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-rw-r--r--vendor/num-traits/tests/cast.rs387
1 files changed, 0 insertions, 387 deletions
diff --git a/vendor/num-traits/tests/cast.rs b/vendor/num-traits/tests/cast.rs
deleted file mode 100644
index 4f01d74..0000000
--- a/vendor/num-traits/tests/cast.rs
+++ /dev/null
@@ -1,387 +0,0 @@
-//! Tests of `num_traits::cast`.
-
-#![cfg_attr(not(feature = "std"), no_std)]
-
-use num_traits::cast::*;
-use num_traits::Bounded;
-
-use core::{f32, f64};
-use core::{i128, i16, i32, i64, i8, isize};
-use core::{u128, u16, u32, u64, u8, usize};
-
-use core::fmt::Debug;
-use core::mem;
-use core::num::Wrapping;
-
-#[test]
-fn to_primitive_float() {
- let f32_toolarge = 1e39f64;
- assert_eq!(f32_toolarge.to_f32(), Some(f32::INFINITY));
- assert_eq!((-f32_toolarge).to_f32(), Some(f32::NEG_INFINITY));
- assert_eq!((f32::MAX as f64).to_f32(), Some(f32::MAX));
- assert_eq!((-f32::MAX as f64).to_f32(), Some(-f32::MAX));
- assert_eq!(f64::INFINITY.to_f32(), Some(f32::INFINITY));
- assert_eq!((f64::NEG_INFINITY).to_f32(), Some(f32::NEG_INFINITY));
- assert!((f64::NAN).to_f32().map_or(false, |f| f.is_nan()));
-}
-
-#[test]
-fn wrapping_to_primitive() {
- macro_rules! test_wrapping_to_primitive {
- ($($t:ty)+) => {
- $({
- let i: $t = 0;
- let w = Wrapping(i);
- assert_eq!(i.to_u8(), w.to_u8());
- assert_eq!(i.to_u16(), w.to_u16());
- assert_eq!(i.to_u32(), w.to_u32());
- assert_eq!(i.to_u64(), w.to_u64());
- assert_eq!(i.to_usize(), w.to_usize());
- assert_eq!(i.to_i8(), w.to_i8());
- assert_eq!(i.to_i16(), w.to_i16());
- assert_eq!(i.to_i32(), w.to_i32());
- assert_eq!(i.to_i64(), w.to_i64());
- assert_eq!(i.to_isize(), w.to_isize());
- assert_eq!(i.to_f32(), w.to_f32());
- assert_eq!(i.to_f64(), w.to_f64());
- })+
- };
- }
-
- test_wrapping_to_primitive!(usize u8 u16 u32 u64 isize i8 i16 i32 i64);
-}
-
-#[test]
-fn wrapping_is_toprimitive() {
- fn require_toprimitive<T: ToPrimitive>(_: &T) {}
- require_toprimitive(&Wrapping(42));
-}
-
-#[test]
-fn wrapping_is_fromprimitive() {
- fn require_fromprimitive<T: FromPrimitive>(_: &T) {}
- require_fromprimitive(&Wrapping(42));
-}
-
-#[test]
-fn wrapping_is_numcast() {
- fn require_numcast<T: NumCast>(_: &T) {}
- require_numcast(&Wrapping(42));
-}
-
-#[test]
-fn as_primitive() {
- let x: f32 = (1.625f64).as_();
- assert_eq!(x, 1.625f32);
-
- let x: f32 = (3.14159265358979323846f64).as_();
- assert_eq!(x, 3.1415927f32);
-
- let x: u8 = (768i16).as_();
- assert_eq!(x, 0);
-}
-
-#[test]
-fn float_to_integer_checks_overflow() {
- // This will overflow an i32
- let source: f64 = 1.0e+123f64;
-
- // Expect the overflow to be caught
- assert_eq!(cast::<f64, i32>(source), None);
-}
-
-#[test]
-fn cast_to_int_checks_overflow() {
- let big_f: f64 = 1.0e123;
- let normal_f: f64 = 1.0;
- let small_f: f64 = -1.0e123;
- assert_eq!(None, cast::<f64, isize>(big_f));
- assert_eq!(None, cast::<f64, i8>(big_f));
- assert_eq!(None, cast::<f64, i16>(big_f));
- assert_eq!(None, cast::<f64, i32>(big_f));
