rust/library/core/tests/num/ops.rs
Philippe Laflamme 64d695b753
Adds tests to ensure some base op traits exist.
These tests invoke the various op traits using all accepted types they
are implemented for as well as for references to those types.

This fixes #49660 and ensures the following implementations exist:

* `Add`, `Sub`, `Mul`, `Div`, `Rem`
  * `T op T`, `T op &T`, `&T op T` and `&T op &T`
  * for all integer and floating point types
* `AddAssign`, `SubAssign`, `MulAssign`, `DivAssign`, `RemAssign`
  * `&mut T op T` and `&mut T op &T`
  * for all integer and floating point types
* `Neg`
  * `op T` and `op &T`
  * for all signed integer and floating point types
* `Not`
  * `op T` and `op &T`
  * for `bool`
* `BitAnd`, `BitOr`, `BitXor`
  * `T op T`, `T op &T`, `&T op T` and `&T op &T`
  * for all integer types and bool
* `BitAndAssign`, `BitOrAssign`, `BitXorAssign`
  * `&mut T op T` and `&mut T op &T`
  * for all integer types and bool
* `Shl`, `Shr`
  * `L op R`, `L op &R`, `&L op R` and `&L op &R`
  * for all pairs of integer types
* `ShlAssign`, `ShrAssign`
  * `&mut L op R`, `&mut L op &R`
  * for all pairs of integer types
2021-01-13 23:14:00 -05:00

