Move most Rc tests to alloctests

1 files changed, 0 insertions, 649 deletions

diff --git a/library/alloc/src/rc/tests.rs b/library/alloc/src/rc/tests.rs
index 2210a7c24c0..35ff6b7d570 100644
--- a/library/alloc/src/rc/tests.rs
+++ b/library/alloc/src/rc/tests.rs
@@ -1,65 +1,6 @@
-use std::cell::RefCell;
-use std::clone::Clone;
-
 use super::*;
 
 #[test]
-fn test_clone() {
-    let x = Rc::new(RefCell::new(5));
-    let y = x.clone();
-    *x.borrow_mut() = 20;
-    assert_eq!(*y.borrow(), 20);
-}
-
-#[test]
-fn test_simple() {
-    let x = Rc::new(5);
-    assert_eq!(*x, 5);
-}
-
-#[test]
-fn test_simple_clone() {
-    let x = Rc::new(5);
-    let y = x.clone();
-    assert_eq!(*x, 5);
-    assert_eq!(*y, 5);
-}
-
-#[test]
-fn test_destructor() {
-    let x: Rc<Box<_>> = Rc::new(Box::new(5));
-    assert_eq!(**x, 5);
-}
-
-#[test]
-fn test_live() {
-    let x = Rc::new(5);
-    let y = Rc::downgrade(&x);
-    assert!(y.upgrade().is_some());
-}
-
-#[test]
-fn test_dead() {
-    let x = Rc::new(5);
-    let y = Rc::downgrade(&x);
-    drop(x);
-    assert!(y.upgrade().is_none());
-}
-
-#[test]
-fn weak_self_cyclic() {
-    struct Cycle {
-        x: RefCell<Option<Weak<Cycle>>>,
-    }
-
-    let a = Rc::new(Cycle { x: RefCell::new(None) });
-    let b = Rc::downgrade(&a.clone());
-    *a.x.borrow_mut() = Some(b);
-
-    // hopefully we don't double-free (or leak)...
-}
-
-#[test]
 fn is_unique() {
     let x = Rc::new(3);
     assert!(Rc::is_unique(&x));
@@ -72,593 +13,3 @@ fn is_unique() {
     drop(w);
     assert!(Rc::is_unique(&x));
 }
-
-#[test]
-fn test_strong_count() {
-    let a = Rc::new(0);
-    assert!(Rc::strong_count(&a) == 1);
-    let w = Rc::downgrade(&a);
-    assert!(Rc::strong_count(&a) == 1);
-    let b = w.upgrade().expect("upgrade of live rc failed");
-    assert!(Rc::strong_count(&b) == 2);
-    assert!(Rc::strong_count(&a) == 2);
-    drop(w);
-    drop(a);
-    assert!(Rc::strong_count(&b) == 1);
-    let c = b.clone();
-    assert!(Rc::strong_count(&b) == 2);
-    assert!(Rc::strong_count(&c) == 2);
-}
-
-#[test]
-fn test_weak_count() {
-    let a = Rc::new(0);
-    assert!(Rc::strong_count(&a) == 1);
-    assert!(Rc::weak_count(&a) == 0);
-    let w = Rc::downgrade(&a);
-    assert!(Rc::strong_count(&a) == 1);
-    assert!(Rc::weak_count(&a) == 1);
-    drop(w);
-    assert!(Rc::strong_count(&a) == 1);
-    assert!(Rc::weak_count(&a) == 0);
-    let c = a.clone();
-    assert!(Rc::strong_count(&a) == 2);
-    assert!(Rc::weak_count(&a) == 0);
-    drop(c);
-}
-
-#[test]
-fn weak_counts() {
-    assert_eq!(Weak::weak_count(&Weak::<u64>::new()), 0);
-    assert_eq!(Weak::strong_count(&Weak::<u64>::new()), 0);
-
-    let a = Rc::new(0);
-    let w = Rc::downgrade(&a);
-    assert_eq!(Weak::strong_count(&w), 1);
-    assert_eq!(Weak::weak_count(&w), 1);
-    let w2 = w.clone();
-    assert_eq!(Weak::strong_count(&w), 1);
-    assert_eq!(Weak::weak_count(&w), 2);
-    assert_eq!(Weak::strong_count(&w2), 1);
-    assert_eq!(Weak::weak_count(&w2), 2);
-    drop(w);
-    assert_eq!(Weak::strong_count(&w2), 1);