- assert_eq!(None, cast::<f64, i64>(big_f));
-
- assert_eq!(Some(normal_f as isize), cast::<f64, isize>(normal_f));
- assert_eq!(Some(normal_f as i8), cast::<f64, i8>(normal_f));
- assert_eq!(Some(normal_f as i16), cast::<f64, i16>(normal_f));
- assert_eq!(Some(normal_f as i32), cast::<f64, i32>(normal_f));
- assert_eq!(Some(normal_f as i64), cast::<f64, i64>(normal_f));
-
- assert_eq!(None, cast::<f64, isize>(small_f));
- assert_eq!(None, cast::<f64, i8>(small_f));
- assert_eq!(None, cast::<f64, i16>(small_f));
- assert_eq!(None, cast::<f64, i32>(small_f));
- assert_eq!(None, cast::<f64, i64>(small_f));
-}
-
-#[test]
-fn cast_to_unsigned_int_checks_overflow() {
- let big_f: f64 = 1.0e123;
- let normal_f: f64 = 1.0;
- let small_f: f64 = -1.0e123;
- assert_eq!(None, cast::<f64, usize>(big_f));
- assert_eq!(None, cast::<f64, u8>(big_f));
- assert_eq!(None, cast::<f64, u16>(big_f));
- assert_eq!(None, cast::<f64, u32>(big_f));
- assert_eq!(None, cast::<f64, u64>(big_f));
-
- assert_eq!(Some(normal_f as usize), cast::<f64, usize>(normal_f));
- assert_eq!(Some(normal_f as u8), cast::<f64, u8>(normal_f));
- assert_eq!(Some(normal_f as u16), cast::<f64, u16>(normal_f));
- assert_eq!(Some(normal_f as u32), cast::<f64, u32>(normal_f));
- assert_eq!(Some(normal_f as u64), cast::<f64, u64>(normal_f));
-
- assert_eq!(None, cast::<f64, usize>(small_f));
- assert_eq!(None, cast::<f64, u8>(small_f));
- assert_eq!(None, cast::<f64, u16>(small_f));
- assert_eq!(None, cast::<f64, u32>(small_f));
- assert_eq!(None, cast::<f64, u64>(small_f));
-}
-
-#[test]
-fn cast_to_i128_checks_overflow() {
- let big_f: f64 = 1.0e123;
- let normal_f: f64 = 1.0;
- let small_f: f64 = -1.0e123;
- assert_eq!(None, cast::<f64, i128>(big_f));
- assert_eq!(None, cast::<f64, u128>(big_f));
-
- assert_eq!(Some(normal_f as i128), cast::<f64, i128>(normal_f));
- assert_eq!(Some(normal_f as u128), cast::<f64, u128>(normal_f));
-
- assert_eq!(None, cast::<f64, i128>(small_f));
- assert_eq!(None, cast::<f64, u128>(small_f));
-}
-
-#[cfg(feature = "std")]
-fn dbg(args: ::core::fmt::Arguments<'_>) {
- println!("{}", args);
-}
-
-#[cfg(not(feature = "std"))]
-fn dbg(_: ::core::fmt::Arguments) {}
-
-// Rust 1.8 doesn't handle cfg on macros correctly
-macro_rules! dbg { ($($tok:tt)*) => { dbg(format_args!($($tok)*)) } }
-
-macro_rules! float_test_edge {
- ($f:ident -> $($t:ident)+) => { $({
- dbg!("testing cast edge cases for {} -> {}", stringify!($f), stringify!($t));
-
- let small = if $t::MIN == 0 || mem::size_of::<$t>() < mem::size_of::<$f>() {
- $t::MIN as $f - 1.0
- } else {
- ($t::MIN as $f).raw_inc().floor()
- };
- let fmin = small.raw_dec();
- dbg!(" testing min {}\n\tvs. {:.0}\n\tand {:.0}", $t::MIN, fmin, small);
- assert_eq!(Some($t::MIN), cast::<$f, $t>($t::MIN as $f));
- assert_eq!(Some($t::MIN), cast::<$f, $t>(fmin));
- assert_eq!(None, cast::<$f, $t>(small));
-
- let (max, large) = if mem::size_of::<$t>() < mem::size_of::<$f>() {
- ($t::MAX, $t::MAX as $f + 1.0)
- } else {
- let large = $t::MAX as $f; // rounds up!
