101 lines
2.5 KiB
Rust
101 lines
2.5 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use core::nonzero::NonZero;
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use core::option::Option;
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use core::option::Option::{Some, None};
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use std::mem::size_of;
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#[test]
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fn test_create_nonzero_instance() {
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let _a = unsafe {
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NonZero::new(21)
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};
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}
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#[test]
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fn test_size_nonzero_in_option() {
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assert_eq!(size_of::<NonZero<u32>>(), size_of::<Option<NonZero<u32>>>());
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}
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#[test]
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fn test_match_on_nonzero_option() {
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let a = Some(unsafe {
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NonZero::new(42)
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});
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match a {
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Some(val) => assert_eq!(*val, 42),
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None => panic!("unexpected None while matching on Some(NonZero(_))")
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}
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match unsafe { Some(NonZero::new(43)) } {
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Some(val) => assert_eq!(*val, 43),
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None => panic!("unexpected None while matching on Some(NonZero(_))")
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}
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}
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#[test]
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fn test_match_option_empty_vec() {
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let a: Option<Vec<isize>> = Some(vec![]);
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match a {
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None => panic!("unexpected None while matching on Some(vec![])"),
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_ => {}
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}
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}
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#[test]
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fn test_match_option_vec() {
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let a = Some(vec![1, 2, 3, 4]);
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match a {
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Some(v) => assert_eq!(v, [1, 2, 3, 4]),
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None => panic!("unexpected None while matching on Some(vec![1, 2, 3, 4])")
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}
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}
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#[test]
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fn test_match_option_rc() {
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use std::rc::Rc;
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let five = Rc::new(5);
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match Some(five) {
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Some(r) => assert_eq!(*r, 5),
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None => panic!("unexpected None while matching on Some(Rc::new(5))")
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}
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}
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#[test]
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fn test_match_option_arc() {
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use std::sync::Arc;
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let five = Arc::new(5);
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match Some(five) {
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Some(a) => assert_eq!(*a, 5),
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None => panic!("unexpected None while matching on Some(Arc::new(5))")
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}
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}
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#[test]
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fn test_match_option_empty_string() {
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let a = Some(String::new());
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match a {
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None => panic!("unexpected None while matching on Some(String::new())"),
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_ => {}
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}
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}
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#[test]
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fn test_match_option_string() {
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let five = "Five".to_string();
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match Some(five) {
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Some(s) => assert_eq!(s, "Five"),
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None => panic!("unexpected None while matching on Some(String { ... })")
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}
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}
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