1ed646eaf7
Libcore's test infrastructure is complicated by the fact that many lang items are defined in the crate. The current approach (realcore/realstd imports) is hacky and hard to work with (tests inside of core::cmp haven't been run for months!). Moving tests to a separate crate does mean that they can only test the public API of libcore, but I don't feel that that is too much of an issue. The only tests that I had to get rid of were some checking the various numeric formatters, but those are also exercised through normal format! calls in other tests.
129 lines
2.9 KiB
Rust
129 lines
2.9 KiB
Rust
// Copyright 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::cell::*;
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use std::mem::drop;
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#[test]
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fn smoketest_cell() {
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let x = Cell::new(10i);
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assert!(x == Cell::new(10));
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assert!(x.get() == 10);
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x.set(20);
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assert!(x == Cell::new(20));
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assert!(x.get() == 20);
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let y = Cell::new((30i, 40i));
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assert!(y == Cell::new((30, 40)));
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assert!(y.get() == (30, 40));
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}
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#[test]
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fn cell_has_sensible_show() {
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let x = Cell::new("foo bar");
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assert!(format!("{}", x).as_slice().contains(x.get()));
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x.set("baz qux");
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assert!(format!("{}", x).as_slice().contains(x.get()));
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}
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#[test]
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fn ref_and_refmut_have_sensible_show() {
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let refcell = RefCell::new("foo");
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let refcell_refmut = refcell.borrow_mut();
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assert!(format!("{}", refcell_refmut).as_slice().contains("foo"));
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drop(refcell_refmut);
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let refcell_ref = refcell.borrow();
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assert!(format!("{}", refcell_ref).as_slice().contains("foo"));
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drop(refcell_ref);
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}
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#[test]
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fn double_imm_borrow() {
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let x = RefCell::new(0i);
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let _b1 = x.borrow();
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x.borrow();
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}
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#[test]
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fn no_mut_then_imm_borrow() {
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let x = RefCell::new(0i);
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let _b1 = x.borrow_mut();
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assert!(x.try_borrow().is_none());
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}
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#[test]
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fn no_imm_then_borrow_mut() {
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let x = RefCell::new(0i);
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let _b1 = x.borrow();
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assert!(x.try_borrow_mut().is_none());
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}
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#[test]
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fn no_double_borrow_mut() {
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let x = RefCell::new(0i);
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let _b1 = x.borrow_mut();
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assert!(x.try_borrow_mut().is_none());
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}
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#[test]
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fn imm_release_borrow_mut() {
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let x = RefCell::new(0i);
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{
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let _b1 = x.borrow();
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}
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x.borrow_mut();
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}
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#[test]
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fn mut_release_borrow_mut() {
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let x = RefCell::new(0i);
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{
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let _b1 = x.borrow_mut();
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}
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x.borrow();
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}
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#[test]
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fn double_borrow_single_release_no_borrow_mut() {
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let x = RefCell::new(0i);
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let _b1 = x.borrow();
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{
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let _b2 = x.borrow();
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}
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assert!(x.try_borrow_mut().is_none());
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}
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#[test]
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#[should_fail]
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fn discard_doesnt_unborrow() {
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let x = RefCell::new(0i);
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let _b = x.borrow();
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let _ = _b;
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let _b = x.borrow_mut();
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}
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#[test]
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#[allow(experimental)]
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fn clone_ref_updates_flag() {
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let x = RefCell::new(0i);
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{
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let b1 = x.borrow();
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assert!(x.try_borrow_mut().is_none());
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{
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let _b2 = clone_ref(&b1);
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assert!(x.try_borrow_mut().is_none());
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}
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assert!(x.try_borrow_mut().is_none());
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}
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assert!(x.try_borrow_mut().is_some());
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}
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