refactor: make function_runner module and its methods public

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: naor-starkware

CHANGELOG.md

@@ -11,9 +11,6 @@ Both branches support Stwo prover opcodes (Blake2s, QM31) since v2.0.0.
 ---
 
 #### Upcoming Changes
-
-* 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)
 
 * Add Stwo cairo runner API [#2351](https://github.com/lambdaclass/cairo-vm/pull/2351)

vm/src/test_helpers/mod.rs

@@ -1,4 +1,4 @@
-//! Test helpers for Cairo VM — enabled by the `function_runner` feature.
-
+//! Test helpers for Cairo VM — enabled by the `test_utils` feature.
+#[cfg(feature = "test_utils")]
 pub mod error_utils;
 pub mod test_utils;

vm/src/vm/runners/function_runner.rs

@@ -19,7 +19,6 @@ use crate::vm::runners::cairo_runner::{CairoArg, CairoRunner, ORDERED_BUILTIN_LI
 use crate::vm::security::verify_secure_runner;
 
 /// Identifies a Cairo function entrypoint either by function name or by program counter.
-#[allow(dead_code)]
 pub enum EntryPoint<'a> {
     Name(&'a str),
     Pc(usize),
@@ -75,7 +74,7 @@ impl CairoRunner {
     /// Resolves the entrypoint, builds the call stack, runs until the function's end PC,
     /// and optionally verifies security constraints.
     #[allow(clippy::result_large_err)]
-    pub(crate) fn run_from_entrypoint(
+    pub fn run_from_entrypoint(
         &mut self,
         entrypoint: EntryPoint<'_>,
         args: &[CairoArg],
@@ -106,7 +105,7 @@ impl CairoRunner {
 
     /// Resolves `__main__.<entrypoint>` to its PC, following alias chains.
     #[allow(clippy::result_large_err)]
-    pub(crate) fn get_function_pc(&self, entrypoint: &str) -> Result<usize, CairoRunError> {
+    pub fn get_function_pc(&self, entrypoint: &str) -> Result<usize, CairoRunError> {
         let full_name = format!("__main__.{entrypoint}");
         let identifier = self
             .program

vm/src/vm/runners/mod.rs

@@ -2,4 +2,4 @@ pub mod builtin_runner;
 pub mod cairo_pie;
 pub mod cairo_runner;
 #[cfg(feature = "test_utils")]
-pub(crate) mod function_runner;
+pub mod function_runner;