Use fixtures in in cases

[fhennig]

I have an idea for using fixture in the case macro:

struct TestDependency;  // complex object 

#[fixture]
fn dependency_built_in_one_way() -> TestDependency {
    ...  // long setup
}

#[fixture]
fn dependency_built_in_another_way() -> TestDependency {
    ... // long setup
}

#[rstest]
fn testing_specific_feature(dependency_built_in_one_way: TestDependency) {
    ... // testing something only on the first object
}

// A test that should test a feature on both complex configurations of the dependency
#[rstest]
#[case(dependency_built_in_one_way)]
#[case(dependency_built_in_another_way)]
fn my_test(#[case] dependency: TestDependency) {
    ...
}

That would be useful to me. I could do something similar with cases on the fixture, but then I wouldn't be able to only use one of the built variants in certain tests.

[la10736]

If I remember well the original function is not removed... so you can call it like:

#[rstest]
#[case(dependency_built_in_one_way())]
#[case(dependency_built_in_another_way())]
fn my_test(#[case] dependency: TestDependency) {
    ...
}

There is no way to implement because the procedural macro that expand the tests cannot know nothing about the available fixtures or other symbols that can be available with the same name.

[fhennig]

Ah, I forgot to mention that dependency_built_in_one_way has other fixtures it depends on.

There is no way to implement because the procedural macro that expand the tests cannot know nothing about the available fixtures or other symbols that can be available with the same name.

Alright, that is unfortunate.

Thanks for your quick response!