-    assert_eq!(Weak::weak_count(&w2), 1);
-    let a2 = a.clone();
-    assert_eq!(Weak::strong_count(&w2), 2);
-    assert_eq!(Weak::weak_count(&w2), 1);
-    drop(a2);
-    drop(a);
-    assert_eq!(Weak::strong_count(&w2), 0);
-    assert_eq!(Weak::weak_count(&w2), 0);
-    drop(w2);
-}
-
-#[test]
-fn try_unwrap() {
-    let x = Rc::new(3);
-    assert_eq!(Rc::try_unwrap(x), Ok(3));
-    let x = Rc::new(4);
-    let _y = x.clone();
-    assert_eq!(Rc::try_unwrap(x), Err(Rc::new(4)));
-    let x = Rc::new(5);
-    let _w = Rc::downgrade(&x);
-    assert_eq!(Rc::try_unwrap(x), Ok(5));
-}
-
-#[test]
-fn into_inner() {
-    let x = Rc::new(3);
-    assert_eq!(Rc::into_inner(x), Some(3));
-
-    let x = Rc::new(4);
-    let y = Rc::clone(&x);
-    assert_eq!(Rc::into_inner(x), None);
-    assert_eq!(Rc::into_inner(y), Some(4));
-
-    let x = Rc::new(5);
-    let _w = Rc::downgrade(&x);
-    assert_eq!(Rc::into_inner(x), Some(5));
-}
-
-#[test]
-fn into_from_raw() {
-    let x = Rc::new(Box::new("hello"));
-    let y = x.clone();
-
-    let x_ptr = Rc::into_raw(x);
-    drop(y);
-    unsafe {
-        assert_eq!(**x_ptr, "hello");
-
-        let x = Rc::from_raw(x_ptr);
-        assert_eq!(**x, "hello");
-
-        assert_eq!(Rc::try_unwrap(x).map(|x| *x), Ok("hello"));
-    }
-}
-
-#[test]
-fn test_into_from_raw_unsized() {
-    use std::fmt::Display;
-    use std::string::ToString;
-
-    let rc: Rc<str> = Rc::from("foo");
-
-    let ptr = Rc::into_raw(rc.clone());
-    let rc2 = unsafe { Rc::from_raw(ptr) };
-
-    assert_eq!(unsafe { &*ptr }, "foo");
-    assert_eq!(rc, rc2);
-
-    let rc: Rc<dyn Display> = Rc::new(123);
-
-    let ptr = Rc::into_raw(rc.clone());
-    let rc2 = unsafe { Rc::from_raw(ptr) };
-
-    assert_eq!(unsafe { &*ptr }.to_string(), "123");
-    assert_eq!(rc2.to_string(), "123");
-}
-
-#[test]
-fn into_from_weak_raw() {
-    let x = Rc::new(Box::new("hello"));
-    let y = Rc::downgrade(&x);
-
-    let y_ptr = Weak::into_raw(y);
-    unsafe {
-        assert_eq!(**y_ptr, "hello");
-
-        let y = Weak::from_raw(y_ptr);
-        let y_up = Weak::upgrade(&y).unwrap();
-        assert_eq!(**y_up, "hello");
-        drop(y_up);
-
-        assert_eq!(Rc::try_unwrap(x).map(|x| *x), Ok("hello"));
-    }
-}
-
-#[test]
-fn test_into_from_weak_raw_unsized() {
-    use std::fmt::Display;
-    use std::string::ToString;
-
-    let arc: Rc<str> = Rc::from("foo");
-    let weak: Weak<str> = Rc::downgrade(&arc);
-
-    let ptr = Weak::into_raw(weak.clone());
-    let weak2 = unsafe { Weak::from_raw(ptr) };
-
-    assert_eq!(unsafe { &*ptr }, "foo");
-    assert!(weak.ptr_eq(&weak2));
-
-    let arc: Rc<dyn Display> = Rc::new(123);
-    let weak: Weak<dyn Display> = Rc::downgrade(&arc);
-
-    let ptr = Weak::into_raw(weak.clone());
-    let weak2 = unsafe { Weak::from_raw(ptr) };
-
-    assert_eq!(unsafe { &*ptr }.to_string(), "123");
-    assert!(weak.ptr_eq(&weak2));
-}
-
-#[test]
-fn get_mut() {
-    let mut x = Rc::new(3);
-    *Rc::get_mut(&mut x).unwrap() = 4;
-    assert_eq!(*x, 4);
-    let y = x.clone();
