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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:12:43 +0000 |
commit | cf94bdc0742c13e2a0cac864c478b8626b266e1b (patch) | |
tree | 044670aa50cc5e2b4229aa0b6b3df6676730c0a6 /vendor/once_cell/tests/it.rs | |
parent | Adding debian version 1.65.0+dfsg1-2. (diff) | |
download | rustc-cf94bdc0742c13e2a0cac864c478b8626b266e1b.tar.xz rustc-cf94bdc0742c13e2a0cac864c478b8626b266e1b.zip |
Merging upstream version 1.66.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/once_cell/tests/it.rs')
-rw-r--r-- | vendor/once_cell/tests/it.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/vendor/once_cell/tests/it.rs b/vendor/once_cell/tests/it.rs index 476f14bb0..410b93b64 100644 --- a/vendor/once_cell/tests/it.rs +++ b/vendor/once_cell/tests/it.rs @@ -138,6 +138,41 @@ mod unsync { } #[test] + fn lazy_force_mut() { + let called = Cell::new(0); + let mut x = Lazy::new(|| { + called.set(called.get() + 1); + 92 + }); + assert_eq!(called.get(), 0); + let v = Lazy::force_mut(&mut x); + assert_eq!(called.get(), 1); + + *v /= 2; + assert_eq!(*x, 46); + assert_eq!(called.get(), 1); + } + + #[test] + fn lazy_get_mut() { + let called = Cell::new(0); + let mut x: Lazy<u32, _> = Lazy::new(|| { + called.set(called.get() + 1); + 92 + }); + + assert_eq!(called.get(), 0); + assert_eq!(*x, 92); + + let mut_ref: &mut u32 = Lazy::get_mut(&mut x).unwrap(); + assert_eq!(called.get(), 1); + + *mut_ref /= 2; + assert_eq!(*x, 46); + assert_eq!(called.get(), 1); + } + + #[test] fn lazy_default() { static CALLED: AtomicUsize = AtomicUsize::new(0); |