Fix an issue where features were not working

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gmm"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 rust-version = "1.76"
 authors = ["HK416 <powerspirit127@gmail.com>"]

src/features/impl_bytemuck.rs

@@ -54,3 +54,46 @@ unsafe impl Pod for UInteger4 {}
 unsafe impl Zeroable for UInteger4 {}
 
 // TODO: Add test function...
+#[cfg(test)]
+mod tests {
+    use core::mem;
+    use crate::{
+        Boolean2, Boolean3, Boolean4, 
+        Float2, Float3, Float3x3, Float4, Float4x4, 
+        Integer2, Integer3, Integer4, UInteger2, UInteger3, UInteger4
+    };
+
+    macro_rules! test_pod_impl {
+        ($name:ident, $t:ty) => {
+            #[test]
+            fn $name() {
+                let t = <$t>::default();
+                let bytes = bytemuck::bytes_of(&t);
+                for byte in bytes {
+                    assert_eq!(byte, byte);
+                }
+
+                assert_eq!(&t as *const _ as usize, bytes.as_ptr() as usize);
+                assert_eq!(bytes.len(), mem::size_of_val(&t));
+            }
+        }
+    }
+
+    test_pod_impl!(impl_bytemuck_boolean2, Boolean2);
+    test_pod_impl!(impl_bytemuck_boolean3, Boolean3);
+    test_pod_impl!(impl_bytemuck_boolean4, Boolean4);
+
+    test_pod_impl!(impl_bytemuck_float2, Float2);
+    test_pod_impl!(impl_bytemuck_float3, Float3);
+    test_pod_impl!(impl_bytemuck_float4, Float4);
+    test_pod_impl!(impl_bytemuck_float3x3, Float3x3);
+    test_pod_impl!(impl_bytemuck_float4x4, Float4x4);
+
+    test_pod_impl!(impl_bytemuck_integer2, Integer2);
+    test_pod_impl!(impl_bytemuck_integer3, Integer3);
+    test_pod_impl!(impl_bytemuck_integer4, Integer4);
+
+    test_pod_impl!(impl_bytemuck_uinteger2, UInteger2);
+    test_pod_impl!(impl_bytemuck_uinteger3, UInteger3);
+    test_pod_impl!(impl_bytemuck_uinteger4, UInteger4);
+}

src/features/mod.rs

@@ -1,5 +1,5 @@
-#[cfg(features = "bytemuck")]
+#[cfg(feature = "bytemuck")]
 pub mod impl_bytemuck;
 
-#[cfg(features = "mint")]
+#[cfg(feature = "mint")]
 pub mod impl_mint;