-    assert!(Rc::get_mut(&mut x).is_none());
-    drop(y);
-    assert!(Rc::get_mut(&mut x).is_some());
-    let _w = Rc::downgrade(&x);
-    assert!(Rc::get_mut(&mut x).is_none());
-}
-
-#[test]
-fn test_cowrc_clone_make_unique() {
-    let mut cow0 = Rc::new(75);
-    let mut cow1 = cow0.clone();
-    let mut cow2 = cow1.clone();
-
-    assert!(75 == *Rc::make_mut(&mut cow0));
-    assert!(75 == *Rc::make_mut(&mut cow1));
-    assert!(75 == *Rc::make_mut(&mut cow2));
-
-    *Rc::make_mut(&mut cow0) += 1;
-    *Rc::make_mut(&mut cow1) += 2;
-    *Rc::make_mut(&mut cow2) += 3;
-
-    assert!(76 == *cow0);
-    assert!(77 == *cow1);
-    assert!(78 == *cow2);
-
-    // none should point to the same backing memory
-    assert!(*cow0 != *cow1);
-    assert!(*cow0 != *cow2);
-    assert!(*cow1 != *cow2);
-}
-
-#[test]
-fn test_cowrc_clone_unique2() {
-    let mut cow0 = Rc::new(75);
-    let cow1 = cow0.clone();
-    let cow2 = cow1.clone();
-
-    assert!(75 == *cow0);
-    assert!(75 == *cow1);
-    assert!(75 == *cow2);
-
-    *Rc::make_mut(&mut cow0) += 1;
-
-    assert!(76 == *cow0);
-    assert!(75 == *cow1);
-    assert!(75 == *cow2);
-
-    // cow1 and cow2 should share the same contents
-    // cow0 should have a unique reference
-    assert!(*cow0 != *cow1);
-    assert!(*cow0 != *cow2);
-    assert!(*cow1 == *cow2);
-}
-
-#[test]
-fn test_cowrc_clone_weak() {
-    let mut cow0 = Rc::new(75);
-    let cow1_weak = Rc::downgrade(&cow0);
-
-    assert!(75 == *cow0);
-    assert!(75 == *cow1_weak.upgrade().unwrap());
-
-    *Rc::make_mut(&mut cow0) += 1;
-
-    assert!(76 == *cow0);
-    assert!(cow1_weak.upgrade().is_none());
-}
-
-/// This is similar to the doc-test for `Rc::make_mut()`, but on an unsized type (slice).
-#[test]
-fn test_cowrc_unsized() {
-    use std::rc::Rc;
-
-    let mut data: Rc<[i32]> = Rc::new([10, 20, 30]);
-
-    Rc::make_mut(&mut data)[0] += 1; // Won't clone anything
-    let mut other_data = Rc::clone(&data); // Won't clone inner data
-    Rc::make_mut(&mut data)[1] += 1; // Clones inner data
-    Rc::make_mut(&mut data)[2] += 1; // Won't clone anything
-    Rc::make_mut(&mut other_data)[0] *= 10; // Won't clone anything
-
-    // Now `data` and `other_data` point to different allocations.
-    assert_eq!(*data, [11, 21, 31]);
-    assert_eq!(*other_data, [110, 20, 30]);
-}
-
-#[test]
-fn test_show() {
-    let foo = Rc::new(75);
-    assert_eq!(format!("{foo:?}"), "75");
-}
-
-#[test]
-fn test_unsized() {
-    let foo: Rc<[i32]> = Rc::new([1, 2, 3]);
-    assert_eq!(foo, foo.clone());
-}
-
-#[test]
-fn test_maybe_thin_unsized() {
-    // If/when custom thin DSTs exist, this test should be updated to use one
-    use std::ffi::CStr;
-
-    let x: Rc<CStr> = Rc::from(c"swordfish");
-    assert_eq!(format!("{x:?}"), "\"swordfish\"");
-    let y: Weak<CStr> = Rc::downgrade(&x);
-    drop(x);
-
-    // At this point, the weak points to a dropped DST
-    assert!(y.upgrade().is_none());
-    // But we still need to be able to get the alloc layout to drop.
-    // CStr has no drop glue, but custom DSTs might, and need to work.
