Migrate the test

Author: afdw

tests/all/main.rs

@@ -18,7 +18,6 @@ mod math;
 mod node;
 mod non_debug;
 mod non_wasm;
-mod optional_numbers;
 mod simple;
 mod slice;
 mod structural;

tests/all/optional_numbers.rs

@@ -6,3 +6,4 @@ extern crate wasm_bindgen;
 
 pub mod api;
 pub mod option;
+pub mod optional_numbers;