elem) == 3 ] => "Assertion failed: FOO.add(elem, elem) == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// paren
|
|
[ (elem) == 3 ] => "Assertion failed: (elem) == 3\nWith captures:\n elem = 1\n"
|
|
|
|
// range
|
|
[ (0..elem) == (0..3) ] => "Assertion failed: (0..elem) == (0..3)\nWith captures:\n elem = 1\n"
|
|
|
|
// repeat
|
|
[ [elem; 1] == [3; 1] ] => "Assertion failed: [elem; 1] == [3; 1]\nWith captures:\n elem = 1\n"
|
|
|
|
// struct
|
|
[ Foo { bar: elem } == Foo { bar: 3 } ] => "Assertion failed: Foo { bar: elem } == Foo { bar: 3 }\nWith captures:\n elem = 1\n"
|
|
|
|
// tuple
|
|
[ (elem, 1) == (3, 3) ] => "Assertion failed: (elem, 1) == (3, 3)\nWith captures:\n elem = 1\n"
|
|
|
|
// unary
|
|
[ -elem == -3 ] => "Assertion failed: -elem == -3\nWith captures:\n elem = 1\n"
|
|
);
|
|
}
|