diff options
Diffstat (limited to 'library/alloc/src/testing/crash_test.rs')
| -rw-r--r-- | library/alloc/src/testing/crash_test.rs | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/library/alloc/src/testing/crash_test.rs b/library/alloc/src/testing/crash_test.rs deleted file mode 100644 index 8e00e4f41e5..00000000000 --- a/library/alloc/src/testing/crash_test.rs +++ /dev/null @@ -1,120 +0,0 @@ -use std::cmp::Ordering; -use std::sync::atomic::AtomicUsize; -use std::sync::atomic::Ordering::SeqCst; - -use crate::fmt::Debug; // the `Debug` trait is the only thing we use from `crate::fmt` - -/// A blueprint for crash test dummy instances that monitor particular events. -/// Some instances may be configured to panic at some point. -/// Events are `clone`, `drop` or some anonymous `query`. -/// -/// Crash test dummies are identified and ordered by an id, so they can be used -/// as keys in a BTreeMap. -#[derive(Debug)] -pub(crate) struct CrashTestDummy { - pub id: usize, - cloned: AtomicUsize, - dropped: AtomicUsize, - queried: AtomicUsize, -} - -impl CrashTestDummy { - /// Creates a crash test dummy design. The `id` determines order and equality of instances. - pub(crate) fn new(id: usize) -> CrashTestDummy { - CrashTestDummy { - id, - cloned: AtomicUsize::new(0), - dropped: AtomicUsize::new(0), - queried: AtomicUsize::new(0), - } - } - - /// Creates an instance of a crash test dummy that records what events it experiences - /// and optionally panics. - pub(crate) fn spawn(&self, panic: Panic) -> Instance<'_> { - Instance { origin: self, panic } - } - - /// Returns how many times instances of the dummy have been cloned. - pub(crate) fn cloned(&self) -> usize { - self.cloned.load(SeqCst) - } - - /// Returns how many times instances of the dummy have been dropped. - pub(crate) fn dropped(&self) -> usize { - self.dropped.load(SeqCst) - } - - /// Returns how many times instances of the dummy have had their `query` member invoked. - pub(crate) fn queried(&self) -> usize { - self.queried.load(SeqCst) - } -} - -#[derive(Debug)] -pub(crate) struct Instance<'a> { - origin: &'a CrashTestDummy, - panic: Panic, -} - -#[derive(Copy, Clone, Debug, PartialEq, Eq)] -pub(crate) enum Panic { - Never, - InClone, - InDrop, - InQuery, -} - -impl Instance<'_> { - pub(crate) fn id(&self) -> usize { - self.origin.id - } - - /// Some anonymous query, the result of which is already given. - pub(crate) fn query<R>(&self, result: R) -> R { - self.origin.queried.fetch_add(1, SeqCst); - if self.panic == Panic::InQuery { - panic!("panic in `query`"); - } - result - } -} - -impl Clone for Instance<'_> { - fn clone(&self) -> Self { - self.origin.cloned.fetch_add(1, SeqCst); - if self.panic == Panic::InClone { - panic!("panic in `clone`"); - } - Self { origin: self.origin, panic: Panic::Never } - } -} - -impl Drop for Instance<'_> { - fn drop(&mut self) { - self.origin.dropped.fetch_add(1, SeqCst); - if self.panic == Panic::InDrop { - panic!("panic in `drop`"); - } - } -} - -impl PartialOrd for Instance<'_> { - fn partial_cmp(&self, other: &Self) -> Option<Ordering> { - self.id().partial_cmp(&other.id()) - } -} - -impl Ord for Instance<'_> { - fn cmp(&self, other: &Self) -> Ordering { - self.id().cmp(&other.id()) - } -} - -impl PartialEq for Instance<'_> { - fn eq(&self, other: &Self) -> bool { - self.id().eq(&other.id()) - } -} - -impl Eq for Instance<'_> {} |
