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/preprocessing/categorical.rs

@@ -225,6 +225,7 @@ mod tests {
     use crate::linalg::naive::dense_matrix::DenseMatrix;
     use crate::preprocessing::series_encoder::CategoryMapper;
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn adjust_idxs() {
         assert_eq!(find_new_idxs(0, &[], &[]), Vec::<usize>::new());
@@ -269,6 +270,7 @@ mod tests {
         (orig, oh_enc)
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn hash_encode_f64_series() {
         let series = vec![3.0, 1.0, 2.0, 1.0];
@@ -279,6 +281,7 @@ mod tests {
         let orig_val: f64 = inv.unwrap().into();
         assert_eq!(orig_val, 2.0);
     }
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn test_fit() {
         let (x, _) = build_fake_matrix();
@@ -294,6 +297,7 @@ mod tests {
         assert_eq!(num_cat, vec![2, 4]);
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn matrix_transform_test() {
         let (x, expected_x) = build_fake_matrix();
@@ -309,6 +313,7 @@ mod tests {
         assert_eq!(nm, expected_x);
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn fail_on_bad_category() {
         let m = DenseMatrix::from_2d_array(&[

src/preprocessing/series_encoder.rs

@@ -201,6 +201,7 @@ where
 mod tests {
     use super::*;
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn from_categories() {
         let fake_categories: Vec<usize> = vec![1, 2, 3, 4, 5, 3, 5, 3, 1, 2, 4];
@@ -219,12 +220,14 @@ mod tests {
         let enc = CategoryMapper::<&str>::from_positional_category_vec(fake_category_pos);
         enc
     }
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn ordinal_encoding() {
         let enc = build_fake_str_enc();
         assert_eq!(1f64, enc.get_ordinal::<f64>(&"dog").unwrap())
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn category_map_and_vec() {
         let category_map: HashMap<&str, usize> = vec![("background", 0), ("dog", 1), ("cat", 2)]
@@ -239,6 +242,7 @@ mod tests {
         assert_eq!(oh_vec, res);
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn positional_categories_vec() {
         let enc = build_fake_str_enc();
@@ -250,6 +254,7 @@ mod tests {
         assert_eq!(oh_vec, res);
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn invert_label_test() {
         let enc = build_fake_str_enc();
@@ -262,6 +267,7 @@ mod tests {
         };
     }
 
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     #[test]
     fn test_many_categorys() {
         let enc = build_fake_str_enc();