-    drop(y);
-}
-
-#[test]
-fn test_from_owned() {
-    let foo = 123;
-    let foo_rc = Rc::from(foo);
-    assert!(123 == *foo_rc);
-}
-
-#[test]
-fn test_new_weak() {
-    let foo: Weak<usize> = Weak::new();
-    assert!(foo.upgrade().is_none());
-}
-
-#[test]
-fn test_ptr_eq() {
-    let five = Rc::new(5);
-    let same_five = five.clone();
-    let other_five = Rc::new(5);
-
-    assert!(Rc::ptr_eq(&five, &same_five));
-    assert!(!Rc::ptr_eq(&five, &other_five));
-}
-
-#[test]
-fn test_from_str() {
-    let r: Rc<str> = Rc::from("foo");
-
-    assert_eq!(&r[..], "foo");
-}
-
-#[test]
-fn test_copy_from_slice() {
-    let s: &[u32] = &[1, 2, 3];
-    let r: Rc<[u32]> = Rc::from(s);
-
-    assert_eq!(&r[..], [1, 2, 3]);
-}
-
-#[test]
-fn test_clone_from_slice() {
-    #[derive(Clone, Debug, Eq, PartialEq)]
-    struct X(u32);
-
-    let s: &[X] = &[X(1), X(2), X(3)];
-    let r: Rc<[X]> = Rc::from(s);
-
-    assert_eq!(&r[..], s);
-}
-
-#[test]
-#[should_panic]
-fn test_clone_from_slice_panic() {
-    use std::string::{String, ToString};
-
-    struct Fail(u32, String);
-
-    impl Clone for Fail {
-        fn clone(&self) -> Fail {
-            if self.0 == 2 {
-                panic!();
-            }
-            Fail(self.0, self.1.clone())
-        }
-    }
-
-    let s: &[Fail] =
-        &[Fail(0, "foo".to_string()), Fail(1, "bar".to_string()), Fail(2, "baz".to_string())];
-
-    // Should panic, but not cause memory corruption
-    let _r: Rc<[Fail]> = Rc::from(s);
-}
-
-#[test]
-fn test_from_box() {
-    let b: Box<u32> = Box::new(123);
-    let r: Rc<u32> = Rc::from(b);
-
-    assert_eq!(*r, 123);
-}
-
-#[test]
-fn test_from_box_str() {
-    use std::string::String;
-
-    let s = String::from("foo").into_boxed_str();
-    assert_eq!((&&&s).as_str(), "foo");
-
-    let r: Rc<str> = Rc::from(s);
-    assert_eq!((&r).as_str(), "foo");
-    assert_eq!(r.as_str(), "foo");
-
-    assert_eq!(&r[..], "foo");
-}
-
-#[test]
-fn test_from_box_slice() {
-    let s = vec![1, 2, 3].into_boxed_slice();
-    let r: Rc<[u32]> = Rc::from(s);
-
-    assert_eq!(&r[..], [1, 2, 3]);
-}
-
-#[test]
-fn test_from_box_trait() {
-    use std::fmt::Display;
-    use std::string::ToString;
-
-    let b: Box<dyn Display> = Box::new(123);
-    let r: Rc<dyn Display> = Rc::from(b);
-
-    assert_eq!(r.to_string(), "123");
-}
-
-#[test]
-fn test_from_box_trait_zero_sized() {
-    use std::fmt::Debug;
-
-    let b: Box<dyn Debug> = Box::new(());
-    let r: Rc<dyn Debug> = Rc::from(b);
-
-    assert_eq!(format!("{r:?}"), "()");
-}
-
-#[test]
-fn test_from_vec() {
-    let v = vec![1, 2, 3];
-    let r: Rc<[u32]> = Rc::from(v);
-
-    assert_eq!(&r[..], [1, 2, 3]);
-}
-
-#[test]
-fn test_downcast() {
-    use std::any::Any;
-
-    let r1: Rc<dyn Any> = Rc::new(i32::MAX);
-    let r2: Rc<dyn Any> = Rc::new("abc");
-
-    assert!(r1.clone().downcast::<u32>().is_err());
-
-    let r1i32 = r1.downcast::<i32>();
-    assert!(r1i32.is_ok());
-    assert_eq!(r1i32.unwrap(), Rc::new(i32::MAX));
-
-    assert!(r2.clone().downcast::<i32>().is_err());
-
-    let r2str = r2.downcast::<&'static str>();
-    assert!(r2str.is_ok());
-    assert_eq!(r2str.unwrap(), Rc::new("abc"));
-}
-
-#[test]
-fn test_array_from_slice() {
-    let v = vec![1, 2, 3];
-    let r: Rc<[u32]> = Rc::from(v);
-
-    let a: Result<Rc<[u32; 3]>, _> = r.clone().try_into();
-    assert!(a.is_ok());
-
-    let a: Result<Rc<[u32; 2]>, _> = r.clone().try_into();
-    assert!(a.is_err());
-}
-
-#[test]
