feat: added support to wasm (#94)

* test: run tests also in wasm targets

* fix: install rand with wasm-bindgen por wasm targets

* fix: use actual usize size to access buffer.

* fix: do not run functions that create files in wasm.

* test: do not run in wasm test that panics.

Co-authored-by: Luis Moreno <morenol@users.noreply.github.com>

src/optimization/first_order/gradient_descent.rs

@@ -88,6 +88,7 @@ mod tests {
     use crate::optimization::line_search::Backtracking;
     use crate::optimization::FunctionOrder;
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn gradient_descent() {
         let x0 = DenseMatrix::row_vector_from_array(&[-1., 1.]);

src/optimization/first_order/lbfgs.rs

@@ -239,6 +239,7 @@ mod tests {
     use crate::optimization::line_search::Backtracking;
     use crate::optimization::FunctionOrder;
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn lbfgs() {
         let x0 = DenseMatrix::row_vector_from_array(&[0., 0.]);

src/optimization/line_search.rs

@@ -112,6 +112,7 @@ impl<T: Float> LineSearchMethod<T> for Backtracking<T> {
 mod tests {
     use super::*;
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn backtracking() {
         let f = |x: f64| -> f64 { x.powf(2.) + x };