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Add tests.

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This commit is contained in:
Luqman Aden 2014-12-05 14:41:28 -05:00
parent 5fb1e6b1e2
commit 6d91419f27
1 changed files with 13 additions and 1 deletions
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14
src/test/run-pass/enum-null-pointer-opt.rs
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@ -34,9 +34,21 @@ fn main() {
// Pointers - Box<T> // Pointers - Box<T>
assert_eq!(size_of::<Box<int>>(), size_of::<Option<Box<int>>>()); assert_eq!(size_of::<Box<int>>(), size_of::<Option<Box<int>>>());
// The optimization can't apply to raw pointers // The optimization can't apply to raw pointers
assert!(size_of::<Option<*const int>>() != size_of::<*const int>()); assert!(size_of::<Option<*const int>>() != size_of::<*const int>());
assert!(Some(0 as *const int).is_some()); // Can't collapse None to null assert!(Some(0 as *const int).is_some()); // Can't collapse None to null
struct Foo {
_a: Box<int>
}
struct Bar(Box<int>);
// Should apply through structs
assert_eq!(size_of::<Foo>(), size_of::<Option<Foo>>());
assert_eq!(size_of::<Bar>(), size_of::<Option<Bar>>());
// and tuples
assert_eq!(size_of::<(u8, Box<int>)>(), size_of::<Option<(u8, Box<int>)>>());
// and fixed-size arrays
assert_eq!(size_of::<[Box<int>, ..1]>(), size_of::<Option<[Box<int>, ..1]>>());
} }