@OmriEshhar1 reviewed 7 files and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on naor-starkware).

@YairVaknin-starkware reviewed 8 files and all commit messages, and made 5 comments.
Reviewable status: all files reviewed, 5 unresolved discussions.

CHANGELOG.md line 17 at r2 (raw file):

* refactor: add `CairoFunctionRunner` type alias for `CairoRunner` under the `test_utils` feature flag [#2377](https://github.com/starkware-libs/cairo-vm/pull/2377)
* refactor: add `function_runner` feature flag and `CairoFunctionRunner` type alias for `CairoRunner` [#2377](https://github.com/starkware-libs/cairo-vm/pull/2377)
* feat: add `test_helpers` module (`error_utils`, `test_utils`) with `assert_mr_eq!`, `load_cairo_program!` macros and `expect_*` error checkers, behind `test_utils` feature flag [#2378](https://github.com/starkware-libs/cairo-vm/pull/2378)

fix

Code quote:

* refactor: add `function_runner` feature flag and `CairoFunctionRunner` type alias for `CairoRunner` [#2377](https://github.com/starkware-libs/cairo-vm/pull/2377)
* feat: add `test_helpers` module (`error_utils`, `test_utils`) with `assert_mr_eq!`, `load_cairo_program!` macros and `expect_*` error checkers, behind `test_utils` feature flag [#2378](https://github.com/starkware-libs/cairo-vm/pull/2378)

vm/src/test_helpers/error_utils.rs line 44 at r2 (raw file):

/// Type alias for check functions that validate test results.
pub type VmCheck<T> = fn(&std::result::Result<T, CairoRunError>);

can just be Result, right? pls looks for similar instances where you can shorten.

Code quote:

std::result::Result

vm/src/test_helpers/error_utils.rs line 62 at r2 (raw file):

}

/// Asserts that the result is `HintError::AssertNotEqualFail`.

This funcs have very repetitive boiler plate. Pls extract to a single func which these func will invoke that will get the res and the predicate u check.

Code quote:

/// Asserts that the result is `HintError::AssertNotEqualFail`.

vm/src/test_helpers/error_utils.rs line 220 at r2 (raw file):

    }

    /// `expect_hint_assert_not_zero` does not panic on `HintError::AssertNotZero`.

these error tests could be parameterized using rtest to reduce alot of repetitive boilerplate.

Code quote:

/// `expect_hint_assert_not_zero` does not panic on `HintError::AssertNotZero`.

vm/src/test_helpers/test_utils.rs line 48 at r2 (raw file):

            Ok(v) => v,
            Err(e) => panic!("conversion to MaybeRelocatable failed: {e:?}"),
        };

pls factor out the conversion logic of both cases into a single func which also enforces coercion into MaybeRelocatable (currently it will work for any right that is able to be try_into'd left's type).

Code quote:

        let right_mr = match ($right).try_into() {
            Ok(v) => v,
            Err(e) => panic!("conversion to MaybeRelocatable failed: {e:?}"),
        };