Merge pull request #1574 from CosmWasm/test-sizeof

Test size_of for Uint64/128/256/512

Author: webmaster128

packages/std/src/math/uint128.rs

@@ -540,6 +540,11 @@ mod tests {
     use super::*;
     use crate::{from_slice, to_vec};
 
+    #[test]
+    fn size_of_works() {
+        assert_eq!(std::mem::size_of::<Uint128>(), 16);
+    }
+
     #[test]
     fn uint128_zero_works() {
         let zero = Uint128::zero();

packages/std/src/math/uint256.rs

@@ -668,6 +668,11 @@ mod tests {
     use super::*;
     use crate::{from_slice, to_vec};
 
+    #[test]
+    fn size_of_works() {
+        assert_eq!(std::mem::size_of::<Uint256>(), 32);
+    }
+
     #[test]
     fn uint256_new_works() {
         let num = Uint256::new([1; 32]);

packages/std/src/math/uint512.rs

@@ -623,6 +623,11 @@ mod tests {
     use super::*;
     use crate::{from_slice, to_vec};
 
+    #[test]
+    fn size_of_works() {
+        assert_eq!(std::mem::size_of::<Uint512>(), 64);
+    }
+
     #[test]
     fn uint512_new_works() {
         let num = Uint512::new([1; 64]);

packages/std/src/math/uint64.rs

@@ -494,6 +494,11 @@ mod tests {
     use super::*;
     use crate::{from_slice, to_vec};
 
+    #[test]
+    fn size_of_works() {
+        assert_eq!(std::mem::size_of::<Uint64>(), 8);
+    }
+
     #[test]
     fn uint64_zero_works() {
         let zero = Uint64::zero();