- let max = large.raw_dec() as $t; // the next smallest possible
- assert_eq!(max.count_ones(), $f::MANTISSA_DIGITS);
- (max, large)
- };
- let fmax = large.raw_dec();
- dbg!(" testing max {}\n\tvs. {:.0}\n\tand {:.0}", max, fmax, large);
- assert_eq!(Some(max), cast::<$f, $t>(max as $f));
- assert_eq!(Some(max), cast::<$f, $t>(fmax));
- assert_eq!(None, cast::<$f, $t>(large));
-
- dbg!(" testing non-finite values");
- assert_eq!(None, cast::<$f, $t>($f::NAN));
- assert_eq!(None, cast::<$f, $t>($f::INFINITY));
- assert_eq!(None, cast::<$f, $t>($f::NEG_INFINITY));
- })+}
-}
-
-trait RawOffset: Sized {
- fn raw_inc(self) -> Self;
- fn raw_dec(self) -> Self;
-}
-
-impl RawOffset for f32 {
- fn raw_inc(self) -> Self {
- Self::from_bits(self.to_bits() + 1)
- }
-
- fn raw_dec(self) -> Self {
- Self::from_bits(self.to_bits() - 1)
- }
-}
-
-impl RawOffset for f64 {
- fn raw_inc(self) -> Self {
- Self::from_bits(self.to_bits() + 1)
- }
-
- fn raw_dec(self) -> Self {
- Self::from_bits(self.to_bits() - 1)
- }
-}
-
-#[test]
-fn cast_float_to_int_edge_cases() {
- float_test_edge!(f32 -> isize i8 i16 i32 i64);
- float_test_edge!(f32 -> usize u8 u16 u32 u64);
- float_test_edge!(f64 -> isize i8 i16 i32 i64);
- float_test_edge!(f64 -> usize u8 u16 u32 u64);
-}
-
-#[test]
-fn cast_float_to_i128_edge_cases() {
- float_test_edge!(f32 -> i128 u128);
- float_test_edge!(f64 -> i128 u128);
-}
-
-macro_rules! int_test_edge {
- ($f:ident -> { $($t:ident)+ } with $BigS:ident $BigU:ident ) => { $({
- #[allow(arithmetic_overflow)] // https://github.com/rust-lang/rust/issues/109731
- fn test_edge() {
- dbg!("testing cast edge cases for {} -> {}", stringify!($f), stringify!($t));
-
- match ($f::MIN as $BigS).cmp(&($t::MIN as $BigS)) {
- Greater => {
- assert_eq!(Some($f::MIN as $t), cast::<$f, $t>($f::MIN));
- }
- Equal => {
- assert_eq!(Some($t::MIN), cast::<$f, $t>($f::MIN));
- }
- Less => {
- let min = $t::MIN as $f;
- assert_eq!(Some($t::MIN), cast::<$f, $t>(min));
- assert_eq!(None, cast::<$f, $t>(min - 1));
- }
- }
-
- match ($f::MAX as $BigU).cmp(&($t::MAX as $BigU)) {
- Greater => {
- let max = $t::MAX as $f;
- assert_eq!(Some($t::MAX), cast::<$f, $t>(max));
- assert_eq!(None, cast::<$f, $t>(max + 1));
- }
- Equal => {
- assert_eq!(Some($t::MAX), cast::<$f, $t>($f::MAX));
- }
- Less => {
- assert_eq!(Some($f::MAX as $t), cast::<$f, $t>($f::MAX));
- }
- }
- }
- test_edge();
- })+}
-}
-
-#[test]
-fn cast_int_to_int_edge_cases() {
- use core::cmp::Ordering::*;
-
- macro_rules! test_edge {