-fn test_rc_cyclic_with_zero_refs() {
-    struct ZeroRefs {
-        inner: Weak<ZeroRefs>,
-    }
-
-    let zero_refs = Rc::new_cyclic(|inner| {
-        assert_eq!(inner.strong_count(), 0);
-        assert!(inner.upgrade().is_none());
-        ZeroRefs { inner: Weak::new() }
-    });
-
-    assert_eq!(Rc::strong_count(&zero_refs), 1);
-    assert_eq!(Rc::weak_count(&zero_refs), 0);
-    assert_eq!(zero_refs.inner.strong_count(), 0);
-    assert_eq!(zero_refs.inner.weak_count(), 0);
-}
-
-#[test]
-fn test_rc_cyclic_with_one_ref() {
-    struct OneRef {
-        inner: Weak<OneRef>,
-    }
-
-    let one_ref = Rc::new_cyclic(|inner| {
-        assert_eq!(inner.strong_count(), 0);
-        assert!(inner.upgrade().is_none());
-        OneRef { inner: inner.clone() }
-    });
-
-    assert_eq!(Rc::strong_count(&one_ref), 1);
-    assert_eq!(Rc::weak_count(&one_ref), 1);
-
-    let one_ref2 = Weak::upgrade(&one_ref.inner).unwrap();
-    assert!(Rc::ptr_eq(&one_ref, &one_ref2));
-
-    assert_eq!(one_ref.inner.strong_count(), 2);
-    assert_eq!(one_ref.inner.weak_count(), 1);
-}
-
-#[test]
-fn test_rc_cyclic_with_two_ref() {
-    struct TwoRefs {
-        inner: Weak<TwoRefs>,
-        inner1: Weak<TwoRefs>,
-    }
-
-    let two_refs = Rc::new_cyclic(|inner| {
-        assert_eq!(inner.strong_count(), 0);
-        assert!(inner.upgrade().is_none());
-        TwoRefs { inner: inner.clone(), inner1: inner.clone() }
-    });
-
-    assert_eq!(Rc::strong_count(&two_refs), 1);
-    assert_eq!(Rc::weak_count(&two_refs), 2);
-
-    let two_ref3 = Weak::upgrade(&two_refs.inner).unwrap();
-    assert!(Rc::ptr_eq(&two_refs, &two_ref3));
-
-    let two_ref2 = Weak::upgrade(&two_refs.inner1).unwrap();
-    assert!(Rc::ptr_eq(&two_refs, &two_ref2));
-
-    assert_eq!(Rc::strong_count(&two_refs), 3);
-    assert_eq!(Rc::weak_count(&two_refs), 2);
-}
-
-#[test]
-fn test_unique_rc_weak() {
-    let rc = UniqueRc::new(42);
-    let weak = UniqueRc::downgrade(&rc);
-    assert!(weak.upgrade().is_none());
-
-    let _rc = UniqueRc::into_rc(rc);
-    assert_eq!(*weak.upgrade().unwrap(), 42);
-}
-
-#[test]
-fn test_unique_rc_drop_weak() {
-    let rc = UniqueRc::new(42);
-    let weak = UniqueRc::downgrade(&rc);
-    mem::drop(weak);
-
-    let rc = UniqueRc::into_rc(rc);
-    assert_eq!(*rc, 42);
-}
-
-#[test]
-fn test_unique_rc_drops_contents() {
-    let mut dropped = false;
-    struct DropMe<'a>(&'a mut bool);
-    impl Drop for DropMe<'_> {
-        fn drop(&mut self) {
-            *self.0 = true;
-        }
-    }
-    {
-        let rc = UniqueRc::new(DropMe(&mut dropped));
-        drop(rc);
-    }
-    assert!(dropped);
-}
-
-/// Exercise the non-default allocator usage.
-#[test]
-fn test_unique_rc_with_alloc_drops_contents() {
-    let mut dropped = false;
-    struct DropMe<'a>(&'a mut bool);
-    impl Drop for DropMe<'_> {
-        fn drop(&mut self) {
-            *self.0 = true;
-        }
-    }
-    {
-        let rc = UniqueRc::new_in(DropMe(&mut dropped), std::alloc::System);
-        drop(rc);
-    }
-    assert!(dropped);
-}
-
-#[test]
-fn test_unique_rc_weak_clone_holding_ref() {
-    let mut v = UniqueRc::new(0u8);
-    let w = UniqueRc::downgrade(&v);
-    let r = &mut *v;
-    let _ = w.clone(); // touch weak count
-    *r = 123;
-}
-
-#[test]
-fn test_unique_rc_unsizing_coercion() {
-    let mut rc: UniqueRc<[u8]> = UniqueRc::new([0u8; 3]);
-    assert_eq!(rc.len(), 3);
-    rc[0] = 123;
-    let rc: Rc<[u8]> = UniqueRc::into_rc(rc);
-    assert_eq!(*rc, [123, 0, 0]);
-}