Test sv2 ffi interface

[rrybarczyk]

No description provided.

[Fi3]

There are 2 issues related to the PR that should be added as they are not a priority but still very
relevant:

First issue:

The below should compile:
cargo test --features prop_test --features with_serde

Second issue

When implementing Arbitrary we should also implement shrink.

[rrybarczyk]

When I run $ cargo test --features prop_test, I get the following warning for every decoder.next_frame();:

warning: unused `Result` that must be used
   --> protocols/v2/sv2-ffi/src/lib.rs:644:9
    |
644 |         decoder.next_frame();
    |         ^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(unused_must_use)]` on by default
    = note: this `Result` may be an `Err` variant, which should be handled

Do you have a suggestion on how I can fix these warnings?

[Fi3]

When I run $ cargo test --features prop_test, I get the following warning for every decoder.next_frame();:

warning: unused `Result` that must be used
   --> protocols/v2/sv2-ffi/src/lib.rs:644:9
    |
644 |         decoder.next_frame();
    |         ^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(unused_must_use)]` on by default
    = note: this `Result` may be an `Err` variant, which should be handled

Do you have a suggestion on how I can fix these warnings?

Did you try let _ = decoder.next_frame(); If it do not work just put #[allow(unused_must_use)] no need to handle the result as we know that it is an error and we know that is the correct behavior.

[rrybarczyk]

When I run $ cargo test --features prop_test, I get the following warning for every decoder.next_frame();:

warning: unused `Result` that must be used
   --> protocols/v2/sv2-ffi/src/lib.rs:644:9
    |
644 |         decoder.next_frame();
    |         ^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[warn(unused_must_use)]` on by default
    = note: this `Result` may be an `Err` variant, which should be handled

Do you have a suggestion on how I can fix these warnings?

Did you try let _ = decoder.next_frame(); If it do not work just put #[allow(unused_must_use)] no need to handle the result as we know that it is an error and we know that is the correct behavior.

Yes that fixed it! Ty.