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libcoretest: Add tests for NonZero.
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luqmana committed Dec 29, 2014
1 parent 94f1261 commit 0e039ad
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Showing 3 changed files with 101 additions and 38 deletions.
38 changes: 0 additions & 38 deletions src/libcore/nonzero.rs
Expand Up @@ -51,41 +51,3 @@ impl<T: Zeroable> Deref<T> for NonZero<T> {
inner
}
}

#[cfg(test)]
mod test {
use super::NonZero;

#[test]
fn test_create_nonzero_instance() {
let _a = unsafe {
NonZero::new(21)
};
}

#[test]
fn test_size_nonzero_in_option() {
use mem::size_of;
use option::Option;

assert_eq!(size_of::<NonZero<u32>>(), size_of::<Option<NonZero<u32>>>());
}

#[test]
fn test_match_on_nonzero_option() {
use option::Some;

let a = Some(unsafe {
NonZero::new(42)
});
match a {
Some(val) => assert_eq!(*val, 42),
None => panic!("unexpected None while matching on Some(NonZero(_))")
}

match unsafe { NonZero::new(43) } {
Some(val) => assert_eq!(*val, 43),
None => panic!("unexpected None while matching on Some(NonZero(_))")
}
}
}
1 change: 1 addition & 0 deletions src/libcoretest/lib.rs
Expand Up @@ -25,6 +25,7 @@ mod fmt;
mod hash;
mod iter;
mod mem;
mod nonzero;
mod num;
mod ops;
mod option;
Expand Down
100 changes: 100 additions & 0 deletions src/libcoretest/nonzero.rs
@@ -0,0 +1,100 @@
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use core::nonzero::NonZero;
use core::option::Option;
use core::option::Option::{Some, None};
use std::mem::size_of;

#[test]
fn test_create_nonzero_instance() {
let _a = unsafe {
NonZero::new(21i)
};
}

#[test]
fn test_size_nonzero_in_option() {
assert_eq!(size_of::<NonZero<u32>>(), size_of::<Option<NonZero<u32>>>());
}

#[test]
fn test_match_on_nonzero_option() {
let a = Some(unsafe {
NonZero::new(42i)
});
match a {
Some(val) => assert_eq!(*val, 42),
None => panic!("unexpected None while matching on Some(NonZero(_))")
}

match unsafe { Some(NonZero::new(43i)) } {
Some(val) => assert_eq!(*val, 43),
None => panic!("unexpected None while matching on Some(NonZero(_))")
}
}

#[test]
fn test_match_option_empty_vec() {
let a: Option<Vec<int>> = Some(vec![]);
match a {
None => panic!("unexpected None while matching on Some(vec![])"),
_ => {}
}
}

#[test]
fn test_match_option_vec() {
let a = Some(vec![1i, 2, 3, 4]);
match a {
Some(v) => assert_eq!(v, vec![1i, 2, 3, 4]),
None => panic!("unexpected None while matching on Some(vec![1, 2, 3, 4])")
}
}

#[test]
fn test_match_option_rc() {
use std::rc::Rc;

let five = Rc::new(5i);
match Some(five) {
Some(r) => assert_eq!(*r, 5i),
None => panic!("unexpected None while matching on Some(Rc::new(5))")
}
}

#[test]
fn test_match_option_arc() {
use std::sync::Arc;

let five = Arc::new(5i);
match Some(five) {
Some(a) => assert_eq!(*a, 5i),
None => panic!("unexpected None while matching on Some(Arc::new(5))")
}
}

#[test]
fn test_match_option_empty_string() {
let a = Some(String::new());
match a {
None => panic!("unexpected None while matching on Some(String::new())"),
_ => {}
}
}

#[test]
fn test_match_option_string() {
let five = "Five".into_string();
match Some(five) {
Some(s) => assert_eq!(s, "Five"),
None => panic!("unexpected None while matching on Some(String { ... })")
}
}

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