rust/tests/ui/generics/generic-object.rs

// run-pass

trait Foo<T> {
    fn get(&self) -> T;
}

struct S {
    x: isize
}

impl Foo<isize> for S {
    fn get(&self) -> isize {
        self.x
    }
}

pub fn main() {
    let x = Box::new(S { x: 1 });
    let y = x as Box<dyn Foo<isize>>;
    assert_eq!(y.get(), 1);
}
Add `// run-pass` annotations to all the tests under `ui/run-pass/`. (I may have accidentally added it to some auxilliary crates as well; my emacs-macro-based methodology was pretty crude.) 2018-08-30 12:18:55 +00:00			`// run-pass`
librustc: Remove `~EXPR`, `~TYPE`, and `~PAT` from the language, except for `~str`/`~[]`. Note that `~self` still remains, since I forgot to add support for `Box<self>` before the snapshot. How to update your code: * Instead of `~EXPR`, you should write `box EXPR`. * Instead of `~TYPE`, you should write `Box<Type>`. * Instead of `~PATTERN`, you should write `box PATTERN`. [breaking-change] 2014-05-06 01:56:44 +00:00
test: Add a test for generic objects. r=test-only 2012-11-29 19:18:36 +00:00			`trait Foo<T> {`
librustc: Remove implicit self from the language, except for old-style drop blocks. 2013-03-13 02:32:14 +00:00			`fn get(&self) -> T;`
test: Add a test for generic objects. r=test-only 2012-11-29 19:18:36 +00:00			`}`

			`struct S {`
Mass rename uint/int to usize/isize Now that support has been removed, all lingering use cases are renamed. 2015-03-26 00:06:52 +00:00			`x: isize`
test: Add a test for generic objects. r=test-only 2012-11-29 19:18:36 +00:00			`}`

Mass rename uint/int to usize/isize Now that support has been removed, all lingering use cases are renamed. 2015-03-26 00:06:52 +00:00			`impl Foo<isize> for S {`
			`fn get(&self) -> isize {`
test: Add a test for generic objects. r=test-only 2012-11-29 19:18:36 +00:00			`self.x`
			`}`
			`}`

check-fast fallout from removing export, r=burningtree 2013-02-02 03:43:17 +00:00			`pub fn main() {`
Remove box syntax from most places in src/test outside of the issues dir 2021-08-25 00:39:40 +00:00			`let x = Box::new(S { x: 1 });`
Update run-pass test suite to use dyn 2019-05-28 18:47:21 +00:00			`let y = x as Box<dyn Foo<isize>>;`
Use assert_eq! rather than assert! where possible 2013-05-19 02:02:45 +00:00			`assert_eq!(y.get(), 1);`
test: Add a test for generic objects. r=test-only 2012-11-29 19:18:36 +00:00			`}`