once fixtures don't get Dropped

[vpzomtrrfrt]

Example:

use rstest::*;

struct SomeStruct {}
impl std::ops::Drop for SomeStruct {
    fn drop(&mut self) {
        std::fs::File::create("got_dropped").unwrap();
    }
}

#[fixture]
#[once]
fn value() -> SomeStruct {
    std::fs::File::create("got_created").unwrap();
    SomeStruct {}
}

#[rstest]
fn test1(value: &SomeStruct) {
    assert!(true);
}

Running this test creates the "got_created" file but not the "got_dropped" file, indicating that the Drop implementation for SomeStruct was not run

[la10736]

I'm sorry, but this is a well know limitation of this implementation (#119 (comment)). You can find a note about this at https://docs.rs/rstest/latest/rstest/attr.fixture.html#once-fixture .
I think that there is no way to implement it without write a custom test runner that will make this crate harder to use.

[vpzomtrrfrt]

ah I missed that note, fair enough

[vpzomtrrfrt]

Might be worth adding to the readme though