feat!: hide testing module behind a feature flag

Cargo.toml

@@ -11,6 +11,9 @@ keywords = ["nonlinear-equations", "optimization", "math", "science"]
 categories = ["science", "mathematics"]
 edition = "2021"
 
+[features]
+testing = []
+
 [dependencies]
 nalgebra = "0.31"
 rand = { version = "0.8", features = ["small_rng"] }

gomez-bench/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 
 [dependencies]
 divan = "0.1.2"
-gomez = { path = ".." }
+gomez = { path = "..", features = ["testing"] }
 gsl-wrapper = { path = "../gsl-wrapper" }
 
 [[bench]]

src/lib.rs

@@ -253,8 +253,13 @@ pub mod analysis;
 pub mod core;
 pub mod derivatives;
 pub mod solver;
+
+#[cfg(feature = "testing")]
 pub mod testing;
 
+#[cfg(not(feature = "testing"))]
+pub(crate) mod testing;
+
 pub use nalgebra;
 
 /// Gomez prelude.

src/testing.rs

@@ -18,6 +18,8 @@
 //! \[4\] [HOMPACK: A Suite of Codes for Globally Convergent Homotopy
 //! Algorithms](https://dl.acm.org/doi/10.1145/29380.214343)
 
+#![allow(unused)]
+
 use std::error::Error as StdError;
 
 use nalgebra::{