245 lines
8.2 KiB
Rust

use core::ops::*;
// For types L and R, checks that a trait implementation exists for
// * binary ops: L op R, L op &R, &L op R and &L op &R
// * assign ops: &mut L op R, &mut L op &R
macro_rules! impl_defined {
($op:ident, $method:ident($lhs:literal, $rhs:literal), $result:literal, $lt:ty, $rt:ty) => {
let lhs = $lhs as $lt;
let rhs = $rhs as $rt;
assert_eq!($result as $lt, $op::$method(lhs, rhs));
assert_eq!($result as $lt, $op::$method(lhs, &rhs));
assert_eq!($result as $lt, $op::$method(&lhs, rhs));
assert_eq!($result as $lt, $op::$method(&lhs, &rhs));
};
($op:ident, $method:ident(&mut $lhs:literal, $rhs:literal), $result:literal, $lt:ty, $rt:ty) => {
let rhs = $rhs as $rt;
let mut lhs = $lhs as $lt;
$op::$method(&mut lhs, rhs);
assert_eq!($result as $lt, lhs);
let mut lhs = $lhs as $lt;
$op::$method(&mut lhs, &rhs);
assert_eq!($result as $lt, lhs);
};
}
// For all specified types T, checks that a trait implementation exists for
// * binary ops: T op T, T op &T, &T op T and &T op &T
// * assign ops: &mut T op T, &mut T op &T
// * unary ops: op T and op &T
macro_rules! impls_defined {
($op:ident, $method:ident($lhs:literal, $rhs:literal), $result:literal, $($t:ty),+) => {$(
impl_defined!($op, $method($lhs, $rhs), $result, $t, $t);
)+};
($op:ident, $method:ident(&mut $lhs:literal, $rhs:literal), $result:literal, $($t:ty),+) => {$(
impl_defined!($op, $method(&mut $lhs, $rhs), $result, $t, $t);
)+};
($op:ident, $method:ident($operand:literal), $result:literal, $($t:ty),+) => {$(
let operand = $operand as $t;
assert_eq!($result as $t, $op::$method(operand));
assert_eq!($result as $t, $op::$method(&operand));
)+};
}
macro_rules! test_op {
($fn_name:ident, $op:ident::$method:ident($lhs:literal, $rhs:literal), $result:literal, $($t:ty),+) => {
#[test]
fn $fn_name() {
impls_defined!($op, $method($lhs, $rhs), $result, $($t),+);
}
};
($fn_name:ident, $op:ident::$method:ident(&mut $lhs:literal, $rhs:literal), $result:literal, $($t:ty),+) => {
#[test]
fn $fn_name() {
impls_defined!($op, $method(&mut $lhs, $rhs), $result, $($t),+);
}
};
($fn_name:ident, $op:ident::$method:ident($lhs:literal), $result:literal, $($t:ty),+) => {
#[test]
fn $fn_name() {
impls_defined!($op, $method($lhs), $result, $($t),+);
}
};
}
test_op!(test_neg_defined, Neg::neg(0), 0, i8, i16, i32, i64, f32, f64);
#[cfg(not(target_os = "emscripten"))]
test_op!(test_neg_defined_128, Neg::neg(0), 0, i128);
test_op!(test_not_defined_bool, Not::not(true), false, bool);
macro_rules! test_arith_op {
($fn_name:ident, $op:ident::$method:ident($lhs:literal, $rhs:literal)) => {
#[test]
fn $fn_name() {
impls_defined!(
$op,
$method($lhs, $rhs),
0,
i8,
i16,
i32,
i64,
isize,
u8,
u16,
u32,
u64,
usize,
f32,
f64
);
#[cfg(not(target_os = "emscripten"))]
impls_defined!($op, $method($lhs, $rhs), 0, i128, u128);
}
};
($fn_name:ident, $op:ident::$method:ident(&mut $lhs:literal, $rhs:literal)) => {
#[test]
fn $fn_name() {
impls_defined!(
$op,
$method(&mut $lhs, $rhs),
0,
i8,
i16,
i32,
i64,
isize,
u8,
u16,
u32,
u64,
usize,
f32,
f64
);
#[cfg(not(target_os = "emscripten"))]
impls_defined!($op, $method(&mut $lhs, $rhs), 0, i128, u128);
}
};
}
test_arith_op!(test_add_defined, Add::add(0, 0));
test_arith_op!(test_add_assign_defined, AddAssign::add_assign(&mut 0, 0));
test_arith_op!(test_sub_defined, Sub::sub(0, 0));
test_arith_op!(test_sub_assign_defined, SubAssign::sub_assign(&mut 0, 0));
test_arith_op!(test_mul_defined, Mul::mul(0, 0));
test_arith_op!(test_mul_assign_defined, MulAssign::mul_assign(&mut 0, 0));
test_arith_op!(test_div_defined, Div::div(0, 1));
test_arith_op!(test_div_assign_defined, DivAssign::div_assign(&mut 0, 1));
test_arith_op!(test_rem_defined, Rem::rem(0, 1));
test_arith_op!(test_rem_assign_defined, RemAssign::rem_assign(&mut 0, 1));
macro_rules! test_bitop {
($test_name:ident, $op:ident::$method:ident) => {
#[test]
fn $test_name() {
impls_defined!(
$op,
$method(0, 0),
0,
i8,
i16,
i32,
i64,
isize,
u8,
u16,
u32,
u64,
usize
);
#[cfg(not(target_os = "emscripten"))]
impls_defined!($op, $method(0, 0), 0, i128, u128);
impls_defined!($op, $method(false, false), false, bool);
}
};
}
macro_rules! test_bitop_assign {
($test_name:ident, $op:ident::$method:ident) => {
#[test]
fn $test_name() {
impls_defined!(
$op,
$method(&mut 0, 0),
0,
i8,
i16,
i32,
i64,
isize,
u8,
u16,
u32,
u64,
usize
);
#[cfg(not(target_os = "emscripten"))]
impls_defined!($op, $method(&mut 0, 0), 0, i128, u128);
impls_defined!($op, $method(&mut false, false), false, bool);
}
};
}
test_bitop!(test_bitand_defined, BitAnd::bitand);
test_bitop_assign!(test_bitand_assign_defined, BitAndAssign::bitand_assign);
test_bitop!(test_bitor_defined, BitOr::bitor);
test_bitop_assign!(test_bitor_assign_defined, BitOrAssign::bitor_assign);
test_bitop!(test_bitxor_defined, BitXor::bitxor);
test_bitop_assign!(test_bitxor_assign_defined, BitXorAssign::bitxor_assign);
macro_rules! test_shift_inner {
($op:ident::$method:ident, $lt:ty, $($rt:ty),+) => {
$(impl_defined!($op, $method(0,0), 0, $lt, $rt);)+
};
($op:ident::$method:ident, $lt:ty) => {
test_shift_inner!($op::$method, $lt, i8, i16, i32, i64, isize, u8, u16, u32, u64, usize);
#[cfg(not(target_os = "emscripten"))]
test_shift_inner!($op::$method, $lt, i128, u128);
};
}
macro_rules! test_shift {
($op:ident::$method:ident, $($lt:ty),+) => {
$(test_shift_inner!($op::$method, $lt);)+
};
($test_name:ident, $op:ident::$method:ident) => {
#[test]
fn $test_name() {
test_shift!($op::$method, i8, i16, i32, i64, isize, u8, u16, u32, u64, usize);
#[cfg(not(target_os = "emscripten"))]
test_shift!($op::$method, i128, u128);
}
};
}
macro_rules! test_shift_assign_inner {
($op:ident::$method:ident, $lt:ty, $($rt:ty),+) => {
$(impl_defined!($op, $method(&mut 0,0), 0, $lt, $rt);)+
};
($op:ident::$method:ident, $lt:ty) => {
test_shift_assign_inner!($op::$method, $lt, i8, i16, i32, i64, isize, u8, u16, u32, u64, usize);
#[cfg(not(target_os = "emscripten"))]
test_shift_assign_inner!($op::$method, $lt, i128, u128);
};
}
macro_rules! test_shift_assign {
($op:ident::$method:ident, $($lt:ty),+) => {
$(test_shift_assign_inner!($op::$method, $lt);)+
};
($test_name:ident, $op:ident::$method:ident) => {
#[test]
fn $test_name() {
test_shift_assign!($op::$method, i8, i16, i32, i64, isize, u8, u16, u32, u64, usize);
#[cfg(not(target_os = "emscripten"))]
test_shift_assign!($op::$method, i128, u128);
}
};
}
test_shift!(test_shl_defined, Shl::shl);
test_shift_assign!(test_shl_assign_defined, ShlAssign::shl_assign);
test_shift!(test_shr_defined, Shr::shr);
test_shift_assign!(test_shr_assign_defined, ShrAssign::shr_assign);