- ($( $from:ident )+) => { $({
- int_test_edge!($from -> { isize i8 i16 i32 i64 } with i64 u64);
- int_test_edge!($from -> { usize u8 u16 u32 u64 } with i64 u64);
- })+}
- }
-
- test_edge!(isize i8 i16 i32 i64);
- test_edge!(usize u8 u16 u32 u64);
-}
-
-#[test]
-fn cast_int_to_128_edge_cases() {
- use core::cmp::Ordering::*;
-
- macro_rules! test_edge {
- ($( $t:ident )+) => {
- $(
- int_test_edge!($t -> { i128 u128 } with i128 u128);
- )+
- int_test_edge!(i128 -> { $( $t )+ } with i128 u128);
- int_test_edge!(u128 -> { $( $t )+ } with i128 u128);
- }
- }
-
- test_edge!(isize i8 i16 i32 i64 i128);
- test_edge!(usize u8 u16 u32 u64 u128);
-}
-
-#[test]
-fn newtype_from_primitive() {
- #[derive(PartialEq, Debug)]
- struct New<T>(T);
-
- // minimal impl
- impl<T: FromPrimitive> FromPrimitive for New<T> {
- fn from_i64(n: i64) -> Option<Self> {
- T::from_i64(n).map(New)
- }
-
- fn from_u64(n: u64) -> Option<Self> {
- T::from_u64(n).map(New)
- }
- }
-
- macro_rules! assert_eq_from {
- ($( $from:ident )+) => {$(
- assert_eq!(T::$from(Bounded::min_value()).map(New),
- New::<T>::$from(Bounded::min_value()));
- assert_eq!(T::$from(Bounded::max_value()).map(New),
- New::<T>::$from(Bounded::max_value()));
- )+}
- }
-
- fn check<T: PartialEq + Debug + FromPrimitive>() {
- assert_eq_from!(from_i8 from_i16 from_i32 from_i64 from_isize);
- assert_eq_from!(from_u8 from_u16 from_u32 from_u64 from_usize);
- assert_eq_from!(from_f32 from_f64);
- }
-
- macro_rules! check {
- ($( $ty:ty )+) => {$( check::<$ty>(); )+}
- }
- check!(i8 i16 i32 i64 isize);
- check!(u8 u16 u32 u64 usize);
-}
-
-#[test]
-fn newtype_to_primitive() {
- #[derive(PartialEq, Debug)]
- struct New<T>(T);
-
- // minimal impl
- impl<T: ToPrimitive> ToPrimitive for New<T> {
- fn to_i64(&self) -> Option<i64> {
- self.0.to_i64()
- }
-
- fn to_u64(&self) -> Option<u64> {
- self.0.to_u64()
- }
- }
-
- macro_rules! assert_eq_to {
- ($( $to:ident )+) => {$(
- assert_eq!(T::$to(&Bounded::min_value()),
- New::<T>::$to(&New(Bounded::min_value())));
- assert_eq!(T::$to(&Bounded::max_value()),
- New::<T>::$to(&New(Bounded::max_value())));
- )+}
- }
-
- fn check<T: PartialEq + Debug + Bounded + ToPrimitive>() {
- assert_eq_to!(to_i8 to_i16 to_i32 to_i64 to_isize);
- assert_eq_to!(to_u8 to_u16 to_u32 to_u64 to_usize);
- assert_eq_to!(to_f32 to_f64);
- }
-
- macro_rules! check {
- ($( $ty:ty )+) => {$( check::<$ty>(); )+}
- }
- check!(i8 i16 i32 i64 isize);
- check!(u8 u16 u32 u64 usize);
-}
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